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DIY : How to Replace batteries in your keyfob with Pictures
Thread Starter
Senior Member
Joined: Aug 2007
Posts: 383
Likes: 4
From: Los Angeles, California
07 CLS63 | 06 SLK350
DIY : How to Replace batteries in your keyfob with Pictures
I've randomly seen some members post this question or inquire about how much it costs at the dealer, so I decided to take a few pictures and post it to answer any future questions once and for all.
I took pics with both type of keyfobs (pre 2007 and post 2007) to make it a one stop guide for all. enjoy.. ,
the batteries, type CR2025 were $2.60 shipped for 5 .. don't go to radioshack and pay 6$/each. Link to ebay for Maxell,
http://tinyurl.com/5reeed
New Keyfob (old is below the 1st set of pics):-
Old Keyfob:-
p.s. Yes its real easy, no need to go to a dealer...
I took pics with both type of keyfobs (pre 2007 and post 2007) to make it a one stop guide for all. enjoy.. ,
the batteries, type CR2025 were $2.60 shipped for 5 .. don't go to radioshack and pay 6$/each. Link to ebay for Maxell,
http://tinyurl.com/5reeed
New Keyfob (old is below the 1st set of pics):-
Old Keyfob:-
p.s. Yes its real easy, no need to go to a dealer...
Member
Joined: Aug 2009
Posts: 154
Likes: 0
From: South Florida
2005 S 500
I've randomly seen some members post this question or inquire about how much it costs at the dealer, so I decided to take a few pictures and post it to answer any future questions once and for all.
I took pics with both type of keyfobs (pre 2007 and post 2007) to make it a one stop guide for all. enjoy.. ,
the batteries, type CR2025 were $2.60 shipped for 5 .. don't go to radioshack and pay 6$/each. Link to ebay for Maxell,
http://tinyurl.com/5reeed
New Keyfob (old is below the 1st set of pics):-
Old Keyfob:-
p.s. Yes its real easy, no need to go to a dealer...
I took pics with both type of keyfobs (pre 2007 and post 2007) to make it a one stop guide for all. enjoy.. ,
the batteries, type CR2025 were $2.60 shipped for 5 .. don't go to radioshack and pay 6$/each. Link to ebay for Maxell,
http://tinyurl.com/5reeed
New Keyfob (old is below the 1st set of pics):-
Old Keyfob:-
p.s. Yes its real easy, no need to go to a dealer...
I Was Looking At Your Batt Replacement Post, I Have A 05 S 500 My Fob Has Only 1 Battery In It , Yours Showes 2 ???
So Do I Need 2 In My Fob ??
I JUst Looked In My Book PRE 2007 On My 05 S 500 Keylees Go Fob Has Only 1 Battery #2025
So I Think You Should Fix Your PRE 07 Saying, And Add The Keyless Go Key Fob To 1 #2025 Battery
Thanks
Harley03joe
Last edited by Harley03joe; Aug 20, 2010 at 10:46 AM.
MBWorld Fanatic!
Joined: Jun 2006
Posts: 2,359
Likes: 2
From: California
06 C55, 09 E350
This is going to be really helpful you cant imagine how difficult and time consuming trying to walk though this with someone on the phone can be. I am saving these for sure!
Thanks
Thanks
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From: South Florida
2005 S 500
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Newbie
Joined: Nov 2010
Posts: 7
Likes: 0
From: Sydney, Australia
S320 - 2000, ML270 - 2005
DIFFERENT KEY PROBLEM ?
The battery replacement details in this thread are really good however, having done that, there's another problem as one of my 2000 S320's 2 keys won't open or close the car all the time. The other's fine.
Looking at various marks on the door open and boot open sections of the key it seems it may have been trodden or or had something dropped on it so I'm wondering:-
1...Can the other internal parts of the key be removed once the valet key has been taken out to see if there's any internal damage and, if so, how?
2...Assuming it's not repairable, what is the cheapest way to get a good replacement?
Looking at various marks on the door open and boot open sections of the key it seems it may have been trodden or or had something dropped on it so I'm wondering:-
1...Can the other internal parts of the key be removed once the valet key has been taken out to see if there's any internal damage and, if so, how?
2...Assuming it's not repairable, what is the cheapest way to get a good replacement?
Member
Joined: Aug 2009
Posts: 154
Likes: 0
From: South Florida
2005 S 500
The battery replacement details in this thread are really good however, having done that, there's another problem as one of my 2000 S320's 2 keys won't open or close the car all the time. The other's fine.
Looking at various marks on the door open and boot open sections of the key it seems it may have been trodden or or had something dropped on it so I'm wondering:-
1...Can the other internal parts of the key be removed once the valet key has been taken out to see if there's any internal damage and, if so, how?
2...Assuming it's not repairable, what is the cheapest way to get a good replacement?
Looking at various marks on the door open and boot open sections of the key it seems it may have been trodden or or had something dropped on it so I'm wondering:-
1...Can the other internal parts of the key be removed once the valet key has been taken out to see if there's any internal damage and, if so, how?
2...Assuming it's not repairable, what is the cheapest way to get a good replacement?
Sorry But That Is The Only Way
Harley03joe
Member
Joined: Aug 2009
Posts: 154
Likes: 0
From: South Florida
2005 S 500
#1 I Got The Key Tru The Dealer >>> Cost Me $250.00
#2 The Key Came In, But I Have Go Start Car With The Start Button On The Gear Shift, So The Key Did Not Work To Open The Car, What I Had To Do Was Have The Dealer Take The ORG #2 Key Out Of My Key Bank For The Car , And Have The New Key Put In As The #2 Key. With There Star Computer , It Have To Be Programed.
You See My 05 S500 Is GoStart I Can Have up To Seven Key Made For My Car BUT Only Key #1 And Key #2 Will Open The Car The Other 5 Keys Will Just Start The Car.
That's Where I Was At With The Key Issue.
But So You Know , The New Key That I Got Fell In My Pool And Got Wet
And Did Not Work Again, What I Did Was o Open The Key Take The Battery Out And Buried It In A Bowl Of White Rice , And Bingo 24 Hours It Worked Again,, Just A Tip , Workes Very Well On WET Cell Phones Also
I Only Hope This All Made Sense To You, And Who Ever Reads This
Have Fun
Harley03joe
Newbie
Joined: Nov 2010
Posts: 7
Likes: 0
From: Sydney, Australia
S320 - 2000, ML270 - 2005
Thanks Again
Harley03joe I was resigned to going to the dealer for a new key until your second post about the swimming pool and white rice.
Tried the rice but it didn't work after a full day BUT did notice a very small cut all the way through door unlock section of the outside case so sprayed a very small amount of WD40 into the electric side of the case + onto the the outside of the small crack, worked it around with a blunt matchstick to get it to soak through.
RESULT - It's worked properly for 2 days & you've saved me $$$$$$.
THANKS AGAIN!
Member
Joined: Aug 2009
Posts: 154
Likes: 0
From: South Florida
2005 S 500
Harley03joe I was resigned to going to the dealer for a new key until your second post about the swimming pool and white rice.
Tried the rice but it didn't work after a full day BUT did notice a very small cut all the way through door unlock section of the outside case so sprayed a very small amount of WD40 into the electric side of the case + onto the the outside of the small crack, worked it around with a blunt matchstick to get it to soak through.
RESULT - It's worked properly for 2 days & you've saved me $$$$$$.
THANKS AGAIN!
Harley03joe
Super Member
Joined: Apr 2007
Posts: 800
Likes: 1
From: Southern California
2014 GL 450
Thank you so very much for posting this! I had to take my dog to the emergency vet this evening & my GL wouldn't lock. I had enough stress with my dog & didn't want to worry about my car. When I got home, I tried the spare remote & it worked so I figured it was the battery.
Again, thank you for the info. & step by step instructions. I knew this forum would come thru for me!
Again, thank you for the info. & step by step instructions. I knew this forum would come thru for me!
Member
Joined: Aug 2009
Posts: 154
Likes: 0
From: South Florida
2005 S 500
Thank you so very much for posting this! I had to take my dog to the emergency vet this evening & my GL wouldn't lock. I had enough stress with my dog & didn't want to worry about my car. When I got home, I tried the spare remote & it worked so I figured it was the battery.
Again, thank you for the info. & step by step instructions. I knew this forum would come thru for me!
Again, thank you for the info. & step by step instructions. I knew this forum would come thru for me!
I'm Getting To Find Out That M-Benz Is Getting Over Rated, As Being The Finest Out There, And COST THE MOST For Repairs And Buying Replacement Parts, With I Think Is This The Last Good Benz Was The 1991 SEL 420, Just My Thinking.
M Benz Might Be Made In Germany "BUT" Put Together Just Like Any Jap Car, Again Just My Thinking , I Don't Feel That There Is Anythng Specail About The Car, "JUST THE NAME" Just My Thinking.
If You Dont Beleave Me Just Go Look At The Hyundai EQUUS With 100,000 Mile Warrenty And 10 Years At 1/2 The Cost Of A Benz
Enjoy
http://www.hyundaiusa.com/vehicles/2...us/experience/
Harley03joe
Member
Joined: Aug 2009
Posts: 154
Likes: 0
From: South Florida
2005 S 500
The other's fine.
Looking at various marks on the door open and boot open sections of the key it seems it may have been trodden or or had something dropped on it so I'm wondering:-
1...Can the other internal parts of the key be removed once the valet key has been taken out to see if there's any internal damage and, if so, how?
2...Assuming it's not repairable,
Looking at various marks on the door open and boot open sections of the key it seems it may have been trodden or or had something dropped on it so I'm wondering:-
1...Can the other internal parts of the key be removed once the valet key has been taken out to see if there's any internal damage and, if so, how?
2...Assuming it's not repairable,
Harley03joe
Newbie
Joined: Jan 2011
Posts: 1
Likes: 0
2004 Gray E320, 2012 Iridium Silver GL450, 2012 Black GL450
Big Thanks!
I've been trying for a year to open the newer fob. There is not a black slider on it and everything I've previously read mentioned removing the valet key but not showing specifically what to do via illustrations.
Thanks MUCH for this post. Now my wife can't keep nagging me because she has to press the unlock several times before it actually unlocks the car.
Thanks MUCH for this post. Now my wife can't keep nagging me because she has to press the unlock several times before it actually unlocks the car.
