23KWA Loss of Electronic Stability Control – 2023 Kenworth T680

SEOCONTENT-START

No. 23KWA (23PBA) / 23V007 / 2023-007
Page 1 of 4
Safety Recall 23KWA / 23PBA: T680 / 579 Battery-Electric
Vehicle Stability Control Mass Calculation Author: Gunnar Nelson 2/22/2023 Title (metadata) Safety Recall 23KWA / 23PBA: T680 / 579 Battery-Electric Vehicle Stability Control Mass Calculation Description Bulletin No. Bulletin Category T680 / 579 Battery-Electric Vehicle Stability Control Mass Calculation 23KWA (23PBA) / 23V007 / 2023-007
For Recalls: Recall # / NHTSA # / TC # Powertrain (Recall)
Supplier
(Recall Only) Image
Service Subject
Safety Recall 23KWA / 23PBA: T680 / 579 Battery-Electric Vehicle Stability Control Mass Calculation Section Electric Propulsion System – 46 What’s New Abstract Safety Recall –
The battery-electric heavy duty electronic stability control program underestimates the mass of the vehicle. An incorrect estimate of vehicle mass can negatively impact the performance of the stability control system and may increase the risk of a crash. Updated software will be loaded by Meritor representatives to correct the miscalculation.
Revision Condition / Complaint / Introduction
Peterbilt Motors Company has determined that a defect, which relates to motor vehicle safety, exists in certain Model year 2022-2023 579 Battery-Electric vehicle chassis. The battery-electric heavy duty electronic stability control program in the current software underestimates the mass of the Safety Recall 23KWA / 23PBA: T680 / 579 Battery-Electric Vehicle Stability Control Mass Calculation 23KWA (23PBA)
/ 23V007 / 2023-007 vehicle. An incorrect estimate of vehicle mass can negatively impact the performance of the stability control system and may increase the risk of a crash. NOTE When software is updated, vehicles may experience incorrect operation of certain components. These issues will be addressed in a future software update. Refer to Bulletin 46- 003 for more information. 1. Power gauge will display approximate axle speed instead of actual power usage.
2. Air conditioner compressor will not operate below 10mph (16kph) or over 40mph (65kph). HVAC Blower and heater will operate normally.
3. Low air and low coolant audible alarms (buzzers) will not operate below 10mph (16kph). Low air and low coolant visual warnings will operate normally. Chassis Affected / Situation 38 (36 US and 2 CAN) Model Year 2021-2023 Models 579EV Battery-Electric Vehicles (BEV) with Meritor electric drive axles and software R4 or below (PNs Q30-6025, Q30-6026, or Q30- 6028). PPD – Component Sales – N/A Safety Recall Meritor has established a repair procedure and is providing a software update for affected chassis. Service Action / Resolution Affected chassis will be marked in SIR with campaign code 23PBA. This campaign code will be marked “complete” when repairs have been confirmed by Meritor. All repairs will be coordinated and performed by Meritor representatives. No warranty claim is necessary for affected vehicles. Page 2 of 4 Safety Recall 23KWA / 23PBA: T680 / 579 Battery-Electric Vehicle Stability Control Mass Calculation 23KWA (23PBA)
/ 23V007 / 2023-007 Warranty Software only – No parts required Software to be installed by Meritor representative. Parts The repair will be coordinated and performed by Meritor. However, Peterbilt is required to notify customers of the existence of the identified safety defect. Dealers can contact Meritor OnTrac at 866-668-7221 with any questions regarding this recall. NOTE When software is updated, vehicles may experience incorrect operation of certain components. These issues will be addressed in a future software update. Refer to Bulletin 46- 003 for more information. 1. Power gauge will display approximate axle speed instead of actual power usage.
2. Air conditioner compressor will not operate below 10mph (16kph) or over 40mph (65kph). HVAC Blower and heater will operate normally.
3. Low air and low coolant audible alarms (buzzers) will not operate below 10mph (16kph). Low air and low coolant visual warnings will operate normally. Background PB Chassis List PB US Customer Letter Page 3 of 4 Safety Recall 23KWA / 23PBA: T680 / 579 Battery-Electric
Vehicle Stability Control Mass Calculation 23KWA (23PBA)
/ 23V007 / 2023-007
Page 4 of 4 Procedure Links
PB Canada Customer Letter (English & French) PBUS☒ PBCA☒
Same bulletin published to KW & PB regions? Choose an item. Click or tap to enter a date.
Channels
Publish On

**************************************************************************************************************

Customer Service Department
Kenworth Truck Company
P.O. Box 1000
Kirkland, Washington 98083-1000
(425) 825-5888
Subject: Safety Recall 23KWA – T680 Battery-Electric Vehicle Stability Control Mass Calculation
IMPORTANT SAFETY RECALL
8
First Class Mail US Postage PAID
Seattle, WA Permit No. 2389 March 2, 2023
IMPORTANT SAFETY RECALL
This notice applies to your vehicle: VIN: This notice is sent to you in accordance with the National Traffic and Motor Vehicle Safety Act. Subject: Safety Recall 23KWA – T680 Battery-Electric Vehicle Stability Control Mass Calculation NHTSA Recall number 23V007
EXPIRATION DATE: NONE Dear Kenworth Customer,
Kenworth Truck Company has decided that a defect which relates to motor vehicle safety exists in certain model year 2023 T680 Battery-Electric Vehicles manufactured from 01/25/2022 through 10/13/2022.
The battery-electric heavy duty electronic stability control program in software version R4 and below underestimates the mass of the vehicle. An incorrect estimate of vehicle mass can adversely impact the performance of the stability control system and may lead to a risk of a crash.
Kenworth has initiated a recall to remedy the defect in cooperation with Meritor. The repair will be coordinated and performed by Meritor free of charge. However, Kenworth is required to notify customers of the existence of the identified safety defect. If needed, please contact your Kenworth dealer. To find your Kenworth dealer, please visit Dealer Locator at www.Kenworth.com or scan the QR code at the top of this letter. This repair will take approximately 1 hour to complete.
Upgrading to R5 software may cause the following incorrect operation of certain components: Power gauge will display axle speed instead of actual power usage.
Air conditioner compressor will not operate below 10mph or over 40 mph. HVAC Blower and heater will operate normally.
Low air and low coolant audible alarms (buzzers) will not operate below 10mph (16kph). Low air and low coolant visual warnings will operate normally.
These programming faults will be addressed with a future software upgrade. Owners will be contacted about the software upgrade separately when the software is available. The problem is… T680 Battery-Electric Vehicle mass estimation programming is incorrect
What your dealer will do… Meritor will install new software to correct the miscalculation
What you must do … If needed, please contact your Kenworth dealer to help coordinate this repair If you had this repair performed before you received this letter, you may be eligible to receive reimbursement for the cost of obtaining a pre-notification remedy of the problem associated with this recall. Receipts for parts and/or labor are required for consideration of reimbursement.
If you require further information about this campaign, reimbursement of a pre-notification remedy associated with this recall, or experience any difficulty in making arrangements for this repair, please contact Kenworth Customer Service, provide your name, your dealer’s city and state, your phone number, your email address (optional), the last 8 digits of your VIN, the bulletin number, and your question, using one of the following:
Email: Kenworth.Campaigns@paccar.com with the bulletin number in the subject line
or
Mail: Kenworth Truck Company, P.O. Box 1000, Kirkland, WA 98083-1000, Attn: Customer Service Department
or
Phone: 425-828-5888
If you conclude that Kenworth Truck Company has not enabled you to remedy this defect in reasonable time and without charge, you may submit a complaint to: Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue, S.E., Washington, DC 20590, 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.
Federal regulation requires that any vehicle lessor receiving this recall notice must forward a copy of this notice to the lessee within ten days. If you no longer own this vehicle, we would appreciate your advising us of the new owner if you know their name.
We regret any inconvenience that this work may cause you and appreciate your cooperation in this matter.
Thank you, Annick Hollingsworth Director of Service Platforms
Kenworth Truck Company

**************************************************************************************************************

OMB Control No.: 2127-0004
Part 573 Safety Recall Report 23V-007
The information contained in this report was submitted pursuant to 49 CFR §573
Manufacturer Name : Submission Date :
PACCAR Incorporated JAN 16, 2023 NHTSA Recall No. : 23V-007 Manufacturer Recall No. : 23PBA and 23KWA Manufacturer Information :
Manufacturer Name : PACCAR Incorporated
Address : 777 106TH AVENUE NORTHEAST BELLEVUE WA 98004
Company phone : 940 591 4220
Population :
Number of potentially involved : 46 Estimated percentage with defect : 100 %
Vehicle Information :
Vehicle 1 : 2021-2023 Peterbilt 579
Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : HYBRID ELECTRIC
Descriptive Information : All Phase 2 Battery Electric Vehicles with R4 Software and earlier with part numbers Q30-6025 through Q30-6028.
There are 46 total trucks in the recall for Peterbilt Model 579 and Kenworth Model T680. Production Dates : FEB 26, 2020 – DEC 20, 2022
VIN Range 1 : Begin : 1XPBDL9E2ND730682 End : 1XPBAL9X0PD893571 ✔ Not sequential Vehicle 2 : 2023-2023 Kenworth T680
Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : PICKUP TRUCK Power Train : HYBRID ELECTRIC
Descriptive Information : All Phase 2 Battery Electric Vehicles with R4 Software and earlier with part numbers Q30-6025 through Q30-6028.
There are 46 total trucks in the recall for Peterbilt Model 579 and Kenworth Model T680. Production Dates : JAN 10, 2022 – DEC 20, 2022
VIN Range 1 : Begin : 1XKYDL9X4PR163107 End : 1XKYDL9X7PR471193 ✔ Not sequential Description of Defect :
Description of the Defect : The battery electric heavy duty electronic stability control program
underestimates the mass of the vehicle. Part 573 Safety Recall Report 23V-007 Page 2 FMVSS 1 : NR
FMVSS 2 : 136 – Electronic Stability Control Systems on Heavy Vehicles
Description of the Safety Risk : An incorrect estimate of vehicle mass can negatively impact the performance of the stability control system and may lead to a risk of a crash.
Description of the Cause : Supplier software parameter is incorrectly reporting values leading to under- estimating mass of vehicle. Identification of Any Warning
that can Occur : None Involved Components : Component Name 1 : Electronic Stability Control
Component Description : Software for Battery Electric Stability Control Component Part Number : Q30-6025 -Q30-6028 Supplier Identification : Component Manufacturer
Name : Meritor
Address : 2415 Auto Park Way
Escondido California 92029 Country : United States Chronology :
11/1/2022 – Safety and Compliance opened investigation into subject. 11/2/2022 – Safety and Compliance talked with Engineering to get more information of the subject. 11/3/2022 – Safety and Compliance conducted a regulatory search to find all applicable regulations. 11/4/2022 – Safety and Compliance was included in Meritor/PACCAR weekly meeting.
11/10/2022 – Product Safety and Compliance talked with Engineering about testing plan and completion status. 11/11/2022 – Peterbilt Safety and Compliance discussed subject with Bendix. Received pertinent information involving system and possible effects. The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 23V-007 Page 3 11/14/2022 – Peterbilt Safety and Compliance sent questions to Meritor. Received information about the software and next steps. 11/30/2022 – Peterbilt Safety and Compliance got updates from Engineering about Testing results.
Peterbilt Safety and Compliance reached out to Field Service about customer complaints. No complaints have been submitted. Warranty search found no claims submitted. 12/5/2022 – Product Safety and Compliance sent estimated chassis population to customer service for US/ Canada split preparing for presentation. 12/6/2022 – Product Safety and Compliance completed US/Canada split for estimated chassis population at this time. 12/9/2022 – Product Safety and Compliance presented subject to Safety Committee. Committee requested more detail on the issue. 12/14/2022 – Meritor R5 software proposed for implementation. 12/16/2022 – Peterbilt Safety and Compliance reached out to Paccar Technical Center and supplier about previous completed supplier testing. 12/20/2022 – Meritor implemented containment plan of software version R5. 1/5/2023 – Safety and Compliance verifying affected chassis list.
1/10/2023 –Safety Committee meeting held to answer questions from previous meeting. Concluded with issuing a safety recall. Description of Remedy :
Description of Remedy Program : Paccar will notify owners, and dealers that a software update will need to
be performed on affected trucks. Owners who incurred costs to obtain a remedy for the problem addressed in the recall in advance of receiving notification may seek reimbursement through the process outlined in the general reimbursement plan on file. How Remedy Component Differs from Recalled Component :
Identify How/When Recall Condition was Corrected in Production : The remedied vehicles will have a new release of the software, which is version R5.
Vehicles in production received a software version R5 as of December 20th, 2022. Recall Schedule : The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 23V-007
Page 4
The information contained in this report was submitted pursuant to 49 CFR §573
Description of Recall Schedule : Customers will be notified within 60 days. Software updates are already
in progress.
Planned Dealer Notification Date : MAR 17, 2023 – MAR 17, 2023
Planned Owner Notification Date : MAR 17, 2023 – MAR 17, 2023
* NR – Not Reported

SEOCONTENT-END