2025 Peterbilt 536 TSBs

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.

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."

Support Order Inquiry case.

Software updates are now available to complete this campaign.

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

ball stud that does not meet hardness specification. The ball stud may fracture, leading to a loss of steering and reduced vehicle control, increasing the risk of a crash. Customers will be advised NOT TO DRIVE TRUCKS until the remedy is completed.

does not meet hardness specification. The ball stud may fracture, leading to a loss of steering and reduced vehicle control, increasing the risk of a crash. Customers will be advised NOT TO DRIVE TRUCKS until the remedy is completed.

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 chassis that have completed 24PBGB inspection with GOOD results but have not filed warranty claims to close out the campaign in SIR will need to file a claim and close out 24PBGD. Secondary inspection and replacement procedures are now available through this bulletin for parts found to be SUSPECT in the 24PBGB Safety Recall. Customers will be advised NOT TO DRIVE TRUCKS until this remedy is completed.

procedures for drag links identified as SUSPECT under 24PBGA ONLY. Certain chassis that have completed 24PBGA inspection with GOOD results but have not fi led warranty claims to close out the campaign in SIR will need to fi le a claim and close out 24PBGC. Secondary inspection and replacement procedures are now available through this bulletin for parts found to be SUSPECT in the 24PBGA Safety Recall. Customers will be advised NOT TO DRIVE TRUCKS until this remedy is completed.

Certain chassis that have completed 24PBGB inspection with GOOD results but have not filed warranty claims to close out the campaign in SIR will need to file a claim and close out 24PBGD. Secondary inspection and replacement procedures are now available through this bulletin for parts found to be SUSPECT in the 24PBGB Safety Recall. Customers will be advised NOT TO DRIVE TRUCKS until this remedy is completed.

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"

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."

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.

is no longer compatible.

Operators Manuals are incorrect.

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."

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.

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.

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