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      01-07-2009, 08:01 PM   #1
///M3Grunt
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Remote Keyfob Battery Low

I keep getting a warning message saying "remote battery discharged" everytime i press the start button the first time. After two trips to the dealer where at first they said there may just be a contact point problem, they finally changed both keyfob batteries but i still get the same warning. Do they have to do some resetting in the car's computer to get the message out?

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      01-07-2009, 08:57 PM   #2
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do you get this message when the keyfob is in the dash? and this happens with both remotes?
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      01-08-2009, 12:37 AM   #3
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It happens on both keyfobs when they are not inserted on the key slot. I learned from other threads that keys with Comfort Access don't charge when inserted to the slot. That's why they changed both batteries.
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      07-20-2010, 03:32 PM   #4
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I'm having the exact same issue with my 08 with Comfort Access. Both batteries changed, still get fob warning.

This is annoying.
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      07-20-2010, 07:59 PM   #5
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That shouldn't happen. Check battery voltage and make sure it's above 3V. I don't get a battery warning, but a key warning often enough to be annoying too. Found a Japanese battery that has 3.24V, the highest by far, and still get key faults. It's ridiculous how many electronic glitches these cars have. I still have almost 3 years left on warranty, but so far I'm not too convinced it's a good idea to keep my car beyond warranty. We'll see as time goes by. Good luck.
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