Key Fob Battery replace message
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Junior Member
Joined: Nov 2017
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From: Florida
2013 E550 4MATIC
Key Fob Battery replace message
Hello guys!
I recently replace 2 CR2025 on my 2013 E550 4Matic which I bought from Target. Do I need to reset the message after replaced the battery, It's irritating me that I have to press OK every time the "Replace Key Fob Battery" message appeared.
I recently replace 2 CR2025 on my 2013 E550 4Matic which I bought from Target. Do I need to reset the message after replaced the battery, It's irritating me that I have to press OK every time the "Replace Key Fob Battery" message appeared.
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I am not aware of having to reset anything once the battery is replaced. You may have a problem not associated with the key or battery. Try using your other key with a fresh battery and leave the other key in the house.
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From: West Central Florida
2011 E550 P2 4M Sedan
The message has always gone away for me after the next startup. You may want to check the voltage on the 'new' battery that you put it. Just to be sure it's not stale.
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Joined: Nov 2017
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From: Florida
2013 E550 4MATIC
I always leave one at the house, I had tried both alone and the message had always there. I guess I have to get the battery from Benz dealer.
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Junior Member
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From: Florida
2013 E550 4MATIC
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From: West Central Florida
2011 E550 P2 4M Sedan
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From: MA
2008 E350 4Matic, 2011 E350 4matic
Get a multimeter and check. New they are anywhere from 3.25-3.31 volts. I get the message once they hit 3.06 or below. You can also buy them on Amazon or Ebay in 5 or 10 packs or more.
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From: West Central Florida
2011 E550 P2 4M Sedan
That's close to what I have seen also. One time I recall the warning came on when the battery was at 2.99v. Key was still working fine. Sometimes I get lazy and see how long they will last before the car doesn't respond; other times the message drives me crazy and I give in after a few warnings.
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From: Bay Area, CA
2010 E550
I had that problem happen to me. I replaced my key fob battery but the message didn't go away for like a week. I took the battery out of the key fob and put it back in (same battery) and the message stopped appearing. I dunno if this solution will work for you, but it worked for me.
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From: Florida
2013 E550 4MATIC
I had that problem happen to me. I replaced my key fob battery but the message didn't go away for like a week. I took the battery out of the key fob and put it back in (same battery) and the message stopped appearing. I dunno if this solution will work for you, but it worked for me.
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From: Florida
2013 E550 4MATIC
Just an update to this matter. I ended up order another new sets of battery from Amazon and no message after replaced the new batteries. This is mean that the previous new battery that I bought is losing its voltage after long period on the shelf like "Thefisch" had said in his reply.
Last edited by Leonardick; Feb 15, 2018 at 08:09 PM.
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2013 GLK350 & 2013 E350
Agree with the suggestion to measure voltage of the "new" battery and make sure it is putting out the full voltage. I tried to be smart and keep extra batteries in the house so as to be prepared, but found several that just lost its charge while storing. Once you put in a "fresh" battery the message goes away.
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2010 Mercedes E550 4matic Sport P2, Driver Assistant, Night Vision, Parktronic and Panorama Sunroof
I noticed that no name/cheap batteries gave me the same problem, until I used a quality battery
