2019 Jeep Wrangler: ABS light or ABS activating

Filed Sep 24, 2026 · Transmission · NY

The 48-Volt Lithium-Ion eTorque Hybrid Battery Pack (Mopar Power Pack Unit/PPU) on my 2019 Jeep Wrangler Sahara Unlimited (~55K miles) failed. The failed component may be available on video by the dealership. Check engine light first appeared early XXX. Earliest dealership appointment was late August 2026. At that visit, dealer diagnosed DTCs P0A94 (recurring, including P0A94-03) and U0412, and performed a software update flashing the BPCM (Battery Pack Control Module) firmware from 05057870AN to 05057870AV per a Technical Service Bulletin. This was covered under warranty at no charge; vehicle was returned to me. Days later, the check engine light returned along with a battery warning light and additional indicators, including ABS among others I could not fully identify. The vehicle then lost power and stopped running while in the roadway, disabled in an active lane of travel — a safety hazard to myself and surrounding traffic. Vehicle was towed to the dealership XXX. On this second visit, the dealership attributed the failure to moisture exposure and corrosion at the PPU connector/harness, denied warranty coverage, and charged me $4,561.90. I received the repaired vehicle XXX. I opened a case with Stellantis Customer Care (Case #XXX) with case manager [XXX] to request a technical review of the failure and the warranty denial. [XXX] stated he contacted the dealership five times seeking information or resolution and received no response. He offered rental car reimbursement up to $50/day during the repair. Dealership diagnosed and repaired the vehicle on both occasions. No known inspection by manufacturer, police, or insurance beyond the review requested under Stellantis case #XXX. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Sep 9, 2026 · Brakes, Electrical · NY

While driving my 2019 Jeep Wrangler, the vehicle suffered a major electronic/CAN-network failure. Service Shifter, ABS and ESC warnings appeared, the wipers activated on their own, controls malfunctioned, and power-steering assistance failed while the vehicle was moving, making it extremely difficult to steer. My two young children were in the vehicle. Jeep dealer diagnostics showed widespread communication faults involving steering, ABS/brake, transmission and other control modules. The dealer replaced the power-steering assembly and RF Hub, but the problem remains. On the first drive after repair, the ABS and ESC warnings repeatedly flashed on and off at highway speed. Interior lights are also flickering. I am concerned another network failure could again disable steering assistance or compromise ABS/braking-related safety systems and cause loss of vehicle control or a crash.

Filed Sep 7, 2026 · Electrical, Engine · MI

2019 Jeep Wrangler JLU experienced intermittent CAN-C communication failure. Vehicle has repeatedly experienced simultaneous loss of multiple electronic systems. On September 7th 2026, while driving, vehicle unexpectedly lost electric power steering, windshield wipers activated without command, ABS/TPMS/ESC warning lights illuminated, and vehicle subsequently would not shift into gear after stopping at a traffic light. Hazard lights would not activate. After shutting vehicle off, vehicle would not enter ACC or restart normally. Opening driver’s door unexpectedly caused vehicle to enter ACC. Manipulating the CAN-bus wiring/STAR connector behind the glove box has historically temporarily restored normal operation. Vehicle has previously required repair to this wiring/connector, and the failure has recurred. This has been occurring for at least 3 years and since 60,000 miles. This presents a significant safety hazard because steering assistance, shifting/propulsion, and signaling were simultaneously affected while driving. It is a known Chrysler issue (FCA STAR Case S2108000146) and should be recalled as there is a CLEAR and present danger with this ongoing issue.

Filed Aug 18, 2026 · Brakes, Electrical · TN

Check engine, ABS, Service Shifter suddenly pops up and the steering was hard to turn almost had an accident

Filed Aug 12, 2026 · Brakes · FL

ABS pump and module combination is making brake calipers to not released. It’s been two times in 6 months my brakes are used up and calipers locked. Jeep knows this issue across its brand of vehicles but not called for a recall. Parts are also in back order that says lot of vehicles has issues. Confirmed with local dealership.

Filed Jul 22, 2026 · Brakes, Engine · 68,482 miles · WA

The contact owns a 2019 Jeep Wrangler. The contact stated that while driving approximately 60 MPH, the vehicle suddenly lost motive power and stalled, and the vehicle went into LIMP Mode. The check engine warning light was illuminated. The driver was able to safely move the vehicle to the side of the road. The vehicle was taken to an independent mechanic to be diagnosed, and the contact was informed that the ABS module had failed. The local dealer was contacted and advised that the replacement part was on backorder and referred the contact to the manufacturer for assistance. The vehicle was not diagnosed or repaired. The manufacturer was contacted and confirmed that the replacement part was not available. The failure mileage was approximately 68,482.

Filed Sep 9, 2025 · Acceleration, Steering · TX

Service Antilock Brake System. Service Shifter. Service 4WD. Loss communication with MPH. ABS light. Traction Control. Power Steering Failing. BRAKE. Doors Lock/Unlock. Vehicle shut down while I was driving and locked me out completely. Replaced Part No. 68321746AA-001 Vehicle was taken to four auto shops. None were able to diagnosed the issue. Mopar shop wanted to charge over $1,600 to replace ABS sensors and other items. I referred them to look at the part and was told it was not going to fix the issue. It did fix the issue. I have spent the last 2 months trying to figure out what was wrong with my vehicle and several funds later.

Filed Aug 19, 2025 · Electrical, Steering · WA

I drove over a rough patch/bump in the road. A ton of warning messages and failure lights activated on the dash. In addition to the check engine light, there were warnings for electronic stability protection, sway bar disconnect, ABS failure, power steering failure, shift lever malfunction. In addition to these malfunctions a failures, the windshield wipers turned on un-commanded and the radiator fan went into the highest possible speed, the digital engine temperature gauge failed, and both the digital and analog speedometers failed. This happened on a arterial road, losing power steering and braking at ~30mph unexpectedly was a shock, but manageable. At highway speeds it likely would have led to an accident or collision. Unfortunately, I don't have any documentation of the failure lights and systems failing, but it had happened several times prior to this occurrence, albeit only with dash warning lights, no actual system failures. After the system failures, I stopped driving the vehicle. The problem appears to be somewhat widespread and is caused by a failing CAN-C BUS. A quick google search will reveal NUMEROUS descriptions on the same dangerous issue. This thread seems to clearly expIain the root of the issue with the CAN-C BUS: [XXX] I replaced my old CAN-C BUS (p/n 68321746AA) with a new part and it appears to have resolved the issue. I have saved the old CAN-C BUS for inspection if the federal safety agency is interested. It looks exactly like the failed BUS in the linked reddit thread above. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jul 13, 2025 · Electrical · MO

I was driving my 2019 Jeep Wrangler to work and my Jeep started throwing all the things on the dash, Start/Stop lost communication, ABS System lost communication, plus several other issues and I went into limp mode. I had it towed to the dealership to find out what was wrong and they told me it was the ABS Module. That was on Wednesday June 11th, 2025. It was 3 weeks before they got the part. When they went to program the ABS Module, it froze up and they had to order another one that took a week to get in. They replaced it again and told me, it was fixed. I picked it up on Wednesday, July 8th, around 5:00 pm and on that Friday, July 11th, at noon my check engine light came on again. I’m taking it in tomorrow to see what it is this time. So far it’s just the check engine light and I’m praying it don’t quit on me getting it there. There should definately be a recall on the ABS Module. I’ll be writing another update after I see what’s going on tomorrow.

Filed Jun 25, 2025 · Brakes, Electrical · CA

While driving I received random warnings on the dashboard: airbag failure, power steering failure, shift control failure, ABS failure. After the flashing of all those warning, I lost the power steering and the ability to shift from Drive to Neutral. My inability to steer the car and loss of speed put my passengers and myself at risk and the safety of cars driving on the opposite lane at risk as I was able only to make very wide turns. I took the car to the dealer and after about two weeks the mechanic narrowed down the problem to a failure of the ABS module and told me that that part is on backorder nation wide and may take over 3 months to come. I was advised to not drive the car or to drive at my own risk.

Filed Jun 18, 2025 · Brakes, Electrical · NY

Shortly after starting the vehicle and entering roadway, the power steering failed and shortly following an error came on regarding the ABS system. I was able to pull the vehicle over safely, restart and the issue seemed resolved in that use. Next day, shortly after starting vehicle, same errors occurred, but self corrected. The day after that, shortly after starting the vehicle, all systems on the front panel cycled through several error codes, when attempting to shut the vehicle off to restart it, the vehicle would not shut off. Using the standard transmission, I was able to create a stall situation, but the vehicle's electrical would not shut off. After removing the key fab, the electrical system kept activating power systems, even turning on the windshield wipers when the control was in the off position. After 20 minutes and several attempts I was finally able to get the system to completely shut off.

Filed Jun 4, 2025 · Acceleration, Brakes · NC

bad ABS module part is not being produced in re-enegineering since 2023 jeep has all warning lights on will go into limp mode speedometer stops working braking distance is increased will not shift into gear no time line on remedy or help from jeep