Beachlean

I have looked around and this is by no means a rare issue to have. My 2009 clk350 does not unlock when I pull the driver side and not the push button lock stopped too. The passenger side works fine so I figure to order a new handle and swap it out. I have seen pics and videos on this and it is simple enough but the question I have is. With a handle from a different car going on do I need to do any programming or anything? Or will the car just read a replacement handle as if it was the factory original?

Plutoe

Within the handle is a sensor,you don't program sensors,it senses and forwards the information to the central locking system.However you did check with EPC that the handle is compatible with your car!!

Beachlean

I have yet to order the new one but I will verify. Thank you for the info, I read that there is IR and RF that I know nothing about so just wanted to check on.

Rudeney

It may not bee the door handle that is defective. It would be coincidental that both the touch sensor for unlocking and the lock button both fail at the same time. This could be a wiring problem between the door handle and door controller, or it could be a bad antenna in the door. I'd pull the door panel off and check for any obvious wiring issue. You could also test the antenna by swapping it with the other door. Of course SDS could diagnosis the problem precisely.

ambit

replacement pics:
https://mbworld.org/forums/clk-class...ml#post6693390

its easy. did not require any programming.
The "unlock" button always seems to die on me. The "lock" has always worked.

You can always swap door handles to confirm. Its 'backwards' but it works.

Amir_AMG

mine ended up being a bad antenna, swapped it out from other side and it worked!

Ended up buying one on ebay for 30$

viewwing

sorry to hijack this thread, but Amir_AMG which is the antenna and sensor in the door?

So if i were to purchase a door handle part everything would be included in there?

having the same issues with the driver side... passenger side works perfectly.

remote works thou

Rudeney

The antenna is not part of the door handle- it's a separate piece mounted inside the door.

viewwing

Would you be able to show me how to get it? I don't even know what i'm looking for unfortunately...

Sorry but I'm really new to merc and all its amazing gadgets loving the rest of the things are are working.

It's going to be a fun journey to fix it up

Thank you!

Rudeney

I can, but what's your intent? To replace the antenna? That's just "throwing parts at it".
Here's the WIS docs for removing the door paneling:

http://benzbits.com/w209/DoorPanel.pdf

The antenna looks like a skinny rectangular bar stuck to the inside of the door.

Rudeney

Actually, check this thread - more info and diagnostic steps:

https://mbworld.org/forums/clk-class...open-door.html

eddieo45

So Rudeney, how does one determine whether the sensor in the door handle or the antenna is the culprit, given that the KG lock button works fine and the KG unlock doesn't (but key fob unlock does)?

Rudeney

if the KG lock button works, then the antenna is working. That leads me to believe it's the handle that is malfunctioning.

eddieo45

I found the part number - 21176011709197. Is it a bad idea to buy a used one?

Yidney

It's not a sensor in the door handle. The door handle has two garden variety micro switches. You could remove the door handle and test the wire leads just like you would test the operation of any switch - continuity tester or meter while pressing the buttons. They do corrode, but Rodney makes a good point about two switches failing at once. Mine fails so infrequently I have not bothered to investigate. Is used a bad idea? Not necessarily, but you have no way to know how long it may last. Depends on the price vs. new.

eddieo45

EDIT #2:used is $115 shipped, new about $185 + shipping. The eBay seller below says E Class one doesn't fit 209. Is he right?

EDIT: Parts.com (and other sites) seem to indicate he's right; part for an E Class is 21176011709040, while the one I found for CLK is 21176011709197. Does that make sense, or are those differences just paint codes??

http://m.ebay.com/itm/112457524663

Rudeney

MBZ part numbers are 10 digits plus four digits for the color code. So, if the first 10 are the same, it's the same part other than color.