Condenser Fan Malfunction in HVAC System – 2014-2022 Braun Chief XL, Express, Express Plus, Liberty, Patriot, Signature, Super Chief, & TLC

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-911 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Braun Ambulances Submission Date : DEC 09, 2022 NHTSA Recall No. : 22V-911 Manufacturer Recall No. : 2022-02 Manufacturer Information : Manufacturer Name : Braun Ambulances Address : 1170 Production Drive Van Wert OH 45891 Company phone : 4192327020 Population : Number of potentially involved : 1,321 Estimated percentage with defect : 50 % Vehicle Information : Vehicle 1 : 2014-2022 Braun Ambulance Chief XL Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : GAS Descriptive Information : Field failrue reported. Went back to when the current AC units started being used in production. This impacts all Braun units with externial AC condensers mounted on the front of the module. 92 total Chief XL Gas powertrain vehicles potentially impacted Production Dates : JAN 01, 2014 – AUG 01, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2014-2022 Braun Ambulance Chief XL Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : DIESEL Descriptive Information : Field failrue reported. Went back to when the current AC units started being used in production. This impacts all Braun units with externial AC condensers mounted on the front of the module. 457 total Chief XL Diesel powertrain vehicles potentially impacted Production Dates : JAN 01, 2014 – AUG 31, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 22V-911 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 3 : 2014-2022 Braun Ambulance Express Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : DIESEL Descriptive Information : Field failrue reported. Went back to when the current AC units started being used in production. This impacts all Braun units with externial AC condensers mounted on the front of the module. 30 total Express diesel powertrain vehicles potentially impacted Production Dates : JAN 01, 2014 – AUG 31, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 4 : 2014-2022 Braun Ambulance Express Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : GAS Descriptive Information : Field failrue reported. Went back to when the current AC units started being used in production. This impacts all Braun units with externial AC condensers mounted on the front of the module. 52 total Express Gas powertrain vehicles potentially impacted Production Dates : JAN 01, 2014 – AUG 31, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 5 : 2014-2022 Braun Ambulance Express Plus Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : DIESEL Descriptive Information : Field failrue reported. Went back to when the current AC units started being used in production. This impacts all Braun units with externial AC condensers mounted on the front of the module. 99 total Express Plus diesel powertrain vehicles potentially impacted Production Dates : JAN 01, 2014 – AUG 31, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 6 : 2014-2022 Braun Ambulance Express Plus Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : GAS Descriptive Information : Field failrue reported. Went back to when the current AC units started being used in production. This impacts all Braun units with externial AC condensers mounted on the front of the module. 97 total Express Plus Gas powertrain vehicles potentially impacted Production Dates : JAN 01, 2014 – AUG 31, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 22V-911 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 7 : 2014-2022 Braun Ambulance Liberty Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : DIESEL Descriptive Information : Field failrue reported. Went back to when the current AC units started being used in production. This impacts all Braun units with externial AC condensers mounted on the front of the module. 224 total Liberty diesel powertrain vehicles potentially impacted Production Dates : JAN 02, 2014 – AUG 31, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 8 : 2014-2022 Braun Ambulance Liberty Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : GAS Descriptive Information : Field failrue reported. Went back to when the current AC units started being used in production. This impacts all Braun units with externial AC condensers mounted on the front of the module. 3 total Liberty Gas powertrain vehicles potentially impacted Production Dates : JAN 01, 2014 – AUG 31, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 9 : 2014-2022 Braun Ambulance Patriot Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : DIESEL Descriptive Information : Field failrue reported. Went back to when the current AC units started being used in production. This impacts all Braun units with externial AC condensers mounted on the front of the module. 1 total Patriot diesel powertrain vehicles potentially impacted Production Dates : JAN 01, 2014 – AUG 31, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 10 : 2014-2022 Braun Ambulance Signature Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : DIESEL Descriptive Information : Field failrue reported. Went back to when the current AC units started being used in production. This impacts all Braun units with externial AC condensers mounted on the front of the module. 3 total Signature diesel powertrain vehicles potentially impacted Production Dates : JAN 01, 2014 – AUG 31, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 22V-911 Page 4 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 11 : 2014-2022 Braun Ambulance Signature Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : GAS Descriptive Information : Field failrue reported. Went back to when the current AC units started being used in production. This impacts all Braun units with externial AC condensers mounted on the front of the module. 3 total signature Gas powertrain vehicles potentially impacted Production Dates : JAN 01, 2014 – AUG 31, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 12 : 2014-2022 Braun Ambulance Super Chief Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : DIESEL Descriptive Information : Field failrue reported. Went back to when the current AC units started being used in production. This impacts all Braun units with externial AC condensers mounted on the front of the module. 257 total Super Chief diesel powertrain vehicles potentially impacted Production Dates : JAN 01, 2014 – AUG 31, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 13 : 2014-2022 Braun Ambulance TLC Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : DIESEL Descriptive Information : Field failrue reported. Went back to when the current AC units started being used in production. This impacts all Braun units with externial AC condensers mounted on the front of the module. 3 total TLC diesel powertrain vehicles potentially impacted Production Dates : JAN 01, 2014 – AUG 31, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : Voltage created from a spinning condenser fan may feed DC voltage back into the system. This may damage the relay controlling the condenser fan. Relay damage such as welding the contacts open or burning of the contacts can result in operational failure of the HVAC system FMVSS 1 : NR FMVSS 2 : NR Part 573 Safety Recall Report 22V-911 Page 5 The information contained in this report was submitted pursuant to 49 CFR §573 Description of the Safety Risk : Relay damage such as welding the contacts open or burning of the contacts can result in operational failure of the HVAC system Description of the Cause : In the affected vehicles, the unenergized condenser fans can spin due to air movement as the vehicle is in motion. The fan spinning will generate voltage that feeds back into the relay causing it to overheat. This overheating can result in an inoperable condenser fan and the HVAC system will not function Identification of Any Warning that can Occur : Front mount condensor will no longer work and the 110/12V AC system will not function. Involved Components : Component Name 1 : Front mount 110/12V AC condenser Component Description : External AC system condenser Component Part Number : Front mount condenser Supplier Identification : Component Manufacturer Name : NR Address : NR NR Country : NR Chronology : Initial field failure report in June 2022. Reviewed failure mode and corrected issue on specific unit. Investigated problem further once unit back in service. Reviewed prints/designs. Found missing diode/fan spinning under certain conditions to be problematic. Additional failures reported August – Novemeber. Moved to file recall in December 2022. Part 573 Safety Recall Report 22V-911 Page 6 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : Braun will remedy the affected units free of charge by replacing the relay and adding a diode. It is requested that customers contact their authorized Braun Dealer to arrange replacement of the affected relay and diode addition. The estimated labor to perform this recall is 15 minutes. Labor reimbursement for the inspection and repair for each ambulance will be 30 minutes. How Remedy Component Differs from Recalled Component : The remedy will include replacing the relay and adding a diode. The remedied work can be identified by the presence of the diode. Identify How/When Recall Condition was Corrected in Production : The prints/designs were updated. Diode added into process/production in August 2022 after initial failure review. Recall Schedule : Description of Recall Schedule : Recall to be filed on 12/9/22. Upon approval of recall and documents, letters will be printed and mailed to dealers and customers starting week of 12/19/22. Planned Dealer Notification Date : DEC 19, 2022 – DEC 30, 2022 Planned Owner Notification Date : JAN 02, 2023 – JAN 20, 2023 * NR – Not Reported

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NHTSA Recall 22V-911 Chronology: Initial field failure report in June 2022. Reviewed failure mode and corrected issue on specific unit. 2 additional failures reported between July and August 2022. Investigated problem further once unit back in service. Reviewed prints/designs. Found missing diode/fan spinning under certain conditions to be problematic. Reviewed potential exposure due to missing diodes and traced potential back to 2014. Additional failures reported August – November. Moved to file recall in December 2022.

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Braun Industries, Inc. 1170 Production Drive Van Wert OH 45891 Website: www.braunambulances.com | Phone: 419-232-7020 | Fax: 419-232-7070 IMPORTANT SAFETY RECALL This notice applies to your vehicle(s) VIN Recall # 22V-911 Braun Recall Notice: 2022-02 December XX, 2022 This notice is sent to you in accordance with the National Traffic and Motor Vehicle Safety Act. Braun Industries has decided that a safety related defect may exist with certain 2014-2022 Chief XL, Express Plus, Liberty, Super Chief, TLC, and Signature Series ambulances. Voltage created from a spinning condenser fan may feed DC voltage back into the system. This may damage the relay controlling the condenser fan. Relay damage such as welding the contacts open or burning of the contacts can result in operational failure of the HVAC system and potential risk of fire. In the affected vehicles, the unenergized condenser fans can spin due to air movement as the vehicle is in motion. The fan spinning will generate voltage that feeds back into the relay causing it to overheat. This overheating can result in an inoperable condenser fan and the HVAC system will not function. Some condensers may not present an issue at initial review yet should have the relay replaced and diode added. You are receiving this notice because Braun records indicate you may have received shipments of affected units. Braun will remedy the affected units free of charge by replacing the relay and adding a diode. Please contact your authorized Braun Dealer to arrange replacement of the affected relay and diode addition. The time required to remedy this recall is 15 minutes. It is a violation of Federal law for a dealer to deliver a new motor vehicle or any new or used item of motor vehicle equipment (including a tire) covered by the notification under a sale or lease until the defect or noncompliance is remedied. If your local Braun Dealer is unable to arrange service as described above without charge within a 60 day period upon contacting the Braun Dealer, you may submit a complaint to the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue, S.E., Washington, DC 20590 or call toll-free Auto Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153); or go to http://www.safercar.gov. Any lessor who receives a notification of a determination of a safety-related defect or noncompliance pertaining to any leased motor vehicle shall send a copy of such notice to the lessee of a leased motor vehicle, by first- class mail to the most recent lessee known to the lessor. Such notification shall be mailed within ten days of the lessor’s receipt of the notification from the vehicle manufacturer. This requirement applies to both initial and follow-up notifications but does not apply where the manufacturer has notified a lessor’s lessees directly. We apologize in advance for the inconvenience this issue may cause your organization. We will make every effort to make this as simple as possible for you. Sincerely, Kim Braun President – U.S. Division

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Braun Industries, Inc. 1170 Production Drive Van Wert OH 45891 Website: www.braunambulances.com | Phone: 419-232-7020 | Fax: 419-232-7070 December XX, 2022 Dealer Name Affected Vehicles: See Vehicle List Provided The following letter communicates an upcoming NHTSA recall campaign that was initiated by Braun Industries in response to field failures of front mount air conditioner condensers. The reported failures arose from the condenser fans free spinning from air movement while the vehicle was in motion. This fan spinning generates voltage that can damage the relay controlling the fan resulting in the need to replace the relay and add a diode to prevent future issues. This letter will be sent in the coming weeks to owners of the affected vehicles with instructions on how to remedy the situation. The estimated labor to perform this recall is 15 minutes. Labor reimbursement for the inspection and repair for each ambulance will be 30 minutes. IMPORTANT SAFETY RECALL Recall # TBD Braun Recall Notice: 2022-02 December XX, 2022 This notice is sent to you in accordance with the National Traffic and Motor Vehicle Safety Act. Braun Industries has decided that a safety related defect may exist with certain 2014-2022 Chief XL, Express Plus, Liberty, Super Chief, TLC, and Signature Series ambulances. Voltage created from a spinning condenser fan may feed DC voltage back into the system. This may damage the relay controlling the condenser fan. Relay damage such as welding the contacts open or burning of the contacts can result in operational failure of the HVAC system. In the affected vehicles, the unenergized condenser fans can spin due to air movement as the vehicle is in motion. The fan spinning will generate voltage that feeds back into the relay causing it to overheat. This overheating can result in an inoperable condenser fan and the HVAC system will not function. Some condensers may not present an issue at initial review yet should have the relay replaced and diode added. You are receiving this notice because Braun records indicate you may have received shipments of affected units. Braun will remedy the affected units free of charge by replacing the relay and adding a diode. Please contact your authorized Braun Dealer to arrange replacement of the affected relay and diode addition. It is a violation of Federal law for a dealer to deliver a new motor vehicle or any new or used item of motor vehicle equipment (including a tire) covered by the notification under a sale or lease until the defect or noncompliance is remedied. If your local Braun Dealer is unable to arrange service as described above without charge within a 60 day period upon contacting the Braun Dealer, you may submit a complaint to the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue, S.E., Washington, DC 20590 or call toll-free Auto Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153); or go to http://www.safercar.gov. Any lessor who receives a notification of a determination of a safety-related defect or noncompliance pertaining to any leased motor vehicle shall send a copy of such notice to the lessee of a leased motor vehicle, by first- Braun Industries, Inc. 1170 Production Drive Van Wert OH 45891 Website: www.braunambulances.com | Phone: 419-232-7020 | Fax: 419-232-7070 class mail to the most recent lessee known to the lessor. Such notification shall be mailed within ten days of the lessor’s receipt of the notification from the vehicle manufacturer. This requirement applies to both initial and follow-up notifications but does not apply where the manufacturer has notified a lessor’s lessees directly. We apologize in advance for the inconvenience this issue may cause your organization. We will make every effort to make this as simple as possible for you. Sincerely, Kim Braun President – U.S. Division

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Braun Industries, Inc. 1170 Production Drive Van Wert OH 45891 Website: www.braunambulances.com | Phone: 419-232-7020 | Fax: 419-232-7070 December XX, 2022 Dealer Name Affected Vehicles: See Vehicle List Provided The following letter communicates an upcoming NHTSA recall campaign that was initiated by Braun Industries in response to field failures of front mount air conditioner condensers. The reported failures arose from the condenser fans free spinning from air movement while the vehicle was in motion. This fan spinning generates voltage that can damage the relay controlling the fan resulting in the need to replace the relay and add a diode to prevent future issues. This letter will be sent in the coming weeks to owners of the affected vehicles with instructions on how to remedy the situation. The estimated labor to perform this recall is 15 minutes. Labor reimbursement for the inspection and repair for each ambulance will be 30 minutes. IMPORTANT SAFETY RECALL Recall # 22V-911 Braun Recall Notice: 2022-02 December XX, 2022 This notice is sent to you in accordance with the National Traffic and Motor Vehicle Safety Act. Braun Industries has decided that a safety related defect may exist with certain 2014-2022 Chief XL, Express Plus, Liberty, Super Chief, TLC, and Signature Series ambulances. Voltage created from a spinning condenser fan may feed DC voltage back into the system. This may damage the relay controlling the condenser fan. Relay damage such as welding the contacts open or burning of the contacts can result in operational failure of the HVAC system and potential risk of fire. In the affected vehicles, the unenergized condenser fans can spin due to air movement as the vehicle is in motion. The fan spinning will generate voltage that feeds back into the relay causing it to overheat. This overheating can result in an inoperable condenser fan and the HVAC system will not function. Some condensers may not present an issue at initial review yet should have the relay replaced and diode added. You are receiving this notice because Braun records indicate you may have received shipments of affected units. Braun will remedy the affected units free of charge by replacing the relay and adding a diode. Please contact your authorized Braun Dealer to arrange replacement of the affected relay and diode addition. The time required to remedy this recall is 15 minutes. It is a violation of Federal law for a dealer to deliver a new motor vehicle or any new or used item of motor vehicle equipment (including a tire) covered by the notification under a sale or lease until the defect or noncompliance is remedied. If your local Braun Dealer is unable to arrange service as described above without charge within a 60 day period upon contacting the Braun Dealer, you may submit a complaint to the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue, S.E., Washington, DC 20590 or call toll-free Auto Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153); or go to http://www.safercar.gov. Any lessor who receives a notification of a determination of a safety-related defect or noncompliance pertaining to any leased motor vehicle shall send a copy of such notice to the lessee of a leased motor vehicle, by first- Braun Industries, Inc. 1170 Production Drive Van Wert OH 45891 Website: www.braunambulances.com | Phone: 419-232-7020 | Fax: 419-232-7070 class mail to the most recent lessee known to the lessor. Such notification shall be mailed within ten days of the lessor’s receipt of the notification from the vehicle manufacturer. This requirement applies to both initial and follow-up notifications but does not apply where the manufacturer has notified a lessor’s lessees directly. We apologize in advance for the inconvenience this issue may cause your organization. We will make every effort to make this as simple as possible for you. Sincerely, Kim Braun President – U.S. Division

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-911 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Braun Ambulances Submission Date : MAR 29, 2023 NHTSA Recall No. : 22V-911 Manufacturer Recall No. : 2022-02 Manufacturer Information : Manufacturer Name : Braun Ambulances Address : 1170 Production Drive Van Wert OH 45891 Company phone : 4192327020 Population : Number of potentially involved : 1,321 Estimated percentage with defect : 50 % Vehicle Information : Vehicle 1 : 2014-2022 Braun Ambulance Chief XL Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : GAS Descriptive Information : Field failrue reported. Went back to when the current AC units started being used in production. This impacts all Braun units with externial AC condensers mounted on the front of the module. 92 total Chief XL Gas powertrain vehicles potentially impacted Production Dates : JAN 01, 2014 – AUG 01, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2014-2022 Braun Ambulance Chief XL Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : DIESEL Descriptive Information : Field failrue reported. Went back to when the current AC units started being used in production. This impacts all Braun units with externial AC condensers mounted on the front of the module. 457 total Chief XL Diesel powertrain vehicles potentially impacted Production Dates : JAN 01, 2014 – AUG 31, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 22V-911 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 3 : 2014-2022 Braun Ambulance Express Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : DIESEL Descriptive Information : Field failrue reported. Went back to when the current AC units started being used in production. This impacts all Braun units with externial AC condensers mounted on the front of the module. 30 total Express diesel powertrain vehicles potentially impacted Production Dates : JAN 01, 2014 – AUG 31, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 4 : 2014-2022 Braun Ambulance Express Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : GAS Descriptive Information : Field failrue reported. Went back to when the current AC units started being used in production. This impacts all Braun units with externial AC condensers mounted on the front of the module. 52 total Express Gas powertrain vehicles potentially impacted Production Dates : JAN 01, 2014 – AUG 31, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 5 : 2014-2022 Braun Ambulance Express Plus Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : DIESEL Descriptive Information : Field failrue reported. Went back to when the current AC units started being used in production. This impacts all Braun units with externial AC condensers mounted on the front of the module. 99 total Express Plus diesel powertrain vehicles potentially impacted Production Dates : JAN 01, 2014 – AUG 31, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 6 : 2014-2022 Braun Ambulance Express Plus Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : GAS Descriptive Information : Field failrue reported. Went back to when the current AC units started being used in production. This impacts all Braun units with externial AC condensers mounted on the front of the module. 97 total Express Plus Gas powertrain vehicles potentially impacted Production Dates : JAN 01, 2014 – AUG 31, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 22V-911 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 7 : 2014-2022 Braun Ambulance Liberty Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : DIESEL Descriptive Information : Field failrue reported. Went back to when the current AC units started being used in production. This impacts all Braun units with externial AC condensers mounted on the front of the module. 224 total Liberty diesel powertrain vehicles potentially impacted Production Dates : JAN 02, 2014 – AUG 31, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 8 : 2014-2022 Braun Ambulance Liberty Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : GAS Descriptive Information : Field failrue reported. Went back to when the current AC units started being used in production. This impacts all Braun units with externial AC condensers mounted on the front of the module. 3 total Liberty Gas powertrain vehicles potentially impacted Production Dates : JAN 01, 2014 – AUG 31, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 9 : 2014-2022 Braun Ambulance Patriot Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : DIESEL Descriptive Information : Field failrue reported. Went back to when the current AC units started being used in production. This impacts all Braun units with externial AC condensers mounted on the front of the module. 1 total Patriot diesel powertrain vehicles potentially impacted Production Dates : JAN 01, 2014 – AUG 31, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 10 : 2014-2022 Braun Ambulance Signature Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : DIESEL Descriptive Information : Field failrue reported. Went back to when the current AC units started being used in production. This impacts all Braun units with externial AC condensers mounted on the front of the module. 3 total Signature diesel powertrain vehicles potentially impacted Production Dates : JAN 01, 2014 – AUG 31, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 22V-911 Page 4 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 11 : 2014-2022 Braun Ambulance Signature Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : GAS Descriptive Information : Field failrue reported. Went back to when the current AC units started being used in production. This impacts all Braun units with externial AC condensers mounted on the front of the module. 3 total signature Gas powertrain vehicles potentially impacted Production Dates : JAN 01, 2014 – AUG 31, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 12 : 2014-2022 Braun Ambulance Super Chief Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : DIESEL Descriptive Information : Field failrue reported. Went back to when the current AC units started being used in production. This impacts all Braun units with externial AC condensers mounted on the front of the module. 257 total Super Chief diesel powertrain vehicles potentially impacted Production Dates : JAN 01, 2014 – AUG 31, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 13 : 2014-2022 Braun Ambulance TLC Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : ALL Power Train : DIESEL Descriptive Information : Field failrue reported. Went back to when the current AC units started being used in production. This impacts all Braun units with externial AC condensers mounted on the front of the module. 3 total TLC diesel powertrain vehicles potentially impacted Production Dates : JAN 01, 2014 – AUG 31, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : Voltage created from a spinning condenser fan may feed DC voltage back into the system. This may damage the relay controlling the condenser fan. Relay damage such as welding the contacts open or burning of the contacts can result in operational failure of the HVAC system FMVSS 1 : NR FMVSS 2 : NR Part 573 Safety Recall Report 22V-911 Page 5 The information contained in this report was submitted pursuant to 49 CFR §573 Description of the Safety Risk : Relay damage such as welding the contacts open or burning of the contacts can result in operational failure of the HVAC system Description of the Cause : In the affected vehicles, the unenergized condenser fans can spin due to air movement as the vehicle is in motion. The fan spinning will generate voltage that feeds back into the relay causing it to overheat. This overheating can result in an inoperable condenser fan and the HVAC system will not function Identification of Any Warning that can Occur : Front mount condensor will no longer work and the 110/12V AC system will not function. Involved Components : Component Name 1 : Front mount 110/12V AC condenser Component Description : External AC system condenser Component Part Number : Front mount condenser Supplier Identification : Component Manufacturer Name : Braun Ambulances Address : 1170 Production Dr Van Wert Ohio 45891 Country : United States Chronology : Initial field failure report in June 2022. Reviewed failure mode and corrected issue on specific unit. 2 additional failures reported between July and August 2022. Investigated problem further once unit back in service. Reviewed prints/designs. Found missing diode/fan spinning under certain conditions to be problematic. Reviewed potential exposure due to missing diodes and traced potential back to 2014. Additional failures reported August – November. Moved to file recall in December 2022. Part 573 Safety Recall Report 22V-911 Page 6 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : Braun will remedy the affected units free of charge by replacing the relay and adding a diode. It is requested that customers contact their authorized Braun Dealer to arrange replacement of the affected relay and diode addition. The estimated labor to perform this recall is 15 minutes. Labor reimbursement for the inspection and repair for each ambulance will be 30 minutes. How Remedy Component Differs from Recalled Component : The remedy will include replacing the relay and adding a diode. The remedied work can be identified by the presence of the diode. Identify How/When Recall Condition was Corrected in Production : The prints/designs were updated. Diode added into process/production in August 2022 after initial failure review. Recall Schedule : Description of Recall Schedule : Recall to be filed on 12/9/22. Upon approval of recall and documents, letters will be printed and mailed to dealers and customers starting week of 12/19/22. Planned Dealer Notification Date : DEC 19, 2022 – DEC 30, 2022 Planned Owner Notification Date : JAN 02, 2023 – JAN 20, 2023 * NR – Not Reported

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