2021 Jeep Wrangler Electrical Problems

Which parts fail

• Propulsion system › Traction battery
  2
• Instrument panel › Fuel gauge
  1
• Propulsion system › Charging › Cable/cord › Accessory
  1

Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).

Mileage when the problem started

• Under 25k
  1652%
• 25k–50k
  826%
• 50k–75k
  619%
• 75k–100k
  13%
• 100k–150k
  00%
• 150k+
  00%

Owner reports

Selected complaints filed with NHTSA by 2021 Jeep Wrangler owners, lightly cleaned up (personal details are redacted by NHTSA).

The contact owned a 2021 Jeep Wrangler. The contact stated that the vehicle was designed with a right-hand steering wheel and was used as a mail carrier vehicle. The contact stated that after parking and dropping off mail, the contact returned to the vehicle and noticed that the vehicle was overheating, and the battery warning light was illuminated. Additionally, the contact noticed an abnormal popping sound and smoke coming from under the hood. The contact turned off and exited the vehicle. The contact called 911, and the Fire truck arrived 10 minutes later; however, the fire had already started under the hood. The contact stated that the vehicle burned significantly from the front-end to the front seats. Additionally, mail inside the vehicle were burned. The fire was extinguished by the fire department. There was no injury sustained. …

The contact owned a 2021 Jeep Wrangler. The contact stated that while driving on the highway at 45 MPH, the instrument panel cluster went out and the vehicle experienced a slight loss of automotive power, and the front headlights failed, the contact was then involved in a head on collision, where the front passenger side was impacted. The vehicle came to a stop upon impact. The air bags were deployed. The vehicle was towed to a junk yard. A police report was filed. The vehicle was destroyed. The contact was seated in the passenger seat while her husband was seated in the driver seat. No individuals outside of the vehicle were reported to be injured. The contact stated that her husband had sustained injuries to his knees, neck, and back, the contact has sustained injuries to their neck and shards of glass in her face. Medical treatment was needed for the injuries. …

The contact owns a 2021 Jeep Wrangler. The contact stated that while at a stop light and attempting to accelerate, the vehicle would not drive forward and the gear shifter lights began blinking. Suddenly the vehicle would lurch forward and backward crashing into both the vehicles in the front and rear and a third parked vehicle before finally the driver was able to shift into park and turn the vehicle off. During the incident, the Stability Control, ABS, and Traction Control warning lights had illuminated. The vehicle was later driven to the police station but the warning lights were still illuminated. During the incident, no injuries were reported and a police report was taken. The manufacturer was contacted and later retrieved the vehicle for evaluation. No further information was available. The local dealer was also notified of the incident. The failure mileage was 15,000.

The contact owned a 2021 Jeep Wrangler. The contact received notification of NHTSA Campaign Number: 23V787000 (Electrical System) however, the parts to repair were unavailable. The contact stated that the vehicle was charging for 2 hours in the driveway when it caught on fire. No one was injured during the fire and the vehicle was destroyed. The fire and police department was notified and the fire was extinguished. A fire department report was filed. The vehicle was towed to an unknown insurance garage. The manufacturer was notified of the failure and the vehicle was inspected by the insurance company and fire department who determined that the cause was a defect in the electrical system. The failure mileage was approximately 38,000.

The contact owns a 2021 Jeep Wrangler. The contact received notification of NHTSA Campaign Number: [redacted] (Electrical System) however, the part to do the recall repair was not yet available. The contact stated that while charging the vehicle, the message "Service Charging System" was displayed, and the vehicle stopped charging. The vehicle was taken to the local dealer, where the cause of the failure could not be determined. The vehicle was taken to a second dealer, Glenn E. Thomas Dodge Chrysler Jeep (2100 E Spring St, Signal Hill, CA 90755), where the contact was informed that the failure was occurring due to a low voltage outlet; however, the contact stated that the failure had occurred while using other outlets at other locations. The vehicle was not repaired. …

The contact owns a 2021 Jeep Wrangler. The contact stated while driving at 75 MPH, the vehicle lost motive power. The voltage meter increased excessively. The vehicle was started, and the contact drove the vehicle to a nearby parking space. The contact turned the vehicle off. The contact allowed the vehicle to remain turned off for a while. The vehicle was started, and a service battery message was illuminated. The vehicle was towed to the dealer where it was diagnosed with a failed battery pack. The contact was informed that the battery pack needed to be replaced. The vehicle was repaired. The repair was performed under the recall NHTSA Campaign Number: 24E080000 (Electrical System). The failure reoccurred. The contact stated that while the vehicle was parked and the battery was charging, the contact noticed the front fan was running extremely hard. …

On Tuesday January 6 2026, I was driving my 2021 Jeep Wrangler 4xe. I noticed smoke coming out the engine. I pulled over to the side of the road to determine the problem. Upon exiting the vehicle, I saw flames coming from the undercarriage of the engine. The fire soon engulfed the vehicle. 911 was called. Police and Fire responded. The vehicle was destroyed in the fire. I have photos and videos of the fire and aftermath, taken once I exited the vehicle. I assume the fire is the result of the recent recall on the battery components of the Jeep Wrangler 4xe. The vehicle is currently in an impound lot and would be available for inspection upon request. I have notified Jeep and my insurance of the incident, but the jeep has not as of yet, been inspected by either entity. The fire was of great risk to myself. If I hadn't pulled over when I did who knows what might have occurred. …

On [redacted], I was in Fort Lauderdale, FL for vacation with my 2 friends. I was driving for about 20-30 minutes on the road, got on the highway and noticed a rubber smell. I got off the highway. I still noticed the smell did not go away. So I opened the windows & turned off the AC. Then I saw white smoke coming from the vents and smoke coming from the right side of the hood, in front of the passenger side. I proceeded to pull over and parked the car. We exit the car & saw smoke/flames coming from the right passenger side & underneath the car. I called 911. There were no warnings or indications on my dashboard that something was wrong. I got my car serviced a month prior to this fire at a certified Jeep dealership. My car was deemed a total loss by my insurance. This was completely a safety hazard to myself, two friends and the public. …

The contract owns a 2021 Jeep Wrangler. The contact stated that the vehicle was included in NHTSA Campaign Number: 23V787000 (Electrical System), where the high voltage battery pack software and other updates were updated. The contact stated that after receiving the repair the vehicle started to run rough while driving at various speeds. The contact stated that the charging indicator was fluctuating, the RPM was fluctuating, and the check engine warning light was illuminated. The vehicle also ran rough while attempting to accelerate. The power would fail, and the vehicle would restart while driving at various speeds. The vehicle had been taken back to the dealer where it was diagnosed that the battery had failed. The dealer performed more software updates; however, the failure persisted. The dealer stated that the battery pack assembly needed to be replaced. …

The contact owns a 2021 Jeep Wrangler. The contact received notification of NHTSA Campaign Number: 23V787000 (Electrical System) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated that while driving at speeds of 50 MPH or more, the vehicle would experience the death wobble. The vehicle would also suddenly lose motive power. The contact would coast to the side of the road and attempt to restart the vehicle. The vehicle sometimes restarted in battery mode or hybrid mode. There were no warning lights illuminated. The vehicle was taken to the dealer where it was diagnosed that the front axle failed. The vehicle had been repaired. The vehicle was returned to the dealer however, there was no repair completed due to the recall remedy being unavailable. …

Related recalls

NHTSA investigations

Electrical complaints in other Wrangler years