2021 Jeep Wrangler vehicle speed control problems

“After the recall on the hybrid battery and getting it replaced, I have experienced loss of power, especially when merging onto a highway, I don’t have acceleration like I did before. Sometimes the vehicle will “fall on its face “when going to pass another slow vehicle I feel like this is extremely dangerous when trying to maneuver into traffic”

“While towing a utility trailer on the highway, the vehicle suddenly lost acceleration and could not maintain normal power while the driver was attempting to pass a semi-truck. During the incident, the semi-truck contacted the trailer and shredded one of the trailer tires. Three occupants were inside the vehicle. No injuries occurred, but the incident created a serious risk of a fatal collision. The vehicle has repeatedly displayed “Service Electronic Stability Control” and other warning lights, together with loss of power and transmission hesitation/slipping. The same concern has been reported to the dealership during approximately three service visits. The dealership previously replaced the air filter and attributed the warning lights to it, but the condition returned. Dated videos show the warning condition before and after that repair. The vehicle is currently back at the dealership for the recurring safety concern.”

“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 vehicle is currently in the shop getting the High voltage battery replaced for the second time due to a code showing battery voltage variation as well as getting the latest 21D recall completed. The Jeep currently has about 90,000 miles and has received all other recalls. The jeep no longer functions or performs like it did when I took ownership in February of 2022. It routinely loses power when trying to accelerate onto Highways or into traffic lanes or up hills. You can push the pedal down and there is a noticeable delay of several seconds before the vehicle starts to accelerate. The car no longer will stay in selected "Electric mode" and will instead kick the engine on at random times or take the vehicle out of "electric" and into "Hybrid". When at slow speeds (under 15MPH) in traffic the jeep lurches and slows, unable to maintain a constant speed. Also I have no way of proving that the overall power has been reduced through programming but the acceleration and advertised 375HP/470lb-ft does not seem to have the same feeling that it once did when first purchasing this vehicle. I believe there is a dangerous ongoing safety issue possibly with the…”

“After the safety recall 68C, the vehicle no longer operates as designed. In electric only mode, the gas engine engages, which is bad for the engine. This fails to give the engine time to prepare for short sudden use. When driving, the high voltage battery will lag or not produce power as it did prior. This can cause an accident (which it almost did already for myself). The acceleration lags before engaging. This vehicle performed properly prior to this software (1/1/2026) update. I don't trust or feel safe in my vehicle at this juncture. I seek the manufacturer to correct this for the safety of those who drive these vehicles.”

“While driving my 2021 Jeep Wrangler on the highway, the vehicle displayed a warning indicating a malfunction with the Electronic Throttle Control system. Immediately following the warning, the vehicle experienced a significant loss of acceleration and would not respond normally to accelerator pedal input. The vehicle subsequently began accelerating/surging without my commanding the acceleration. The unintended acceleration was significant enough that I had to apply the brakes to prevent the vehicle from striking traffic ahead of me. This created an extremely dangerous situation because the vehicle's acceleration became unpredictable, alternating between loss of accelerator response and acceleration that I did not command. The vehicle is a 2021 Jeep Wrangler, VIN [XXX]. I am reporting this because I believe the Electronic Throttle Control/powertrain malfunction and resulting unintended acceleration present a serious vehicle safety concern.”