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Hello,

My wife car MINI 3dr Hatchback 2015 have recently have issue with her car key remote control. The battery inside the key fob goes dead after couple of days.
Have to manually open the car. Everything works fine. After replacing CR2032 in the control it works for a few days and next morning it`s flat again. I did try different makes of cell batteries but same result.

What can cause to drain the cell battery completely during the night? I have 2 car keys with same issue on both of them.

Did anyone had similar issue?

Thank you.
 

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Can't believe I could be so oblivious. A couple years ago our 2015 Mini key FOB quit working. Went thru all the diagnostics and reset procedures. Finally retired it to the desk drawer and used the back up FOB. Fast fwd to a few days ago. Second FOB quit. Changed battery, etc... no luck. So while sorting thu posts on the MINI2 forum i noticed the CR2032 3 volt battery. I checked my FOBS and they both had CR2025 batteries! I put a CR2032 in and BOTH FOBs are alive and well. Just posting to make sure no one else is using the wrong battery! (both the same size and voltage but only the 2032 works...
 
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