E-Class Coupe (C207) & Cabrio (A207) 2010-: E250CDI Coupe, E350 Coupe, E350CDI Coupe, E500 Coupe, E550 Coupe [Coupes & Cabriolets]

DIY: Key Battery Replacement

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Old 07-28-2013, 07:59 PM
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2010 E550
DIY: Key Battery Replacement

I was driving today and noticed that my dash informed me to replace the battery in my key.

Materials: New battery (CR2025 3v) and small blade.

Here are the directions:

Step 1. Pull the grey lever to the right and pull out the L shaped key.



Step 2.



Step 3. Turn the key to the back side and insert the Key into the left side.
This will press out the back key cover.



Step 4. Take a blade and pull out the battery.



Step 5. Install the new battery and replace the cover. Then reinsert the key.

Last edited by lee16; 07-28-2013 at 08:01 PM.
Old 08-05-2013, 06:40 PM
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2010 MB 350i Coupe P2 WD
excellent, especially step #3
Old 08-05-2013, 08:16 PM
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'12 E550C, Sierra Denali
Thanks
Old 08-05-2013, 10:32 PM
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and ya dont pay attention on 100 which saw your post and didnt replay
this forum is full of people which even battery replacement will give to dealer
Old 09-28-2013, 09:41 PM
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Thanks for this!!!!!!
Old 10-01-2013, 01:37 PM
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Those batteries don't last long. I've already replaced mine twice!
Old 10-12-2013, 03:17 PM
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