Key fob battery replacement - Mercedes-Benz Forum
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#1 (permalink) Old 05-30-2012, 07:16 PM
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Key fob battery replacement

Hello - recently my 2011 E63 gave me a message to replace the battery in the key fob (I've got the Keyless Go feature). Replacing the battery was easy enough, but how do I reset the message on the instrument cluster? I still get the "Replace key fob battery" message every time I start the car.

Thanks,
Kent
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#2 (permalink) Old 06-03-2012, 07:24 AM
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FOB MESSAGE

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Originally Posted by kbmyers View Post
Hello - recently my 2011 E63 gave me a message to replace the battery in the key fob (I've got the Keyless Go feature). Replacing the battery was easy enough, but how do I reset the message on the instrument cluster? I still get the "Replace key fob battery" message every time I start the car.



Thanks,
Kent
Try clicking on the battery message. See if you get a "yes or no" reply
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#3 (permalink) Old 06-03-2012, 10:02 AM
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I have been quite disappointed in the longevity of the batteries in these fobs...

I also, recently had to replace mine, after only 10 months.

Our other MB's keys last years, and years and years....

The downside of a "Keyless Entry", where the fob (i would assume) is "ALWAYS ON", and constantly searching for the vehicle.
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#4 (permalink) Old 06-03-2012, 04:22 PM
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Originally Posted by G-AMG View Post
I have been quite disappointed in the longevity of the batteries in these fobs...

I also, recently had to replace mine, after only 10 months.

Our other MB's keys last years, and years and years....

The downside of a "Keyless Entry", where the fob (i would assume) is "ALWAYS ON", and constantly searching for the vehicle.
According to the instr. book fob should not be near metal when not in use. It shortens battery life.
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#5 (permalink) Old 06-03-2012, 04:54 PM
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Originally Posted by greasykid View Post
According to the instr. book fob should not be near metal when not in use. It shortens battery life.
it sits in my wife's purse...
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#6 (permalink) Old 06-05-2012, 08:43 AM
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key fob batteries

Quote:
Originally Posted by G-AMG View Post
I have been quite disappointed in the longevity of the batteries in these fobs...

I also, recently had to replace mine, after only 10 months.

Our other MB's keys last years, and years and years....

The downside of a "Keyless Entry", where the fob (i would assume) is "ALWAYS ON", and constantly searching for the vehicle.
Buy batteries on AMAZON. Bought similar batteries recently there. 10 for $6.
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#7 (permalink) Old 06-05-2012, 12:11 PM
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And always keep spare batteries in the car.


2011 GLK350 - P1, Multi-Media & AMG Pkg.
2010 E350 - P2 w/ 18" AMG wheels
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#8 (permalink) Old 06-05-2012, 03:05 PM
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Quote:
Originally Posted by G-AMG View Post
I have been quite disappointed in the longevity of the batteries in these fobs...

I also, recently had to replace mine, after only 10 months.

Our other MB's keys last years, and years and years....

The downside of a "Keyless Entry", where the fob (i would assume) is "ALWAYS ON", and constantly searching for the vehicle.
The batteries in my E last anywhere from 6 mos to a year. Its a real pain to have to run out to get batteries when the warning occurrs. My ML550 also has keyless go and I am on my 3rd year with the original batteries. The difference is the E has only one battery in the key and the ML has 2. The parts dept at the dealership has had so many complaints that they are not charging for batteries any longer for the E's.By the way the warning goes away on its own when sensing the fresh batteries.
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#9 (permalink) Old 06-07-2012, 12:21 PM
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So can somebody tell me how to replace the key fob battery on a W212?

Thanks!
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#10 (permalink) Old 06-07-2012, 12:46 PM
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