Key Battery # - MINI Cooper Forum

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post #1 of 25 (permalink) Old Jun 4th, 2004, 02:41 AM Thread Starter
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Key Battery #

What is the generic # for the battery that is in the key? No sense in paying BMW prices for a replacement battery.

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post #2 of 25 (permalink) Old Jun 4th, 2004, 02:46 AM
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Pop your key open and take a look. I don't have mine with me at the moment.
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post #3 of 25 (permalink) Old Jun 4th, 2004, 02:56 AM
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I think the battery number (and compartment opening instructions) are in the Owner's Manual.

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post #4 of 25 (permalink) Old Jan 8th, 2009, 07:16 PM
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I think that the battery in my key went dead. Mine is a 2005 (facelifted) Cooper. Does anybody know the battery number?


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post #5 of 25 (permalink) Old Jan 8th, 2009, 07:22 PM
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Quote:
Originally Posted by DeadCanDanceR View Post
I think that the battery in my key went dead. Mine is a 2005 (facelifted) Cooper. Does anybody know the battery number?

The part number is 66-12-6-912-985.
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post #6 of 25 (permalink) Old Jan 8th, 2009, 07:32 PM
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Quote:
Originally Posted by MINIAC View Post
The part number is 66-12-6-912-985.
Wow! That was fast mate! Thanks!

I wonder if there's a place where it's possible to find the regular battery number (I don't think that I want to go to the dealer and be charged extra cash for a BMW part).

Also, is the a site with instructions on how to open the key fob?


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post #7 of 25 (permalink) Old Jan 8th, 2009, 08:50 PM
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i thought the battery was charged by the car....so if ur tryin to replace ur spare one how about opening the car with the working one n then driving with the spare one....should charge it up i believe????
or i could b very wrong????

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post #8 of 25 (permalink) Old Jan 8th, 2009, 08:56 PM
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Quote:
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i thought the battery was charged by the car....so if ur tryin to replace ur spare one how about opening the car with the working one n then driving with the spare one....should charge it up i believe????
or i could b very wrong????
Nope your right there... it should be a three button key fob (as opposed to the older two button type) if so it charges when it is in the ignition

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post #9 of 25 (permalink) Old Jan 8th, 2009, 08:58 PM
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Something must be wrong with my key then, because it isn't charging at all. It just doesn't work!


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post #10 of 25 (permalink) Old Jan 8th, 2009, 09:40 PM
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I had one of mine replaced under cherished warranty
(I did'nt even know you could open them)
(facelift)

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post #11 of 25 (permalink) Old Jan 8th, 2009, 10:54 PM
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Can i change the battery on my 02 cooper s key fob??
Hope so!!
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post #12 of 25 (permalink) Old Jan 9th, 2009, 07:23 AM
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Well, I went to the MINI dealership. The guy there told me that MINI keys aren't meant to be opened, and that it could result in damage to the key!

However, the problem with my key wasn't the battery. It just needed to be programed again. The guy got into the car and closed all doors, inserted the key in the ignition switch, turned it to the first position (without turning the engine on), then he took the key out of the switch and pressed together both the closing and the opening switches in the key while directing the key up toward the rearview mirror (and also toward the rear pillars).

He tried it about 3 times, and then all of a sudden the key worked again!


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post #13 of 25 (permalink) Old Jan 9th, 2009, 09:54 AM
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Quote:
Originally Posted by DeadCanDanceR View Post
Well, I went to the MINI dealership. The guy there told me that MINI keys aren't meant to be opened, and that it could result in damage to the key!

However, the problem with my key wasn't the battery. It just needed to be programed again. The guy got into the car and closed all doors, inserted the key in the ignition switch, turned it to the first position (without turning the engine on), then he took the key out of the switch and pressed together both the closing and the opening switches in the key while directing the key up toward the rearview mirror (and also toward the rear pillars).

He tried it about 3 times, and then all of a sudden the key worked again!

You'll now find that your spare (if you have one) won't work now, in order to get it to work you have to reprogram both keys together in succession...

Glad you got it sorted

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post #14 of 25 (permalink) Old Jan 9th, 2009, 07:36 PM
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Mine went dead 2 days after getting my car, thought it was the actual central locking but i looked in the handbook and it tells you how to open the key and change the battery, so i tried it and it worked!! cost me just over a quid for a new battery and it worked straight away =)

If the key wasn't meant for opening, it wouldn't tell you how to in the handbook!!
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post #15 of 25 (permalink) Old Jan 9th, 2009, 07:48 PM
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How did you open the key up and what model and year do you have
Thanx
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