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C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe
Old 06-10-2015, 04:11 PM
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Replacing the Battery in your Key Fob with PIX

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Old 05-07-2006, 03:36 AM
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'05 c230 kompressor-Bone Stock!!! 6 Speed manual transmission
Replacing the Battery in your Key Fob with PIX

First, pull out the valet key...



My key fob has this little grey "button" that will release the insidemechanism that hold the battery in place...


I use the short end of the metal key you press the "button" and release the inner mechanism....


Then just pull apart the key....


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Old 05-07-2006, 03:45 AM
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I like the Mercedes key the most out of any car key by far. Even more than the Rolls Royce key.
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Old 05-07-2006, 04:41 AM
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Thanks for the pics. I wish more members will take pictures of the How-to's. It doesn't matter if is just as simple as replacing the battery of your key fob. Thanks again
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Old 05-07-2006, 03:59 PM
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Sure but this forum doesn't allow posting pics. You have to host them elsewhere and then link to them, unlike benzworld.org that allows this.
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Old 03-15-2007, 09:42 AM
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Nice post. The battery is a CR2032 BTW, or if you're in a bind, you can sub a CR2016 back to back with a dime.
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Old 03-15-2007, 11:23 AM
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hahah sweet.
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Old 03-15-2007, 08:34 PM
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This thread has been added to DIY section.
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Old 03-18-2007, 07:36 PM
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maybe I should do a DIY for the updated key fobs
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Old 03-18-2007, 07:40 PM
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Just replaced mine this weekend. Can open my door from pretty far away now. What is the range on our keys ?
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Old 03-18-2007, 07:46 PM
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Originally Posted by AndySays View Post
maybe I should do a DIY for the updated key fobs
how do u replace the Battery in the New Style key
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Old 03-18-2007, 07:46 PM
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300-400 feet I'm guessing
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Old 03-18-2007, 07:47 PM
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Originally Posted by WaveyKat View Post
how do u replace the Battery in the New Style key
I'll start a new thread pretty soon
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Old 03-18-2007, 07:49 PM
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Originally Posted by WaveyKat View Post
how do u replace the Battery in the New Style key
i posted about this in the newstyle key thread ages ago:

http://www4.mercedes-benz.com/e/cars...en/N21F98.html
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Old 03-18-2007, 07:59 PM
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dam, I guess I don't have to make one now
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Old 03-27-2011, 11:05 PM
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Anyone have updated pics?
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Old 03-28-2011, 01:09 AM
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W damn, I just changed mine yesterday and didn't take pictures of them..
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Old 03-28-2011, 01:11 AM
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I figured it out. Camera is out of state..
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Old 03-28-2011, 03:36 AM
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Old 03-28-2011, 03:35 PM
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FYI, you can replace the CR2025 with the CR2032... however, the 2032 is thicker, and holds more charge. I do not not recommend stuffing 2X 2032 (it's actually 2x 2025) batteries in there. I replaced ONE CR2025 with ONE CR2032, and it works fine. Did not have to reprogram anything, etc. The mechanism for holding the batteries is a little delicate so be nice to it.

=) It's a little tighter with 1x 2032, but just fine.
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Old 07-31-2011, 03:28 PM
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Thanks for the instruction manual diagrams !!
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Old 09-30-2011, 12:25 PM
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Great post, thanks!
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Old 11-28-2012, 02:50 PM
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Just figured out my newest style key while trying to use these old instructions.

On the most recent versions, you remove the mechanical key like the older versions, then put the mechanical key in the hole and lift off the rear black plastic cover, there's a little plastic tab at the rear end (where the mechanical key goes in) that you need to depress with the key, then the plastic cover will come out a bit (it's hinged at the front of the key). I'll throw some pics in my thread.

I wish there were some consistency - I almost broke my key trying to do it the old-fashioned way.
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Old 11-28-2012, 03:22 PM
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I drive a Toyota Hybrid...
Originally Posted by tommy View Post
Just figured out my newest style key while trying to use these old instructions.

On the most recent versions, you remove the mechanical key like the older versions, then put the mechanical key in the hole and lift off the rear black plastic cover, there's a little plastic tab at the rear end (where the mechanical key goes in) that you need to depress with the key, then the plastic cover will come out a bit (it's hinged at the front of the key). I'll throw some pics in my thread.

I wish there were some consistency - I almost broke my key trying to do it the old-fashioned way.
Tommy after seeing ur 8000 posts and u join on 2001 how come i never seen a single pix of ur coupe -__- i always see u and thought u are a smurf..
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Old 11-28-2012, 03:26 PM
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How come I have a thread with multiple pages, and you're too lazy to search for it?

Equally puzzling!!
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Old 11-28-2012, 03:45 PM
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Originally Posted by raymond g- View Post


Easy peezy. Now all I need to do is buy a battery
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