Inoperative Engine Stop Button – 2017-2018 Prevost X3-45 Motorcoaches

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-918 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Prevost Car (US) Inc. Submission Date : DEC 12, 2022 NHTSA Recall No. : 22V-918 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : Prevost Car (US) Inc. Address : 201 South Avenue South Plains NJ 07080 Company phone : 908-222-7211 Population : Number of potentially involved : 22 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2017-2018 Prevost X3-45 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : The population was determined by identifying all vehicles currently operating with the defective software versions. The concerned vehicles are certain MY2017 to MY2018 Prevost X3-45 buses manufactured during the indicated production dates. The recalled products are limited to these specific vehicles since they are the only ones operating with the defective software versions. A total of 16 MY2017 Prevost X3-45 and 6 MY2018 Prevost X3-45 vehicles are affected by the recall. Production Dates : APR 21, 2016 – JUL 07, 2017 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : On certain vehicles, the engine stop button located in the engine compartment may not stop the engine when it is running. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : The engine stop button may not stop the engine, thus increasing the risk of injury to mechanics when performing repair work in the engine compartment. Prevost has not received any reports of death or injury associated with this defect. Therefore, we consider this as a proactive measure to protect the public from the potential risk associated with this Part 573 Safety Recall Report 22V-918 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 defect. Description of the Cause : The issue results from a Prevost software development error (the software did not include the stop function when the engine is running). Identification of Any Warning that can Occur : There is no warning with this issue. Involved Components : Component Name 1 : Vehicle Software Component Description : Vehicle Software Component Part Number : 06100173 Revision P08 Component Name 2 : Vehicle Software Component Description : Vehicle Software Component Part Number : 06100076 Revision P37 Supplier Identification : Component Manufacturer Name : NR Address : NR NR Country : NR Chronology : 2022-07-28 One field report involving one vehicle was received. 2022-08-12 Internal Prevost investigation was opened to identify the root cause and to determine if the issue is safety related. 2022-08-22 The software versions were analyzed by Prevost to determine the versions in which the issues were introduced. 2022-09-26 Case was presented on Volvo Product Safety Working Group (PSWG) to evaluate if there is a potential safety related issue. It was concluded that further investigation was required to complete the Part 573 Safety Recall Report 22V-918 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 assessment. 2022-11-08 Case was presented on Volvo Product Safety Working Group (PSWG) to evaluate if there is a potential safety related issue. Decision made to raise the potential issue to the Product Safety Committee (PSC) for review and determination. 2022-11-16 Updated software versions with the engine stop button functionality were released to all Prevost Service Centers. 2022-12-08 Case was presented to Volvo Product Safety Committee (PSC). It was concluded that there was a safety related defect and that a recall is needed. 2022-12-12 Safety Recall report submitted to authorities. No warranty claims related to this issue. No other field reports, incidents, accidents, injury, or fatality were reported. Description of Remedy : Description of Remedy Program : Prevost will install the corrected software versions that include the engine stop button functionality on all potentially affected vehicles (corrected software: 06100173 Revision P09 and 06100076 Revision P38). Letters will be sent to customers to inform them on how to proceed. Prevost will execute this correction free of charge (parts and labor) for the customers. In case a customer has already inspected and corrected this defect before the safety recall has been launched, this customer will be reimbursed according to Prevost reimbursement plan. How Remedy Component Differs from Recalled Component : The remedy component (updated software versions) includes the rear engine stop button functionality while the recalled component (defective software versions) does not. With the updated software versions, the engine can be stopped by pressing the engine stop button in the engine compartment. Identify How/When Recall Condition was Corrected in Production : The defective software versions were introduced in revisions that only affected delivered vehicles, which signifies that the defective software versions were never factory-installed during the vehicle manufacturing process. Consequently, the recall condition did not require any corrections in production as it is not affected by the issue. On November 16, 2022, updated software versions that include the engine stop button functionality were released to all Prevost Service Centers (corrected software: 06100173 Revision P09 and 06100076 Revision P38). Part 573 Safety Recall Report 22V-918 Page 4 The information contained in this report was submitted pursuant to 49 CFR §573 Recall Schedule : Description of Recall Schedule : Please note that Prevost does not have a dealer network and the dates entered for the planned dealer notification begin/end date are only to avoid NHTSA Recall Portal error while submitting the recall report. Planned Dealer Notification Date : JAN 31, 2023 – JAN 31, 2023 Planned Owner Notification Date : JAN 31, 2023 – JAN 31, 2023 * NR – Not Reported

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Writer: mg SAFETY RECALL SR23-02 DATE : January 2023 SECTION : 06 ELECTRICAL SUBJECT: ENGINE REAR STOP BUTTON First Release 01-20-2023 APPLICATION NOTICE TO SERVICE CENTERS Verify vehicle eligibility by checking warranty bulletin status with SAP or via ONLINE WARRANTY SYSTEM available on Service / Warranty tab of Prevost website. Model VIN X3-45 Coaches Model Year:2017 – 2018 2PCG3349XHC736092, 2PCG33495HC736114, 2PCG33490HC736182 2PCG33491HC736188, 2PCG33497HC736194, 2PCG33490HC736196 2PCG33492HC736197, 2PCG33499HC736200, 2PCS33497HC736206 2PCG33495HC736209, 4RKG33491H9737417, 4RKG33493H9737418 4RKG33495H9737419, 4RKG33491H9737420, 4RKG33493H9737421 4RKG33495H9737422, 4RKG33497H9737423, 4RKG33499H9737424 4RKG33490H973742,5 4RKG33492H9737426, 4RKG33497J9737430 4RKG33499J9737431, 4RKG33490J9737432, 4RKG33492J9737433 4RKG33494J9737434, 4RKG33496J9737435. This Safety Recall does not necessarily apply to all the above-mentioned vehicles, some vehicles may have been modified before delivery. The owners of the vehicles affected by this recall will be advised by a letter indicating the Vehicle Identification Number (VIN) of each vehicle concerned. DESCRIPTION On vehicles affected by this recall, the engine stop button located in the engine compartment may not stop the engine when it is running. The issue results from a software problem (the software did not include the stop function when the engine is running). Therefore, a corrected software version that includes the engine stop button functionality must be installed on all potentially affected vehicles (corrected software:06100173 Revision P09 and 06100076 Revision P38). Please make an appointment in a Prevost Service Center or contact your Prevost Service representative to have the vehicle program upgraded. It requires VPG (Vehicle Program Generator) software. For operators having the required equipment & software, please contact a Prevost Service representative to receive the vehicle program update file (refer to procedure below to proceed). SR23-02 Page 2 / 8 Writer: mg EQUIPMENT Required equipment to perform this bulletin: Part No. Description Qty N/A LAPTOP (WITH VPG SOFTWARE) 1 N/A RS232 SERIAL INTERFACE CABLE 1 N/A VIRTUAL SERIAL PORT ADAPTER USB TO RS232 1 066009 INTERFACE HARNESS DB9 PC/MASTER ID-MU 1 SAFETY PRECAUTIONS • Eye protection should always be worn when working in a shop. • Rules for Personal Protection Equipment should always be respected. Wear your PPE including but not limited to the following: Safety First! PROCEDURE DANGER Park vehicle safely, apply parking brake, stop the engine. Prior to working on the vehicle, set the ignition switch to the OFF position. Lockout & Tag out (LOTO) must be performed during set-up, maintenance or repair activities. Refer to your local procedure for detailed information regarding the control of hazardous energy. SR23-02 Page 3 / 8 Writer: mg VERIFICATION OF THE VEHICLE PROGRAM REVISION NUMBER 1. Check the vehicle program revision number with the Driver Information Display (DID) in the dash. 2. Select the Diagnostics menu. Figure 1 3. Select Part Number menu. Figure 2 4. Select Electrical System menu. Figure 3 5. The DID shows the software number (program number) and the actual revision number just after the ‘’P’’ letter for the vehicle (rev 8 in the example). 6. Note the program number and the revision number. NOTE The vehicle program number begins with ‘’06’’ Figure 4 SR23-02 Page 4 / 8 Writer: mg 7. Table 1 shows the revision number needed, according to the program number. 8. Compare the vehicle program number and revision number shown in the DID with the corresponding numbers in Table 1. 9. If the vehicle has the program revision number shown in Table 1 or a higher number, the bulletin is complete. 10. If the vehicle’s program needs to be upgraded, move next section of the bulletin. REQUIRED REVISION NUMBER PROGRAM REVISION 06100076 P38 06100173 P09 Table 1 IMPORTANT If the bulletin is performed by a Prevost Service Center, use computer and VPG software for the program revision number upgrade. If the vehicle operator is having the equipment required to proceed to the vehicle programming, the operator must contact a Prevost Service representative to have the vehicle program update file sent to him. Refer the representative to procedure shown in bulletin SCI19-20, explaining how to send the file. VEHICLE PROGRAM UPDGRADE 1. Connect the 110 power line on the vehicle. 2. Turn the ignition to ‘’ON’’ position. 3. Activate the Hazard flashers. 4. Locate the RS232 serial port into the front service compartment at the right top corner. Figure 5 SR23-02 Page 5 / 8 Writer: mg 5. Remove the cap and keep in a safe place. 6. Connect the computer on the vehicle into the RS232 port. 7. Open the computer management application on your computer. 8. Right click on “My Computer” on the desk and click on Manage menu. Figure 6 9. Click on ‘Device manager’’. 10. Expand the ports list. 11. Check the COM port number and note the number. Figure 7 12. Double click on ‘’COM’’ element to open the properties dialog box. 13. Click on ‘’Port Setting’’ tab. 14. Select 115200 for the Bits per second. 15. Select Hardware for the Row control. 16. Click ‘’OK’’. Figure 8 SR23-02 Page 6 / 8 Writer: mg 17. Make sure you have the vehicle program update, supplied by the Prevost service center, on your computer. 18. Rename the file and remove the last digits ‘’.txt’’. Keep only the extension ‘’.exe’’ NOTE The name of the file that you received should match with the VIN of the vehicle you are about to update. It should look like this example: MP_00142546A06.exe.txt. The four numbers before the last letter are the last 4 numbers of the VIN (short VIN). 19. Launch the vehicle program (double click on the file name or right click on the file name and select Open). 20. Select the port number noted before. 21. Click ‘’Continue’’ button. Figure 9 22. Select the destination of the backup file that will be generated with the update processing. 23. Click on ‘’Continue’’ button. Figure 10 24. Program processes. Figure 11 25. Wait until you get the message ‘’TRANSFER COMPLETED’’. 26. Click ‘’Finish’’ button. Figure 12 SR23-02 Page 7 / 8 Writer: mg 27. Disconnect the computer. 28. From the rear electrical compartment, trip circuit breaker CB6 and reset after 5 seconds. 29. The system needs some time to complete the update. Wait until the head lights shut down or until you have access to information on the DID. 30. Check in the DID the Software number (program number) and compare again with the table 1. Figure 13 31. Reinstall the RS232 serial port cap. 32. Start the vehicle and validate that the rear stop button will stop the running vehicle once pressed. 33. Bulletin is complete. Figure 14 WARRANTY This modification is covered by Prevost’s normal warranty. We will reimburse you half an hour (0.5) of labor upon receipt of a completed A.F.A. Please submit claim via our Online Warranty System, available at www.prevostcar.com (under service \ warranty section). Use Claim Type: “Bulletin/Recall” and select ‘’Safety Recall SR23-02 “. Should you only wish to close the safety recall (without reimbursement), fill-in the ‘’Safety Recall Certification Sheet’’ provided with this bulletin and return it to our warranty department by Email at prevost.onlinewarranty@volvo.com or by fax at 418-831-9301. OTHER VBC Bulletin N/A Access all our Service Bulletins on http://techpub.prevostcar.com/en/ or scan the QR-Code with your smart phone. E-mail us at technicalpublications_prev@volvo.com and type “ADD” in the subject to receive our warranty bulletins by e-mail. Fail Code 06.27-2 Defect Code 49 Syst.Cond R Causal Part 7770029 Writer: mg VEHICLE SERIAL NUMBER: PERFORMED BY OWNER/OPERATOR We hereby certify that Safety Recall Instructions with regard to Safety Recall SR23-02 have been performed. Name: Name: Addr: Addr: Phone: Phone: Fax: Fax: Signature : Signature : Date: Date: If the information mentioned above is incorrect or you are not the owner of this vehicle anymore, please fill this section and return to sender. NEW OWNER: BUSINESS: ADDRESS (including County): TELEPHONE: FAX: Please return this completed document with your A.F.A. form Safety Recall Certification Sheet (Ref: SR23-02)

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US recall notif letter PREVOST SAFETY RECALL SR23-02 NHTSA SAFETY RECALL #23V-918 September 2023 SR23-02 SECOND NOTICE «customer» «add» «po» «city», «st» «zip» USA IMPORTANT SAFETY RECALL – SECOND NOTIFICATION This notice applies to your vehicle(s), see VIN list below. Dear Customer, This notice is sent to you in accordance with the National Traffic and Motor Vehicle Safety Act. Prevost Car US Inc. has decided that a defect which relates to motor vehicle safety exists in certain 2017 & 2018 Prevost X3-45 coaches. DEFECT DESCRIPTION On the affected vehicles, pressing the engine stop button located in the engine compartment may not stop the engine when it is running. SAFETY RISK Pressing the engine stop button may not stop the engine, thus increasing the risk of injury to mechanics when performing repair work in the engine compartment IDENTIFICATION OF ANY WARNING THAT CAN PRECEDE There is no warning associated with this issue. US recall notif letter REMEDY PROGRAM Prevost has released a repair procedure to remedy the problem and will install the corrected software versions that include the engine stop button functionality on all potentially affected vehicles. This service will be provided free of charge. According to our records, you are the registered owner of the following vehicles involved in this safety recall SR23-02 : «VIN1» «VIN5» «VIN2» «VIN6» «VIN3» «VIN7» «VIN4» «VIN8» WHAT YOU NEED TO DO Please make an appointment to your nearest Prevost Service Center and refer to Safety Recall SR23-02 to have the newest software version installed. Optionally, you may have the work performed by qualified personnel of your choice, following Safety Recall SR23-02 available on Prevost Technical Publications web site at this address: http://techpub.prevostcar.com/en/ The time to inspect and repair your vehicle if required is approximately 1/2 hour (0.5 h). PART AND LABOR CLAIM Prevost will reimburse you as described in SR23-02 procedure. Please file an online warranty claim following normal campaign procedures if you are a registered customer, otherwise, contact the Prevost Warranty Department at 1-866-870-2046 for reimbursement instructions. NOTICE REGARDING LEASED VEHICLES If you are a Lessor of vehicles subject to this Notice, you have an obligation under Federal Law to send a copy of this Notice to all Lessees within 10 days. PRE-NOTIFICATION REMEDIES If you have previously paid for repairs as a result of this issue, you may be entitled to recovery of those expenses. Prevost Car US will reimburse the claimant by check for the reasonable amount paid for repairs (i.e. the cost of parts, labor, disposal fees and taxes) that addressed the defect as stated in the safety recall notification. To qualify, repairs must have been completed no earlier than one year prior to the release of the recall and no later than 10 days after the release of the recall mailing of the initial customer notification letter pertaining to the recall. To get reimbursed, please file an online warranty claim following normal Campaign procedures if you are a registered customer, otherwise, contact the Prevost Warranty Department at 1-866-870-2046 for reimbursement instructions. US recall notif letter REIMBURSEMENT OF PRE-NOTIFICATION REMEDIES When a Prevost vehicle is affected by a safety recall and the owner/purchaser (claimant) has the safety-related defect or FMVSS regulatory noncompliance remedied at their own expense prior to receiving the manufacturer notification of the safety recall, Prevost Car (US) Inc. will reimburse the owner/purchaser for the reasonable amount paid (i.e. the cost of parts, labor, disposal fees and taxes) that addressed the safety-related defect or FMVSS regulatory noncompliance as described in the safety recall notification. To qualify, repairs must have been completed no earlier than one year prior to the release of the safety recall (notification to the government) and no later than 10 days after the last mailing of the initial customer notification letter pertaining to the recall. To get reimbursed, please file an online warranty claim following normal campaign procedure if you are a registered customer, otherwise, please contact the Prevost Warranty Department at 1-866-870-2046 for reimbursement instructions. CHANGE OF ADDRESS OR OWNERSHIP If your address has changed, or you no longer own the vehicle(s), please help us update our records. Use the link below to access the Prevost Warranty Support web page https://prevostcar.com/contact/warranty Click on the link ‘Change of address or ownership’, fill the form, save it and email the file to prevost.warranty@volvo.com ASSISTANCE If you need assistance, please contact your nearest Prevost Service Center. You will find the Prevost Parts & Service Centers location at this address: https://prevostcar.com/contact/parts-service-center COMPLAINTS You may submit a complaint if you believe that Prevost Car US has failed or is unable to remedy the defect without charge or within a reasonable time. You may submit the complaint to the Administrator of the National Highway Traffic Safety Administration located at 1200 New Jersey Avenue SE, Washington, DC 20590, USA or call the toll-free Vehicle Safety Hotline at: 1-888-327-4236, (TTY): 1-800-424-9153) or go to http://www.safercar.gov We regret any inconvenience this may cause to your operations but hope you will appreciate our sincere efforts to demonstrate Prevost’s commitment to provide our customers with the best possible product. Truly yours, Prevost Service Team US recall notif letter

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US recall notif letter PREVOST SAFETY RECALL SR23-02 NHTSA SAFETY RECALL #23V-918 January 2023 «customer» «groupe»-«code» «add» «po» «city», «st» «zip» USA IMPORTANT SAFETY RECALL This notice applies to your vehicle(s), see VIN list below. Dear Customer, This notice is sent to you in accordance with the National Traffic and Motor Vehicle Safety Act. Prevost Car US Inc. has decided that a defect which relates to motor vehicle safety exists in certain 2017 & 2018 Prevost X3-45 coaches. DEFECT DESCRIPTION On the affected vehicles, pressing the engine stop button located in the engine compartment may not stop the engine when it is running. SAFETY RISK Pressing the engine stop button may not stop the engine, thus increasing the risk of injury to mechanics when performing repair work in the engine compartment IDENTIFICATION OF ANY WARNING THAT CAN PRECEDE There is no warning associated with this issue. US recall notif letter REMEDY PROGRAM Prevost has released a repair procedure to remedy the problem and will install the corrected software versions that include the engine stop button functionality on all potentially affected vehicles. This service will be provided free of charge. According to our records, you are the registered owner of the following vehicles involved in this safety recall SR23-02 : «VIN1» «VIN5» «VIN9» «VIN13» «VIN17» «VIN21» «VIN2» «VIN6» «VIN10» «VIN14» «VIN18» «VIN22» «VIN3» «VIN7» «VIN11» «VIN15» «VIN19» «VIN23» «VIN4» «VIN8» «VIN12» «VIN16» «VIN20» «VIN24» WHAT YOU NEED TO DO Please make an appointment to your nearest Prevost Service Center and refer to Safety Recall SR23-02 to have the newest software version installed. Optionally, you may have the work performed by qualified personnel of your choice, following Safety Recall SR23-02 available on Prevost Technical Publications web site at this address: http://techpub.prevostcar.com/en/ The time to inspect and repair your vehicle if required is approximately 1/2 hour (0.5 h). PART AND LABOR CLAIM Prevost will reimburse you as described in SR23-02 procedure. Please file an online warranty claim following normal campaign procedures if you are a registered customer, otherwise, contact the Prevost Warranty Department at 1-866-870-2046 for reimbursement instructions. NOTICE REGARDING LEASED VEHICLES If you are a Lessor of vehicles subject to this Notice, you have an obligation under Federal Law to send a copy of this Notice to all Lessees within 10 days. PRE-NOTIFICATION REMEDIES If you have previously paid for repairs as a result of this issue, you may be entitled to recovery of those expenses. Prevost Car US will reimburse the claimant by check for the reasonable amount paid for repairs (i.e. the cost of parts, labor, disposal fees and taxes) that addressed the defect as stated in the safety recall notification. To qualify, repairs must have been completed no earlier than one year prior to the release of the recall and no later than 10 days after the release of the recall mailing of the initial customer notification letter pertaining to the recall. To get reimbursed, please file an online warranty claim following normal Campaign procedures if you are a registered customer, otherwise, contact the Prevost Warranty Department at 1-866-870-2046 for reimbursement instructions. US recall notif letter REIMBURSEMENT OF PRE-NOTIFICATION REMEDIES When a Prevost vehicle is affected by a safety recall and the owner/purchaser (claimant) has the safety-related defect or FMVSS regulatory noncompliance remedied at their own expense prior to receiving the manufacturer notification of the safety recall, Prevost Car (US) Inc. will reimburse the owner/purchaser for the reasonable amount paid (i.e. the cost of parts, labor, disposal fees and taxes) that addressed the safety-related defect or FMVSS regulatory noncompliance as described in the safety recall notification. To qualify, repairs must have been completed no earlier than one year prior to the release of the safety recall (notification to the government) and no later than 10 days after the last mailing of the initial customer notification letter pertaining to the recall. To get reimbursed, please file an online warranty claim following normal campaign procedure if you are a registered customer, otherwise, please contact the Prevost Warranty Department at 1-866-870-2046 for reimbursement instructions. CHANGE OF ADDRESS OR OWNERSHIP If your address has changed, or you no longer own the vehicle(s), please help us update our records. Use the link below to access the Prevost Warranty Support web page https://prevostcar.com/contact/warranty Click on the link ‘Change of address or ownership’, fill the form, save it and email the file to prevost.warranty@volvo.com ASSISTANCE If you need assistance, please contact your nearest Prevost Service Center. You will find the Prevost Parts & Service Centers location at this address: https://prevostcar.com/contact/parts-service-center COMPLAINTS You may submit a complaint if you believe that Prevost Car US has failed or is unable to remedy the defect without charge or within a reasonable time. You may submit the complaint to the Administrator of the National Highway Traffic Safety Administration located at 1200 New Jersey Avenue SE, Washington, DC 20590, USA or call the toll-free Vehicle Safety Hotline at: 1-888-327-4236, (TTY): 1-800-424-9153) or go to http://www.safercar.gov We regret any inconvenience this may cause to your operations but hope you will appreciate our sincere efforts to demonstrate Prevost’s commitment to provide our customers with the best possible product. Truly yours, Prevost Service Team

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-918 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Prevost Car (US) Inc. Submission Date : JAN 10, 2023 NHTSA Recall No. : 22V-918 Manufacturer Recall No. : SR23-02 Manufacturer Information : Manufacturer Name : Prevost Car (US) Inc. Address : 201 South Avenue South Plains NJ 07080 Company phone : 908-222-7211 Population : Number of potentially involved : 22 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2017-2018 Prevost X3-45 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : The population was determined by identifying all vehicles currently operating with the defective software versions. The concerned vehicles are certain MY2017 to MY2018 Prevost X3-45 buses manufactured during the indicated production dates. The recalled products are limited to these specific vehicles since they are the only ones operating with the defective software versions. A total of 16 MY2017 Prevost X3-45 and 6 MY2018 Prevost X3-45 vehicles are affected by the recall. Production Dates : APR 21, 2016 – JUL 07, 2017 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : On certain vehicles, the engine stop button located in the engine compartment may not stop the engine when it is running. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : The engine stop button may not stop the engine, thus increasing the risk of injury to mechanics when performing repair work in the engine compartment. Prevost has not received any reports of death or injury associated with this defect. Therefore, we consider this as a proactive measure to protect the public from the potential risk associated with this Part 573 Safety Recall Report 22V-918 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 defect. Description of the Cause : The issue results from a Prevost software development error (the software did not include the stop function when the engine is running). Identification of Any Warning that can Occur : There is no warning with this issue. Involved Components : Component Name 1 : Vehicle Software Component Description : Vehicle Software Component Part Number : 06100173 Revision P08 Component Name 2 : Vehicle Software Component Description : Vehicle Software Component Part Number : 06100076 Revision P37 Supplier Identification : Component Manufacturer Name : NR Address : NR NR Country : NR Chronology : 2022-07-28 One field report involving one vehicle was received. 2022-08-12 Internal Prevost investigation was opened to identify the root cause and to determine if the issue is safety related. 2022-08-22 The software versions were analyzed by Prevost to determine the versions in which the issues were introduced. 2022-09-26 Case was presented on Volvo Product Safety Working Group (PSWG) to evaluate if there is a potential safety related issue. It was concluded that further investigation was required to complete the Part 573 Safety Recall Report 22V-918 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 assessment. 2022-11-08 Case was presented on Volvo Product Safety Working Group (PSWG) to evaluate if there is a potential safety related issue. Decision made to raise the potential issue to the Product Safety Committee (PSC) for review and determination. 2022-11-16 Updated software versions with the engine stop button functionality were released to all Prevost Service Centers. 2022-12-08 Case was presented to Volvo Product Safety Committee (PSC). It was concluded that there was a safety related defect and that a recall is needed. 2022-12-12 Safety Recall report submitted to authorities. No warranty claims related to this issue. No other field reports, incidents, accidents, injury, or fatality were reported. Description of Remedy : Description of Remedy Program : Prevost will install the corrected software versions that include the engine stop button functionality on all potentially affected vehicles (corrected software: 06100173 Revision P09 and 06100076 Revision P38). Letters will be sent to customers to inform them on how to proceed. Prevost will execute this correction free of charge (parts and labor) for the customers. In case a customer has already inspected and corrected this defect before the safety recall has been launched, this customer will be reimbursed according to Prevost reimbursement plan. How Remedy Component Differs from Recalled Component : The remedy component (updated software versions) includes the rear engine stop button functionality while the recalled component (defective software versions) does not. With the updated software versions, the engine can be stopped by pressing the engine stop button in the engine compartment. Identify How/When Recall Condition was Corrected in Production : The defective software versions were introduced in revisions that only affected delivered vehicles, which signifies that the defective software versions were never factory-installed during the vehicle manufacturing process. Consequently, the recall condition did not require any corrections in production as it is not affected by the issue. On November 16, 2022, updated software versions that include the engine stop button functionality were released to all Prevost Service Centers (corrected software: 06100173 Revision P09 and 06100076 Revision P38). Part 573 Safety Recall Report 22V-918 Page 4 The information contained in this report was submitted pursuant to 49 CFR §573 Recall Schedule : Description of Recall Schedule : Please note that Prevost does not have a dealer network and the dates entered for the planned dealer notification begin/end date are only to avoid NHTSA Recall Portal error while submitting the recall report. Planned Dealer Notification Date : JAN 31, 2023 – JAN 31, 2023 Planned Owner Notification Date : JAN 31, 2023 – JAN 31, 2023 * NR – Not Reported

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