Key Battery change
Thread Starter
MBWorld Fanatic!
Joined: Nov 2001
Posts: 4,260
Likes: 6
From: Philadelphia area
2010 ML550, 2010 E350 4M, 1966 Corvette Convt C2
Key Battery change
Just about one year to the day I took delivery of my 2010 E class I began getting the message "change key battery". Went to dealer parts dept purchased 2 batteries and the parts guy gave me a lesson of installation. Not a big deal. What puzzles me is that the manual shows 2 batteries if I am not mistaken for keyless go cars. Both of my keys had one battery each. Even though I was getting the message on one key I was a bit proactive and renewed the battery in both. Anyone else have to change these in a year??
Thread Starter
MBWorld Fanatic!
Joined: Nov 2001
Posts: 4,260
Likes: 6
From: Philadelphia area
2010 ML550, 2010 E350 4M, 1966 Corvette Convt C2
16 months is better than 12. What else is interesting is that in my 2010 ML550 with keyless go the remotes have 2 batteries and not 1 like the E. Perhaps thats why my ML has not yet called for batteries and its 4 months older than the E.
Junior Member
Joined: Dec 2009
Posts: 41
Likes: 0
2008 CLK 350 conv
Member
Joined: Sep 2010
Posts: 170
Likes: 4
From: Massachusetts
E350 4matic
Just about one year to the day I took delivery of my 2010 E class I began getting the message "change key battery". Went to dealer parts dept purchased 2 batteries and the parts guy gave me a lesson of installation. Not a big deal. What puzzles me is that the manual shows 2 batteries if I am not mistaken for keyless go cars. Both of my keys had one battery each. Even though I was getting the message on one key I was a bit proactive and renewed the battery in both. Anyone else have to change these in a year??
Trending Topics
MBWorld Fanatic!
Joined: May 2009
Posts: 1,850
Likes: 56
From: New York
2025 Range Rover, 2022 BMW M850 , 2017 MB E400 Coupe
You guys just read my mind. I just wanted to ask the same question about battery message. I see this message everytime I start the car for about 2 months already. I've got the car from November 2010, so it's about 13 months. Gotta go to the dealership to change them....thanks for info.
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Junior Member
Joined: Oct 2010
Posts: 16
Likes: 0
2010 e class
My first battery lasted 2 months which was according to my dealer because I left the key in the vehicle (in a locked garage). Now I remove it from the vehicle and am hoping for more longevity. BTW, take the valet key out, turn it 180 degrees and push it back in. One side of the keyfob pops off exposing the battery-no tools and you're good to go in under a minute.
Senior Member
Joined: Jul 2010
Posts: 299
Likes: 0
e63 2010 W212
mine just went out too. been exactly 12 months.
funny though, it still tell sme now to replace it, evne though i just did it last month.
Although reading this, the thought did occur to me, sometimes both keys happen to be in the car. my wife has 1 in her purse so it'll open the doors for her on passenger side when she's with me.
I think the alert is for her key!!
funny though, it still tell sme now to replace it, evne though i just did it last month.
Although reading this, the thought did occur to me, sometimes both keys happen to be in the car. my wife has 1 in her purse so it'll open the doors for her on passenger side when she's with me.
I think the alert is for her key!!
Senior Member
Joined: Nov 2009
Posts: 345
Likes: 0
From: NY
2010 E550 4matic, 2008 MDX, 2011 335i Vert
Same issue. Dealer was having trouble installing my remote start and turned out one issue was low battery in the key. This was after about 12 mos of ownership
