Replace key battery
Thread Starter
Junior Member
Joined: Oct 2010
Posts: 17
Likes: 0
E 550
Replace key battery
2011 e550
key battery replacement warning after 3 months, replaced by MB parts
key battery dead again, 3 months later
2nd key taken out and battery dead 2 months
both key batteries replaced at service, approx 1 yr after purchase
advisor insists batteries can just go dead
1 month later, again battery warning
really? my last volvo never had either battery replaced in 6 yrs, though not keyless go.
the functions of the key are being affected, slow response, etc.
i have read other posts re early warnings, but nothing like my experience
any advice, I keep my keys about 15 yards from my car.
i guess i need to speak with service manager
any help appreciated
key battery replacement warning after 3 months, replaced by MB parts
key battery dead again, 3 months later
2nd key taken out and battery dead 2 months
both key batteries replaced at service, approx 1 yr after purchase
advisor insists batteries can just go dead
1 month later, again battery warning
really? my last volvo never had either battery replaced in 6 yrs, though not keyless go.
the functions of the key are being affected, slow response, etc.
i have read other posts re early warnings, but nothing like my experience
any advice, I keep my keys about 15 yards from my car.
i guess i need to speak with service manager
any help appreciated
Super Member
Joined: Mar 2006
Posts: 771
Likes: 7
From: Waikele, Oahu, Hawaii
2011 GLK350 P1, Multi-media & AMG Pkg; 2010 E350 w/ prem 2; 2018 4Runner SR5 Prem. 4x4
wow...that's way too quick for remote batteries to die like that.
is there a chance the buttons on the remote are being inadvertantly depressed unknowingly? Or is the key within close proximity of the vehicle when parked overnight?
is there a chance the buttons on the remote are being inadvertantly depressed unknowingly? Or is the key within close proximity of the vehicle when parked overnight?
Senior Member
Joined: Nov 2009
Posts: 345
Likes: 0
From: NY
2010 E550 4matic, 2008 MDX, 2011 335i Vert
Not been an issue for me although i did replace my battery twice already in 2 years of owning the car which is still a lot. I have to say the distance range for this key is excellent (helpful with remote start)
Member
Joined: Mar 2010
Posts: 119
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From: NorCal
Current: 2019 M5 Donnington Gray, 2021 GLE53 Diamond White Met. Previous: 2010 C63, 2012 E550 Coupe
I thought this was going to be a "how do you replace the battery". I recently learned to do it and took some pictures if anyone is interested.
Super Member
Joined: Mar 2006
Posts: 771
Likes: 7
From: Waikele, Oahu, Hawaii
2011 GLK350 P1, Multi-media & AMG Pkg; 2010 E350 w/ prem 2; 2018 4Runner SR5 Prem. 4x4
Junior Member
Joined: Mar 2009
Posts: 52
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From: Columbus, OH
2008 M3; 2012 E350
MBWorld Fanatic!
Joined: Dec 2011
Posts: 2,056
Likes: 5
From: Paradise
w212 E550
i don't understand why mb doesn't do it the same as bmw. battery is charged every time you insert the key in the ignition. as for changing the battery, i think the instruction is in the manual.
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Super Member
Joined: Mar 2006
Posts: 771
Likes: 7
From: Waikele, Oahu, Hawaii
2011 GLK350 P1, Multi-media & AMG Pkg; 2010 E350 w/ prem 2; 2018 4Runner SR5 Prem. 4x4
seems like a no brainer to re-charge the battery when inserted into the ignition, but for MB, Keyless Go seems to be the way to go.
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Joined: Jul 2010
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From: on my way
2012 CLS63
I have yet to even insert my key in the ignition
I have had to replace one battery on my 550 keychain so far,
in over a year....
Junior Member
Joined: Mar 2009
Posts: 52
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From: Columbus, OH
2008 M3; 2012 E350
http://www.youtube.com/watch?v=NF3nAYV302w
Member
Joined: Mar 2010
Posts: 119
Likes: 6
From: NorCal
Current: 2019 M5 Donnington Gray, 2021 GLE53 Diamond White Met. Previous: 2010 C63, 2012 E550 Coupe
That video is much better than the pics I was going to post. If you're looking to replace the battery, just watch that video.
Note that it's only for 2010 and newer. I know that that for 2008 the key opened differently even though from the outside the key looks the same.
Note that it's only for 2010 and newer. I know that that for 2008 the key opened differently even though from the outside the key looks the same.
MBWorld Fanatic!
Joined: Dec 2011
Posts: 2,056
Likes: 5
From: Paradise
w212 E550
. Did not check the manual. Seems pretty easy to change the battery.Saw this link in another thread (courtesy: forum member robalo).
http://www.youtube.com/watch?v=NF3nAYV302w
http://www.youtube.com/watch?v=NF3nAYV302w
.
Super Member
Joined: Oct 2010
Posts: 764
Likes: 10
From: North Carolina
2010 E350, 2015 S550
2011 e550
key battery replacement warning after 3 months, replaced by MB parts
key battery dead again, 3 months later
2nd key taken out and battery dead 2 months
both key batteries replaced at service, approx 1 yr after purchase
advisor insists batteries can just go dead
1 month later, again battery warning
really? my last volvo never had either battery replaced in 6 yrs, though not keyless go.
the functions of the key are being affected, slow response, etc.
i have read other posts re early warnings, but nothing like my experience
any advice, I keep my keys about 15 yards from my car.
i guess i need to speak with service manager
any help appreciated
key battery replacement warning after 3 months, replaced by MB parts
key battery dead again, 3 months later
2nd key taken out and battery dead 2 months
both key batteries replaced at service, approx 1 yr after purchase
advisor insists batteries can just go dead
1 month later, again battery warning
really? my last volvo never had either battery replaced in 6 yrs, though not keyless go.
the functions of the key are being affected, slow response, etc.
i have read other posts re early warnings, but nothing like my experience
any advice, I keep my keys about 15 yards from my car.
i guess i need to speak with service manager
any help appreciated
I am wondering if keeping the key in close prox to the car causes it to communicate with the vehicle excessively. I have a key that has only been used a dozen times in the last 12 months and the warning says the battery should be replaced. The key stays in a box about 25 feet from the car all the time. I have keyless go so maybe there is a whole RF identification thing going on runnin down the battery.
MBWorld Fanatic!
Joined: Jul 2002
Posts: 2,677
Likes: 3
From: California
i535
Same for me. Battery warning every 6 months. I never changed battery in my previous W211 (same key less go). Something wrong with the car electronics. I do not believe you can charge battery inserting key in ignition, since battery is not chargeable. Last time I had to drive with a key in ignition because can't start remotely.
Let us know if you find solution, really mad about this.
Let us know if you find solution, really mad about this.
Super Member
Joined: Dec 2010
Posts: 908
Likes: 19
From: New Jersey
2016 Audi S8 Plus/ 2011 Mercedes e550 4Matic//Gone:1985 500SEL/2000 e320 4Matic/ 2001 e55 Kleeman
I have the same issue. My battery went after about 7-8 months. I do suspect that it is because it must be communicating with the car as long as you are in the car. I am using my second key, haven't gotten around to go to the dealership to replace the battery. I would assume that key battery life is related to how much you drive the car. I think I had around 9,000 miles on the car when I got the warning. Regards. Ned.
Senior Member
Joined: Dec 2007
Posts: 422
Likes: 1
From: Lafayette, LA
2011 E550
The exact thing happened to me (twice).
I park my car in the garage and leave my key in there a lot too, so i'm guessing it's constantly communicating with the car.
So now, I leave my key out and away. So far, no more issues..
I park my car in the garage and leave my key in there a lot too, so i'm guessing it's constantly communicating with the car.
So now, I leave my key out and away. So far, no more issues..
Senior Member
Joined: Mar 2005
Posts: 437
Likes: 4
Lexus LS 400, 2008 BMW 528i, 2014 e250 BlueTec
I believer wireless remote will drain more power because it is communicating with the car whenever it is running. Result is that you have to change battery in less than 1 year in general.
