My 2015 Jeep Cherokee Limited (4WD, V6) experienced a hiccup yesterday. Got up early to do my grocery shopping, stopped a 7-Eleven for cigarettes, then drove home. No problem. Left home to pick up something at Rite Aid before going out to eat. Got out of the car, hit the button on the door to lock it, nothing happened. Tried the lock button on the fob, nothing happened. Did my shopping, came back, same issue. Tried to start the car, information screen said Fob not detected. Swell, sounds like the battery died in the fob (which I think may be a little to soon, only having had the car for 2 1/2 years. Used the emergency key in the fob to lock the door and walked home. Searched through the owner’s manual as I recall having seen a section for starting the car with a low/dead battery in the fob, but couldn’t find it (owner’s manual is 750 pages; that doesn’t include the 250 page manual for the radio). Grabbed the spare fob (I live alone and I have never used the spare fob), walked back to the car, spare fob was also tango uniform. Called AAA and just before the tow truck driver arrived I remembered the emergency starting procedure: use the fob to push the start button. Car started, could go back home. Stopped at post office (since I knew I could start the car), hit the door button to lock the car, it worked. Came out the post office, put my hand behind the driver’s side handle to unlock the car, it worked. Got up this morning to go out to breakfast, it worked, both going and coming home.
Checked the information screen, battery is OK. So the questions are: is the battery on the fob I always use dying/dead after only 2 1/2 years (my previous car’s fob worked for almost 10 years before there was an issue)? If it is, why does the spare fob act the same way? Also the tow truck driver told me that the Batteries and Bulb stores can replace the battery in the fob and even do spot soldering if necessary. Anyone know if this is true and reliable? Thank you.