E-Class (W212) 2010 - 2016: E 350, E 550

Change Key Battery

Old 04-24-2013, 02:54 PM
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Arrow Change Key Battery

It's not 1 year since I took the delivery of my car and two days ago I saw that Change Key Batteries coming on the dash
Long story short , if you see such a message don't rush to change the battery in no time , just press the one of the key fob buttons , I did this way and it worked .
So, no more Change Key Battery reminder on the dash

Funny thing I am using either keys not going steady for one that I opted and the other key has never got any message like this before lol
Attached Thumbnails Change Key Battery-dsc_0011.jpg  
Old 09-05-2013, 05:05 AM
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After doing a bit search I have decided it's OK to post in my own topic on the key fob battery state .
This is what happened , this warning message kept coming on each time I took the affected key fob with me to start the car this thing continued until I left the car not driven for 5 days .
5 days later, same key fob I pressed the ignition button to start the car and no more warning message occupying the dash , may be by some fluke or not I see no more key fob battery message which is good lol
I have been using two key fobs as well since I bought the car .
Old 09-05-2013, 05:08 AM
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Weird, when my key fob battery warning comes on, I go to Walgreens and spend $5 on a two pack of batteries and change them.

Then the warning goes away, for a long time.
Old 09-05-2013, 11:23 AM
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My warning just came on yesterday saying the battery is low...going to a CVS or something this afternoon....
Old 09-05-2013, 02:57 PM
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2020 X7 xDrive40i, 2016 X3 sDrive28i
http://www.ebay.com/itm/5-x-CR2025-DL2025-CR-DL-2025-Lithium-Button-Battery-/320533432486?pt=US_Single_Use_Batteries&hash=item4aa14808a6 Vs $5 + tx each at CVS/Radioshack/Walmart
Old 09-05-2013, 03:31 PM
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Originally Posted by thenew3
$0.99 for 5 pack shipped Vs $5 + tx each at CVS/Radioshack/Walmart
$0.99+waiting for shipping vs $5 today.....my laziness wins hands down.
Old 09-05-2013, 03:34 PM
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Originally Posted by xolinlevh
$0.99+waiting for shipping vs $5 today.....my laziness wins hands down.


To each their own. I'm too lazy to drive to a store to pickup something that I can order from home and have it delivered to my home. Especially when it costs me less than if I had to get off my butt and drive to the store.
Old 09-05-2013, 04:22 PM
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i changed my battery about 3 weeks after the warning came on, plenty of time to order a 4 pack from amazon for 2 dollars
Old 09-05-2013, 04:23 PM
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FYI, when the battery warning comes on, you have about 4-6 months before they die.
Based of my experience, not off anything official.
Old 09-06-2013, 06:03 AM
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Change Key Battery message popped back in the screen a few mins ago
OK, sooner or later I will have to replace it

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