hello,

I just picked up my 2009 cooper. Everything worked well initially, but 3 days into ownership both key fobs stopped unlocking/locking the doors. Using the key manually in the door works and the switch inside the car works. I tried to reactivate the keys by putting them in the ignition slot and holding the unlock button then press lock 3 times but no success. Anybody have any other ideas before I head to the dealership on Thursday? TIA.

 

when one of my non-comfort access fobs stopped locking/un the doors, dealer eventually replaced the FOB

but both going bad this way seems a bit farther out. sounds like a dealer trip I'm afeared

 

I am also having this problem. Hoping that there was a simple solution??

 

I am also having this problem as well, i have an 09 JCW and my remotes have always worked. I just left work and it worked fine, i got home and it wont work. So i went inside and got my spare and same thing, it wont work. I replaced both batteries (even though both already had fresh batteries and still nothing. I have tried to reset them and nothing still. The only thing i did while driving home was stopped at the car wash.

 

If both fobs stopped working the same time, I would be more inclined to think it was the rearview mirror - aka: receiver for central locking system.

 

Just had the same issue, turned out to be a bad cell in the battery.

 

You have comfort access....And the 2013 are notorious for bad car batteries right now, even while still on the lot.

At the onset, one would not diagnose this as a key fob battery issue if both fobs were to stop working exactly the same time...or the car battery especially if the car starts and runs.

 

You are correct!! I changed the battery in the fob first and keyless entry still did not work. The other fob worked, then it didn't. At least it's sorted out now.

 

So it was the car battery?

 

check your rearview mirror. inside it is the receiver. it usually soaks in water which gets inside through the panoramic roof and leads to useless keyfobs!