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Old 12-08-2008, 02:13 PM   #1
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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):-
Click the image to open in full size.Click the image to open in full size.Click the image to open in full size.Click the image to open in full size.Click the image to open in full size.Click the image to open in full size.Click the image to open in full size.

Old Keyfob:-
Click the image to open in full size.Click the image to open in full size.Click the image to open in full size.Click the image to open in full size.Click the image to open in full size.

p.s. Yes its real easy, no need to go to a dealer...
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Old 12-09-2008, 04:50 AM   #2
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Thanks for some truly helpful information - both the pics and the link.
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Old 12-09-2008, 07:36 AM   #3
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Good info on DIY.
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Old 08-20-2010, 10:19 AM   #4
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Post

Quote:
Originally Posted by blackcls63 View Post
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):-
Click the image to open in full size.Click the image to open in full size.Click the image to open in full size.Click the image to open in full size.Click the image to open in full size.Click the image to open in full size.Click the image to open in full size.

Old Keyfob:-
Click the image to open in full size.Click the image to open in full size.Click the image to open in full size.Click the image to open in full size.Click the image to open in full size.

p.s. Yes its real easy, no need to go to a dealer...
Black
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

Click the image to open in full size.

Click the image to open in full size.

Thanks
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Last edited by Harley03joe; 08-20-2010 at 10:46 AM.
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Old 08-20-2010, 10:41 AM   #5
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Thanks for the info. 2 1/2 yrs and it still haven't changed those batteries.
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Old 08-20-2010, 10:51 AM   #6
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Thanks for the info. 2 1/2 yrs and it still haven't changed those batteries.
Well Your The Lucky One Then
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Old 08-20-2010, 11:55 PM   #7
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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
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Old 08-21-2010, 09:10 AM   #8
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Originally Posted by JonMBZ View Post
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
Well Your Very Welcome For Thr Input That I Put On The Post

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Old 09-05-2010, 12:34 PM   #9
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Thanks

Way better info than the manual. Thanks.
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Old 09-05-2010, 03:40 PM   #10
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Way better info than the manual. Thanks.
Your Very Welcome If My Post Helped Out
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Old 09-09-2010, 12:48 PM   #11
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Thanks, now I have no reason for my wife NOT to have a key to my car...

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Old 09-09-2010, 05:40 PM   #12
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Thanks, now I have no reason for my wife NOT to have a key to my car...

Mike
Ok Your Very Welcome

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Old 09-18-2010, 11:53 AM   #13
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good stuff. I have one of each. Thanks for the illustrative pics.
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Old 02-15-2011, 08:43 PM   #14
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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?
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Old 02-16-2011, 03:30 AM   #15
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Originally Posted by benparson View Post
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?
Well There Are No Cheap Ways, You Need To Get One From The Dealer With Your Vin # And Proof Of Ownership Title
Sorry But That Is The Only Way
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Old 02-16-2011, 03:59 AM   #16
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DIFFERENT KEY PROBLEM ?

Harley03joe
I thought as much but thanks for the fast reply anyway. It clears things up.
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Old 02-16-2011, 01:21 PM   #17
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Smile

Quote:
Originally Posted by benparson View Post
Harley03joe
I thought as much but thanks for the fast reply anyway. It clears things up.
I Had To Do The Same Thing, Get A New Key Because I Only Got 1 Key With My Car.

#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
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Old 02-18-2011, 02:21 AM   #18
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Smile 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 $$$$$$.
THANKS AGAIN!
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Old 02-18-2011, 11:43 PM   #19
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Originally Posted by benparson View Post
Harley03joe
I was resigned to going to the dealer for a new key until your second post about the swimming pool and white rice.
Tried the rice but it didn't work after a full day BUT did notice a very small cut all the way through door unlock section of the outside case so sprayed a very small amount of WD40 into the electric side of the case + onto the the outside of the small crack, worked it around with a blunt matchstick to get it to soak through.
RESULT - It's worked properly for 2 days & you've saved me $$$$$$.
THANKS AGAIN!
Your Very Welcome, I Try To Help If I Can
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Old 03-05-2011, 02:53 AM   #20
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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!
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Old 03-05-2011, 01:51 PM   #21
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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!
Your "ALL" Very Welcome, See I Been There Also And Found Out The Hard Way.

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/









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00 GMC Sierra Short Bed Step Side Sold
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Old 03-14-2011, 04:39 PM   #22
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Quote:
Originally Posted by afaqanjum28 View Post
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,
Well Im Not Sure If You Can Take It Apart Sorry
Harley03joe
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86 M-B 420 SEL < SOLD
89 M-B 300 SEL < SOLD
02 M-B SL 500 Silver/Silver < SOLD
96 M-B SL500 White/Beige
05 M-B S 500 Silver/Silver Gut
03 Harley-Davidson 100th Anniversary Black/Silver
05 Harley-Davidson V Nose Trailer Black/ Chrome
00 GMC Sierra Short Bed Step Side Sold
04 Hyunadi XG 350 Great Car
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Old 02-19-2012, 02:50 AM   #23
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Thanks for the post

The post is 4 years old and the pictures and descriptions are still helping people.

Thanks

Peter
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Old 06-05-2012, 04:21 PM   #24
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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.
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Old 06-07-2012, 03:37 PM   #25
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2012 key fob

See page 79.
Remove manual key. Push back into fob in other side. Battery cover will pop off.
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Old 06-07-2012, 03:37 PM
 
 
 
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08, 2000, 2005, 2009, 500sl, battery, change, charger, davidson, dodge, fob, harley, key, mercedes, replace, replacing, sl500



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