2018 Jeep Compass: start-stop system problems

Filed Nov 9, 2026 · Electrical, Engine · TN

This vehicle has had multiple electrical issues since time of purchase in 2020. It has been serviced at 3 different jeep dealerships and nobody can seem to resolve the issues. when it was first purchased it would have an issue where after i started it, every warning light and message would flash, the radio would keep restarting, and the vehicle would not let me turn it off. all of this would happen simultaneously. It then sometimes would start and be normal, but the battery and auto start stop light would come on, then it would pop up with a message that says stop vehicle safely, vehicle will shut off soon. It has also given us issues where it would not start at all, no lights would come on like it was dead. More recently, after an 1.5 hour drive, after shutting it off to run in the store, it did not restart when i came back out. No lights would come on at all. We jump started it and tested the main battery, auxiliary battery, and the alternator; and all tested fine. Now neither my main headlights will come on when i start it, nor any of my dashboard lights, but the radio and all other lights still work

Filed Jul 17, 2026 · Electrical · OH

The Stop/Start function malfunctions frequently. On multiple ocassions, the computer system glitches causing the automatic parking brake to engage, the gear shift to lock, and the vehicle to become stuck. This has happened several times while the car was idling at a stop light, causing traffic safety issues each time. There is no warning light or system notification. Regular mechanics are not able to diagnose or fix these issues because of the computer system, requiring a specialist that is not always accessible. There is no notification when the auxillary battery is dead or dying, the car just won't turn on.

Filed Feb 28, 2026 · Electrical · CO

While driving I stopped at a light and an issues occurred where my stop start light appeared on dashboard. The car turned off for a minute and eventually started back up.

Filed Jan 6, 2026 · Driver assistance, Electrical · NY

When coming to a stop at a stop light or stop sign sometimes the car will stall and the automatic stop/start will turn off and put the cars emergency brake on. This is typically in the middle of traffic. I put the car in park and the car won't turn off. I have to take my foot off the brake while it is in park, turn off the car that way. Then to turn it back on, put my foot on the brake and start the car all over again. All while cars are behind me and it is taking me minutes to get my car moving. This is happening very often. It can happen in dangerous places in the road as well. This cannot be normal.

Filed Feb 25, 2025 · Engine · NJ

The Auto Start/Stop caused the starter to malfunction and burned out the battery and starter, causing the vehicle to stop in the middle of the highway and requiring it to be towed and now repaired. This has happened multiple times since we purchased the vehicle.

Filed Oct 21, 2024 · Electrical · MI

My start-stop system engaged while I was in a turning lane at a traffic light and turned my engine off. When the light turned green, I lifted my foot off the brake and the vehicle attempted to restart but stalled. My emergency parking break engaged and multiple service lights appeared on my dash including: service transmission, service engine, service traction control, service emergency breaking system, service start-stop system. I tried to restart my vehicle using the push-start button but it would not start my engine. I turned on my hazards and sat there for a moment as other drivers were forced to go around me. Minutes later I turned the vehicle off and tried to restart it again and my engine started up this time. I started to drive but noticed the power behind the gas pedal was reduced, luckily I was only minutes from work. A few hours later when I started my vehicle, only the engine light and “service stop-start system” were on. 12 hours later, when I left work, only the “service stop-start system” was on.

Filed Sep 9, 2024 · Electrical · PA

Backup Camera rarely works most of the time just a black screen. The main problem however is that the auto start/stop is stalling my Vehicle when it tries to restart. Sometimes immediately other time in let me drive a tiny bit and than stalls. i have been to the dealership over 6 times and it continues to get worse. i've only had this vehicle 2 years in November.

Filed Jul 24, 2024 · Electrical, Engine · 68,000 miles · CA

The contact owns a 2018 Jeep Compass. The contact stated while driving 30-40 MPH, the message "Stop Safely - Vehicle Will Shut Off Soon" was displayed. The contact was able to pull to the side of the road. The contact stated that upon restarting the vehicle on several occasions, the messages "Service Engine" and “Stop/Start System Unavailable - Service Stop/Start System" were displayed, and the battery warning light was illuminated. The contact stated that the failure recurred while driving, and the vehicle shut off while depressing the brake pedal to pull to the side of the roadway. Several unknown warning lights were illuminated. The contact stated that the vehicle failed to restart on several occasions and was towed to the dealer. The vehicle was taken to the dealer several times. The dealer secured the positive cable to the junction box, performed an oil change, and replaced cylinder #2 ignition coils. Additionally, an independent mechanic replaced the batteries and the spark plugs; however, the failure recurred. The vehicle was taken to the dealer, where the engine was replaced; however, the failure persisted. The vehicle was taken back to the dealer, where it was determined that both batteries needed to be replaced, and the BCM software needed to be updated. The vehicle was not repaired. The manufacturer was notified of the failure and a case was opened. The failure mileage was approximately 68,000.

Filed Jul 11, 2024 · Driver assistance, Electrical · OK

What component or system failed or malfunctioned, and is it available for inspection upon request? -the emergency brake will automatically turn on when my car stops due to the automatic stop start. Then it will not start again and it won’t let me turn the brake off. I have been stuck in the middle of traffic before because of this. Also, the automatic stop start has killed both of my batteries multiple times. In the last 2 years I have had this car, I have replaced my batteries 2 times and have had to go get them fully recharged multiple times because they just completely drain and die How was your safety or the safety of others put at risk? -I was unable to move my vehicle from the middle of the road while I was trying to get it to turn back on, this had happened several times Has the problem been reproduced or confirmed by a dealer or independent service center? -No Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? -no Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? -no there was not any warnings, there is usually a check engine light after the fact but not before, and it disappears after driving it once or twice after that happens

Filed Jun 27, 2024 · Electrical, Engine · MN

Random shiggling when driving between 20 ad 35mph specifically goin up slight inclines or hills, hardshifting randomly some times light some no noise times catches u off guard and makes metal noise , power dips only to 12v wall and cigarette plug stops charging what ever is plugged into it or restarts the item when engin starts back up at a stop sign or stop light with autostart stop activated,

Filed May 1, 2024 · Brakes, Electrical · TN

The auto stop/start feature on this vehicle continues to have issues after parts such as; alternator, batteries and cables were replaced twice!

Filed Jan 6, 2024 · Electrical, Engine · NJ

When the vehicle halts at a red light or stop sign, it activates the auto stop/start feature, causing the engine to shut off. However, when I release the brake to accelerate, the car might briefly restart and then stalls. This has happened several times.