Safety Recall 25KWB: T180/T280/T380/T480 Exterior
Lighting Programming
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Number
25KWB / 25V041 / 2025-036
Supplier
Kenworth Truck Company
Description
Safety Recall 25KWB: T180/T280/T380/T480 Exterior Lighting Programming
Date
2/7/2025
What's New
Safety Recall
Updated software and repair procedures are now available.
The Exterior Lighting Switch (ELS) in certain T180/T280/T380/T480 chassis may not function and can be reset
only by a key cycle. This issue may result in non-compliance with FMVSS/CMVSS 101 and 108.
Affected chassis must have the Vehicle Software updated.
Introduction
The Exterior Lighting Switch (ELS) in certain T180/T280/T380/T480 chassis may not function and can be reset
only by a key cycle. This issue may result in non-compliance with the following US Federal Motor Vehicle
Safety Standards (FMVSS) or Canadian Motor Vehicle Safety Standards (CMVSS) Regulations:

° FMVSS 101 - Controls and Displays

© FMVSS 108 - Lamps, Reflective Devices, and Associated Equipment

* CMVSS 101 - Controls, Tell-tales, Indicators, and Sources of I|lumination

° CMVSS 108 - Lamps, Reflective Devices, and Associated Equipment.
If the ELS fails, the hazard lights and the backlight brightness adjustment may not function. As a result, the lack
of hazard lights may not alert other drivers. Failure to adjust the backlight brightness may distract the operator

or make it difficult to see critical safety information, which may increase the risk of a crash.
Warning Which Can Precede or Occur: None
Situation
2,805 (2,685 US and 120 Canada) Vehicle Model Year 2023-2026 T180 / T280 / T380 / T480 chassis built from
7/5/2022 through 12/20/2024.
Resolution
Safety Recall
Service all chassis affected that enter your dealership, even if the customer has no issue with the chassis.
1. Review the attached chassis list for your dealer code and schedule your customer(s) for service if their
chassis is on the list.
2. In Service Management, select Campaign 25KWB to add it to the case. If the unit is released back into
service without performing the repair, make sure to also release the Campaign in Service Management
3. If you are not using Service Management to start repair orders, review SIR for “Complete” or “In
Process" next to the 25KWB campaign code prior to performing this repair.
4. Follow the procedures below to update software in Vehicle Electronic Contro! Unit (VECU3), Digital
Display (DD), and Central Security Gateway (CSG2).
Federal Law
It is a violation of Federal law for a dealer to sell or lease new vehicles covered by this recall until the defect or
noncompliance has been corrected.
Warranty
There is no time or mileage limit for this recall. Kenworth will pay for labor:
¢ 0.5 hours labor to update VECU, Digital Display, and CGS2 software. Use Quick Claim Code 25KWB.
¢ File an additional claim for extraordinary circumstances. A quick claim for standard labor must be filed

first.
¢ Issues arising from using prior DAVIE4 software versions will not be covered by warranty.
© File the claim within 14 days in accordance with Warranty Policy CA009.
Take off parts disposition: N/A
PRWS CLAIM CODING
Campaign |25KWB |Campaign Type |Safety Recall
Code:
Claim Truck Repair Type Proactive
Category:
Customer |225 Causal Code 93
Concern
Code
Corrective 12 Responsibility /Camp
Action Code Code:
Failure 003- Causal Part Q21-1157-
Location 006-003 013-013
Supplier N/A B25-08A
Code 0.5 hrs
Update
software for
CSG2, DD,
SRT Code VECU3 and
perform
repair
verification
per bulletin
procedure
Procedure
Please follow your dealership's safety procedures and precautions to ensure the vehicle can be safely

repaired and maintained.
Read all steps before beginning.
Ensure that DAVIE4 is up to date before connecting to a chassis for diagnostics or attempting to update
any software.
1. Process a PVP file for the chassis
a. Open PACCAR Vehicle Pro.
b. Enter the chassis number.
c. Select SAVE AND CONTINUE.
d. Select SUBMIT.
2. Connect a battery charger during programming.
3. Update software for VECU3, CSG2, and DD using DAVIE4
a. Connect DAVIE4 using NEXIQ adapter and 9-pin diagnostic connector.
b. Connect ethernet cable.
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