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      12-06-2012, 11:42 PM   #1
Nice78
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Key fob

I have a 2008 E90, would I need to insert the key fob all of the time? I read somewhere that the key doesn't have a rechargeable battery and some people had said there's a rechargeable one in there.

Please provide guidance.....
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      12-07-2012, 12:05 AM   #2
GSDOUBLEU
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If you have the comfort access feature then you don't have to stick the key into the slot. If you don't have the feature then you do. As far as the battery goes, it is a lithium battery I believe. They die in average of about 5 years I say. The comfort access keys you can replace, I believe it's a cr2032 battery for the e90 fobs. Not comfort access if your battery dies then you have to get a new key.
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      12-07-2012, 01:29 AM   #3
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Yea, I wish I had comfort access as well Its a handy option to have.
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      12-07-2012, 03:14 AM   #4
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+1 GSDOUBLEU .

What to do to see what your sitch is: Check your key fob. If there is a battery hatch on the back, it is a "Comfort Access" or "Convenient Access" key fob. If not, stop here, you don't have the feature.

If it IS a CA fob, then it must be coded to your car. I changed the battery on my two fobs (yes it is CR2032 - about the size of a quarter) and one of mine worked for CA, the other did not.

If it IS a CA fob and does NOT work with a fresh battery, it must be coded to your car by your dealership, and will likely cost you 0.5 hours at your local shop rate. The car can apparently only handle TWO fob codes. If one of the fobs has ever been replaced, the new fob needs to be coded overtop of the old one.
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      12-08-2012, 08:05 AM   #5
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Quote:
Originally Posted by GSDOUBLEU
If you have the comfort access feature then you don't have to stick the key into the slot. If you don't have the feature then you do. As far as the battery goes, it is a lithium battery I believe. They die in average of about 5 years I say. The comfort access keys you can replace, I believe it's a cr2032 battery for the e90 fobs. Not comfort access if your battery dies then you have to get a new key.
Thanks.
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