Changing the Batteries on your Mercedes Smart Key 

My god can we send this man like 50 bucks for this video!!! I wasted so much time watching key fob videos that NEVER said there were different fobs and different ways to replace batteries. You sir just saved me from ripping my fob open out of pure rage. Thank you for this knowledge

This vid points out there is a difference between older MBZ and newer MBZ key fobs. From 2010 and newer, the fob back cover pops off; and 2007 to 2009, the fob end slides out. For each of them, there is a latch that prevents the key fob from coming apart during normal use (two different types of latch). For the newer fob, the latch is up and down, and prevents the back cover to pop up. For the older fob, the latch is towards the side (opposite side where the key ring hole), and prevents the fob end to slide out. You remove the mechanical key, shine a flash light into the slit, and you can see the latch. Use a small flat head screw driver to push on the latch. For the newer fob, you push the latch and work to pop up the back cover. For the older fob, you push the latch and work to slide out the end. (For the older key fob, there is a thin small ring that pops up, and you can attach your key ring to it, to give you the leverage to pull the fob end out, which pushing on the latch).

Hello, new best friend that just saved me from breaking another $400 key

Thank you, you spared me quite a lot of effort!

you're the best

Thanks for taking the time to help people who encountered the same issues as you. You helped me brother. Kudos.

If the Normandy coastal defenses were built as securely as these latch mechanisms, we'd all be speaking German right now! This is ridiculous. In any case, thanks for pointing out that similar keys have different latches.

The 2016 MBenz key it´s so easy, but the 2008 MBenz Key it´s very very difficult !!!! I have both !!!!

This was point on. I have a 2010 S class and the top pulled off instead of the back. Found (2) 2025 batteries

Thank you for the expiation! Why they have to change it? Everything I touch in my Mercedes is over engendered. They think they are very smart 🧐

I'm still very frustrated - how do you release latch ?????? Please tell us

Many thanks ... I have a 2007 W203, run out model, it has the slide out battery like your 2008

Instructions for how to gain access to the internal batteries 2008 style key here. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-3kxohIipeAM.html

Okay. Figured it out. Hook the handle end of the key alway to the right in the slot and pull it to the left. This unlocks from the side but you have to hold it as you pulled the guts out of the key fob

If you can’t tell the difference the release is on the back of the key fob that has to be pulled & the other metal key release is on the bottom

Thank you Sir, I already had the notification of low battery come up in my Merc

How to release that latch is the main headache. If you do another video, please show how you did this.

Thank you for your helpful video ☆☆☆☆☆

Thank you Paul, for the demonstration.

Do anyone have power leaking problems with 2008 Class too? The thing always causes me much trouble of dead battery.....

I almost break the back cover trying to change my battery.. thank e

Thanks for taking the time to make this helpful video

I am trying to figure out what makes the keys different those are the 2 styles I think keyless go is the difference I have a 04 E55 and a 09 GL450 that have keyless go and the round panic button and those have the the style that the insert slides out. My 07 E350 and my 12 C300 have the triangle panic button, the battery cover and they are not equipped with keyless go. This is a good video because it shows both.

Thank you for sharing. I was just a frustrated like you sir. Your video showing the right way for my S class model. Thank you!

Didn't help on the 2008 . Still struggling to find the release latch to let the back of the key fob come out. a close-up of the release latch would have helped

Do you have a video to show how to fix the remote control if you put a brand new battery in there and a doors are still not unlocking

Thanks

Do the keys need recoding after a battery change? I'm guessing not. I have a 2010 w164 ml Them you so much

Thanks for the great video Paul.

On my 2006, ML, it is different still. The latch that you need to release is on the side of the FOB. So to open you have to slide not push. The key usage is different too. Don’t use the shaft of the key but instead use the shorter piece like a crowbar.

Thank you I've just killed 1

Why didn’t you explain how to get it out MR everything? Omg! People!

yes. I have the oddball fob. hank you

Great video Paul. Helped me out!

Thanks! Made it super easy!!

Thank you for this. Most of the other youtube videos do not mention the 2008 key sliding mechanism. Excellent.

Thanks for the help. Mayor! USMC, 1986-90.

You good I just learn how to do it my self I just got a cls2008

Makes sense in theory but would be nice to see you physically do it.

Thank you, you totally helped me!!

Thank you so much!!!! Today is a holiday and can't get anyone on phone!. You saved me worrying on a trip tomorrow. I have a 2016 glc and it worked great.

good video. thanks for your share paul

That was so helpful. I have a 2005, 2007 and 2014 Mercedes and all 3 keys are different! Almost broke my 2007 one thinking it came apart like 2014. Thank you!!!

The only video that is useful for 2007 cl600 model. We kept trying to open instead of slide watching wrong videos and were going crazy. Many thanks!

OK, but you did not show the rest of the procedure on the 2008 key. I'm STILL frustrated

Thank you very much !!! I have both too, and I was suffering !!!!

Thank Mr. your vid was the most useful

My 2007 SLK comes apart like the 2011

TAnk VR MaTaCh

Paul, you are my god! thx for this video!

THANKS!!!!!!!!!!!!!!! I scratched the hell out of my fob just like you trying to follow other videos. This is the only video that mentioned the correct method for getting access to the batteries. Thank you for saving my sanity.

Without reading through 293 comments, do we know what battery it takes?

Your video just saved me after two hours of being frustrated beyond belief. Every video before this said my key was the pop off one, and I couldn’t not figure it out. Damn near broke my key. Thank you so much for taking the time to show the difference. I appreciate it so much.

Thank you Paul your guide was very clear we never would have done it alone

Good video. I just got a 1999 C280

Thank you Paul 💯

Thank you Paul!

THANK you Sir!! Watching other videos I actually broke the black cover try to get it off... On my spare key I slide it like you showed... So easy when you know how. Thank you.

That's pretty strange. I have a 2011 SL550 and my key is like the 2008 that you show. So I'm trying to find a way to get the part to pull out as you showed. I'm reluctant to force it. I'll see if another video deals more closely with the 2008 key fob.

Thanks Paul. I got the 2008 key. I try to release the catch as you mentioned, still could not figure out how :(

This video really helped me!!!! THANK YOU!!!!!!

Thank you 🙏

To get the battery out I used a knife.

Life saver lol

I almost literally cursed out the locksmith. I have two different keys as well I was getting ready to get the big screwdriver…….lol

Thank you! That really helped. No one else bothered to explain that it's different on 2008s.

My positive was on the other side. Don't know how that happened so thank you for showing me how to take the battery out!

Thanks Paul

Great Superb Job. Thank you

Nice thanks

What type/size battery does it take?

Paul Oakes, you rock! Thanks for the clear instructions. You are now my friend. 😅

Thanks so much for help us link me

Thank you Paul! You have eliminated a source of frustration for me!

Mr. Oaks, your suggestion is well appreciated ! Good job, Paul ! 😊

Mine is broken but still thanks😁

Thank You!!!

Wow that made it do easy. Thanks

The older model has the round red panic button witch takes 2 batteries so u pull it out from the latch...And the triangle red button takes 1 battery witch needs the black cover pulled back

THANK YOU SO MUCH FOR THIS VIDEO. I have a 2008 ML 350 and was just about to the point where I was going to use a sledge hammer to get that thing open. Watched your vid, and it was a breeze.

I have both, thank you sir. I needed the 2011 one this time

Very very helpful!!! I have two separate keys and I was trying to release the latch on both and was becoming very fraustrated!! Many Thanks!

Your video was more informative than all the others!

The 08 is better and durable.

My 2006 SLK 280 also has the pull out kind. It requires 2 2025 batteries.

Thanks

Thx.

Thanks, you saved me time

thank you for your video Sir

The Battery is a CR2025 in mine for 2014 SL

Thanks

Thank you!! This is the only video that explained how to do this with my fob!!

Wow, your video was just as frustrating as the rest. You never said how to pop the back off!!

Thank you for sharing this video.

Thanks for the tip I was able to use it for gl 450 2008 😁!

Thanks, this video helped me to open up my Mercedes key fob for 2005 Kompressor 2 door coupe battery used was #2025. Cheers👍 3:24

Thanks Paul. I had trouble with the latch.

You dont go through the process of showing how to release the latch? that was NOT helpful.

when you took off the battery, your key don't lose the codification, right?

Tells e nothing useful. I need to know how to change the battery, not the difference between 2008 and 2012 models. Just wasted 3 minutes of my life