2021 Jeep Wrangler electrical system problems

“Vehicle shuts down and looses all power and battery controls without warning. My [XXX] daughter was driving the jeep when this happened. Was unable to get vehicle into N for over an hour. Fuses and relays inside the under hood fuse block were extremely hot. After finally getting it into N, we removed from the travel lanes of the 4 lane highway. I had jeep towed to house and waiting to hear back from dealer as to when I can have it towed in.”

“After the Jeep 68C recall fix since January 2026: • Aggressive Battery Throttling & "Bogging": The updated software heavily restricts power output (often capping electric draw around 40–50%) to keep the battery cool. This causes a sudden loss of acceleration or a "bogging" sensation. The loss of motive power is a severe safety issue that did not exist before the software update. • Violent Engine Surges: When the electric motor loses power, the gasoline engine suddenly kicks in with a noticeable delay, lurching or surging. • Unreliable Electric Mode: Vehicles frequently drop out of full-electric mode—even with high battery charge—or struggle to maintain highway speeds on slight inclines. In warmer weather, lower temperature thresholds force the gas engine on after only 5 to 10 miles. Constance on and off operation of the engine in electric mode. The engine turns on only a few seconds, then turns off. This cycle will repeat till the battery is fully depleted. Jeep has NOT acknowledged the problem or given dealership guidance how to resolve the issue with the 68C software update.”

“The contact owns a 2021 Jeep Wrangler. The contact stated that at start-up the instrument panel was blank. The vehicle was taken to a dealer where it was diagnosed, and the contact was informed that the instrument panel had failed and needed to be replaced. The vehicle was not repaired due to parts not being available. The manufacturer was notified of the failure. The contact referenced NHTSA Campaign Number: 24V652000 (ELECTRICAL SYSTEM); as a possible cause for the failure. The failure mileage was 91,000.”

“Manufacturer corporate and its dealer network are failing to provide a safe, timely remedy for a vehicle subject to high-voltage battery fire recalls (Recall 68C / NHTSA Campaign 25V-741) and a power steering fire recall (Recall 21D / NHTSA Campaign 21V-363). The vehicle has an active check engine light, a disabled hybrid propulsion system, and has now suffered a catastrophic electronic brake booster failure on a college campus, rendering the brake pedal rock-hard like compressed air and leaving the vehicle unable to stop normally. This is a direct, recurring safety failure of Diagnostic Trouble Code DTC C0580-00 (Brake Booster Motor Circuit Low), which was officially documented by a franchise dealer in June 2026. The vehicle also has an extensive history of severe manufacturing defects, including an extraordinary 72-day out-of-service period at a dealership in Miami, FL for a disintegrated rear axle bearing that destroyed the differential housing, alongside advanced structural body rust on hinges found to be unsafe. The manufacturer was formally notified of this active safety emergency and loss of vehicle utility on Sunday, September 27, via email and…”

“Since the 68C recall, my 2021 Jeep Wrangler 4xe has not behaved normally and has become increasingly unpredictable. Even with a mostly or nearly full battery, it frequently will not operate in pure electric mode at lower speeds, particularly on even slight inclines. The gas engine can suddenly start when I am expecting electric operation, sometimes accompanied by hesitation, lurching, or an abrupt change in power delivery. I have genuine safety concerns with the vehicle because I cannot reliably predict how it will respond to accelerator input. There have been instances of reduced or delayed power followed by sudden engagement, which is especially concerning when pulling into traffic, crossing an intersection, merging, or maneuvering on a hill. These problems began following the 68C recall, and the vehicle's current behavior does not feel normal, consistent, or safe.”

“My 2021 jeep wrangler Sahara 4xe has had numerous EV battery issues. I have asked recalls to be fixed. It has had its battery replaced under a federal safety recall, still refuses to charge, and caused home charger to no longer to work. It has been in the shop since 8/11/26 and they are unable to get it to charge. This is a safety hazard. Issues with the EV battery/electrical system started back in 2021 after purchasing vehicle. Most recent issue with frying my home charging unit and not charging started in July of 2026.”