Jeep Compass Key Fob Failure Linked to Low Battery

The symptoms match my experience with a 2013 Jeep Grand Cherokee diesel. When my key fob started acting erratically, the dashboard showed a low battery warning too. Initially thought it was just the fob battery, but replacing it only fixed things temporarily. The real issue turned out to be a faulty key fob circuit board that was draining the battery faster than normal. The key battery replacement alone wasnt enough because moisture had damaged the internal components. The dealership had to reprogram a new key fob completely. Important signs to watch for: Inconsistent door locking/unlocking, Multiple presses needed for response, Dashboard battery warnings, Reduced working distance This is a common issue with these models after 150000km. While not a major mechanical problem, it requires proper diagnosis since a simple battery replacement might not resolve the underlying circuit issue. The repair involves programming, so regular mechanics may have limited success. Would recommend having both the key fob battery and the complete fob system checked by someone who specializes in automotive electronics and programming.

Thanks for sharing your experience. I had the exact same problem with my Compass last year. The electronic key system was failing and changing the dead key battery didnt fix it. The circuit board was corroded and needed full replacement. My car also showed those low voltage warnings, and the doors would only respond after pressing the fob multiple times. The auto key programming and new fob ended up fixing it completely. Do you remember how much the repair cost in total? Have you had any issues with the new key fob since the replacement?

Had my key battery replaced just last month, total cost was 37 Euro for the auto key service. Since seeing the electronic specialist, the low battery warning completely disappeared and the key fob works perfectly. No more issues with door locking or unlocking. The car key programming was included in that price, which was a relief since some places charge extra for reprogramming. The dead key battery was indeed the only problem in my case, unlike your situation with the corroded circuit board. Good to know these issues can range from simple battery replacement to more complex circuit problems. My fob now works smoothly from a good distance, and I havent seen any battery warnings on the dashboard since the fix.

Took my Compass to an electronics specialist last week. The total repair came to 180 Euro including a new circuit board, fob battery and programming. More expensive than expected but worth it for a proper fix. The technician showed me the corrosion damage on the old circuit board. Apparently moisture had gotten in through a tiny crack in the key housing. They installed a better sealed replacement unit that should prevent future water damage. After a week of use, all systems are working perfectly. Doors respond first time, no more low battery warnings, and the range is back to normal. Much better than wasting time with temporary fixes that dont solve the root problem. Definitely recommend going straight to an electronics specialist rather than a general mechanic for these key fob issues. They knew exactly what to look for and fixed it right the first time.