2024 Peterbilt 537 TSBs

Loss of communication between the right-hand shift stalk and the vehicle may result in the vehicle being disabled after it comes to a stop, thereby increasing the risk of crash or injury. A warning will appear on the dash display when communication is lost, including transmission or engine warnings, ! next to DNR/DNRP indicator, - in the DNR/DNRP indicator, and/or chimes, depending upon whether you are operating a diesel/gas or battery electric vehicle.

Control Unit (VECU) part number Q21-1157-013-011 / Q21-1157-013-013. Parts and procedures for Phase 2 chassis will be available at a later date. This bulletin will be updated at that time. Please refer to the condition section for more details. Certain Ethernet Multiplexed Architecture (EMUX) chassis fail to conform to Federal and Canada Motor Vehicle Safety Standards (FMVSS/CMVSS) No. 108. Delayed or unsteady illumination of the vehicles stop lamps, reverse lamps, turn signal lamps and inadvertent change in headlamp illumination or lift axle position may"

pedal to stick, and may increase the risk of a crash. Driver may feel sticking or that pedal does not return to idle once released. Pressing the service brake will overcome a stuck throttle pedal and allow the vehicle to stop. All affected chassis must perform a date inspection on the throttle pedal. If the date falls on or between suspect range, 08/12/2022 through 12/14/2022, throttle pedal is considered bad and will need to be replaced. Safety Recall start date: 03/27/2025

chassis may not function and can be reset only by a key cycle. This issue may result in non-compliance with US Federal Motor Vehicle Safety Standards (FMVSS) or Canadian Motor Vehicle Safety Standards (CMVSS) 101 and 108. This bulletin will be updated when software and programming procedures are available."

assembly, which may cause the pedal to stick, and may increase the risk of a crash. Driver may feel sticking or that pedal doesnt return to idle once released. Pressing the service brake will overcome a stuck throttle pedal and allow the vehicle to stop. This bulletin will be updated once parts and procedures are available. INTERIM Safety Recall start date: 01/29/2025

A new Starter Troubleshooting Guide has been created to provide a comprehensive list of starting system checks, which should reduce unnecessary starter replacements and associated warranty claims. Engine starting system warranty claims now require a completed Starter Checklist, a Battery Pack Midtronics Report, and a Cable Drop Midtronics Report. Claims filed without these documents may be denied.

code 3281830) the Pre-Filter may become clogged and cause premature failure/breach of the primary intake air filter. In some cases, a failed/breached primary filter can result in unusually high engine RPMs and high crankcase pressure. However, a failed/breached primary filter may not exhibit any of these symptoms. The immediate fix for this issue is to modify the Pre-Filter by removing the filter media from the base plate, and then reinstalling the modified Pre-Filter base plate.

Protection Valves may not meet the standard trailer brake release timing requirements by 0.5 seconds. A delay in the trailer brake release may create momentary instability to the trailer and increase the risk of a crash.

trailer brake release timing requirements by 0.5 seconds due to the size of the tractor protection valve fitting and hose. A delay in the trailer brake release can create instability to the trailer and increase the risk of a crash.

transmission on certain vehicles.[

transmission, featuring a more durable design for enhanced long-term performance.

software with an incorrect variable. This software issue may cause DTC 521215-2 to set, the Transmission Dash Light to Illuminate, and shifting to be restricted. A software update is now available to fix the issue. Fix-as-Fail start date: 03/19/2025.

Certain Peterbilt vehicles from Model Year 2025 may contain steering gear(s) with sector shaft gear teeth that may prematurely wear, crack, or fracture and interfere with the steering gear mechanism. This may lead to steering gear binding, which may increase the risk of a crash.

Part numbers E0l-1012 (Adapter, Jack TX-8), E0l-1014 (Front Seal Installer), and E0l-1015 (Rear Seal Installer) are currently available to order

Steering Gears repaired under this bulletin MUST be entered into the Serial Number Tracking Form for 24PBC.

This bulletin will be updated once repair parts are available. The right-hand shift stalk may have an improper wire harness terminal crimp within the wire harness connector. Loss of communication between the right-hand shift stalk and the transmission may result in the vehicle becoming disabled after it comes to a stop thereby increasing the risk of crash or injury. A transmission fault will appear on the dash display if communication is lost.

This may allow the driveline fasteners to become loose, increasing the risk of a crash.

directs dealers to open a TCS365 case to order new labels. Warranty codes for inspection and label replacement have been updated. Certain Battery Electric Vehicles that are subject to California Air Resources Board (CARB) regulations have GHG labels that are missing the CARB Enhanced EV and FCEV Statement.

part number Q21-1157-013-011 / Q21-1157-013-013 / Q21-1157-002-002 / Q21-1157-004-004 / Q21-1157-006-006 / Q21-1157-009-009. See attached Parts Matrix for required parts per chassis.

Emissions Control Information (VECI) labels that are missing the CARB Enhanced EV and FCEV Statement.

confirmed correct before updating the Digital Display. Parts and Procedure section also updated to include the Vehicle Emissions Control Information label ordering and installation instructions. This label is required for all chassis involved in R2306. Included additional reference to Cummins bulletin C7014 in the procedure section for ordering emissions labels.

Software has been campaigned for both processes, and software assistance is no longer required. All EMUX jumper harness retrofit procedures have been updated to include a soft reverification step and procedures for 520, 567 car carrier, and 2.1m MD have been updated to include R&R procedures for VECU3. Parts Matrix has been updated VECU3 has been added to numerous chassis.

holder that is connected directly to the battery for constant power. This fuse powers a 70A relay that is used for the safety systems of the truck and is located on the right rear side of the battery box. Due to the fitment of the battery box lid from the chassis manufacturers, moisture and debris are able to fall through the space between the battery box lid and side of the battery box body. This may lead to corrosion of the fuse and holder, which may result in failure of the fuse, loss of current flow, and ultimately the inability to operate the truck. This quality issue affects Kenworth T380 and Peterbilt 537 chassis on Jarco propane bobtail units produced from January 2023 until January 2024.

procedure has been updated with additional note boxes for clear instructions. PB: The repair procedure has been updated with additional note boxes for clear instructions."

the end customer.

Software updates are now available to complete this campaign.

This could result in loss of mirror glass, reducing rear visibility and increasing the risk of an accident or injury. Missing mirrors cause non-compliance with FMVSS 111 / CMVSS 111. Mirror glass lock rings must be inspected and, if necessary, reseated.

is no longer compatible.

Operators Manuals are incorrect.

Certain Meritor 10-16K and 18-23K Front Steer Drive Axles may have insufficient wheel bearing grease. Insufficient lubrication in the wheel bearing may cause the wheel hub to overheat and become damaged, which may increase the risk of a crash or thermal event . The driver may hear noise, excessive steering play, and/or smoke from the front wheel.

Insuffi cientlubricati on in the wheel bearing may cause the wheel hub to overheat and become damaged, which may increasethe risk of fi re. The driver may hear noise, excessive steering play, and/or smoke from front wheel. INTERIM Safety Recall start date: 12/12/2024

Bluetooth to not function properly when the driver tries to make/receive a call.

once they are off the production line, but still on the premises. The tags are left on the trucks which have been sold.

2 chassis added to the chassis list. Peterbilt: Dealers should check the chassis list and SIR weekly for VIN changes. 10 chassis added to the chassis list."

It must be used if safety recall 25PACF is performed prior to or at the same time as this repair since the 25PACF remedy also satisfies this safety recall.

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 Soft ware updated.

Certain Vehicle Model Year 2021-2025 Peterbilt chassis configured for trailer towing require a software update for the Bendix EC80 ABS ECU. Software update procedures for certain Battery-Electric Vehicles (BEV) and EC80 ABS ECU part numbers are not yet available. This bulletin will be updated when software update procedures are available for these chassis. Safety Recall publish date: 1/10/25