2008 Jeep Wrangler: sudden loss of power

Filed Jun 27, 2025 · Brakes, Electrical · OH

April 22, 2025 my 2008 Jeep lost power. There was a sequence, where one warning light was followed by another, followed by a complete loss of power. I charged the battery, car started up, I drove to dealer (a 5-minute trip), and by my arrival the Jeep had again lost all power. Dealer checked the vehicle, and told me the battery and charging system were fine, but the ABS brake modulator was draining the power. They have not been able to get another modulator and the vehicle is still at the dealer (Crown Chrysler Jeep Dodge Ram Dublin, OH). Losing power precipitously presents a safety hazard.

Filed Nov 13, 2021 · Electrical, Engine · OH

This has happened on more than 1 occasion. Driving on the highway and I lose power, the Jeep slows way down, the accelerator pedal is dead, and the Electronic Throttle Control (ETC) light comes on. It does the same thing driving in town. Sometimes you can turn the vehicle off, wait a couple minutes, start it back up and it will be ok for a little bit. Sometimes it won’t. I have replaced some parts, read forums, communicated with a dealer service department and it doesn’t sound like there is a “fix” for this. This is very dangerous and someone could get seriously injured or killed.

Filed Nov 17, 2014 · Acceleration, Electrical · 90,000 miles · CA

While driving at night car went berserk lights started flashing, horn continuous sounding, wipers both front and back continue to stay on while shooting washer fluid. As tried to accelerate to get off the freeway I experience lost of power and steering. I was able to make it to the side of the freeway and turned the ignition off and on several times hoping to rest the problem, but only continue for about 30 mins and then stop.

Filed Oct 27, 2014 · Electrical · 78,000 miles · NH

First incident occurred when I put the jeep in reverse; the horn blew until it was taken out of reverse. The wipers came on and stayed on for the whole trip into work (1 hour) the windshield washer motor also ran. Engine light and airbag light came on. Since that time there are intermittent occurrences of doors locking and unlocking on their own. Wipers and washer turn on by themselves, headlights both went out in july horn wouldn't shut off, then the doors wouldn't unlock and when they did the wipers turned on. Every couple of weeks the jeep would lose power and stall. I have asked several ase certified mechanics their opinion and all say the same...tcim

Filed Aug 26, 2014 · Engine, Transmission · 111,012 miles · VA · fire

I was driving on the interstate, enroute home, and my 2008 jeep wrangler unlimited just lost power which I steered it onto the shoulder. No warning lights, nor equipment failure indicator was on my dashboard. My vehicle started smoking heavily underneath the engine compartment. I had to tow my vehicle to a jeep dealership, for further investigation on the cause. I'm awaiting for their findings on the cause.

Filed Dec 16, 2013 · Transmission · 29,500 miles · NJ

My 2008 jeep wrangler 2-door with the 6-speed manual transmission will sometimes not go into 2nd and 1st gear when downshifting. The transmission also pops out of 2nd and 4th gear. Both of these issues are unsafe because of the loss of power to the wheels. If something were to happen while trying to downshift around a turn or something of that nature, the vehicle would not be able to evade a collision. Also, the shifter clicks and feels "notchy" when shifting into 2nd gear, making it difficult.

Filed Sep 6, 2013 · Airbags, Electrical · 111,091 miles · CO

While driving approx. 55 MPH down paved road jeep suddenly began constant horn honk, wipers started going, every dash light came on(ABS, engine, airbag, etc). This continued for about 1 minute then stopped. We turned around to go back home and about 2 minutes later same thing began again. The second time, along with above symptoms, we began to lose power and were unable to accelerate to maintain speed. We pulled off to the side of the road and turned key off. Horn, and wipers kept going. Then the windshield wiper sprayers started spraying continuously. We were unable to start jeep at this time. This went on for about 3 minutes and finally stopped. Jeep then started and we were able to drive home.