Smartkey stopped working
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MBWorld Fanatic!
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From: So. Cal
S6 LP640 E500
Smartkey stopped working
My smartkey won't unlock or lock doors, but starting engine works. I did a search for any solutions but found nothing. I changed 2 fresh batteries and see the red led light when pressed but thats all it does.
Member
Joined: May 2012
Posts: 149
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From: Lubbock, Tx
E350
Do you have another smartkey, and if so, does it work properly? If it does, then the problem isn't on the "car" side and has to be on the remote side.
Your smartkey actually has two different sections. One section is the wireless feature that unlocks the doors, the other "talks" to your ignition system and allows the car to start. It sounds like your remote has failed in the wireless transmitter section.
Your smartkey actually has two different sections. One section is the wireless feature that unlocks the doors, the other "talks" to your ignition system and allows the car to start. It sounds like your remote has failed in the wireless transmitter section.
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From: So. Cal
S6 LP640 E500
Update: The smartkey will unlock and lock doors however only if its next to the driver door handle, I can not lock/unlock from a distance. Does anyone know where the antenna for the security system located? Reason I ask is I had my rear window retinted right before this started happening, so I suspect the window tinter may of cut the antenna or something.
Seems this person ran into my problem also but see no solution, post #18. http://www.benzworld.org/forums/w211...less-go-2.html
Seems this person ran into my problem also but see no solution, post #18. http://www.benzworld.org/forums/w211...less-go-2.html
Last edited by jagata; Jun 4, 2012 at 05:54 PM.
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From: Princeton NJ
2015 E350 4matic Sport and 2011 C300 4matic sport
Check the old reliable, push the key under your throat and click the door opener. This should help you from a distance away from the car. If this does not work, change your batteries again...
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That works on keyless entry remotes for some makes, like my old Hondas. It does not work with a SmartKey from my experience.
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From: Los Angeles
2009 SL550 Roadster Diamond White, 2008 CLK550 Coupe Obsidian Black
lol that's an old trick. it works though. helped a beautiful lady once find her car (a newer C300) in a parking lot hehe 
it doesn't work for the windows though since that works through IR not RF
hmmm, i had a problem on my remote where the trunk button wouldn't work unless i was really close and tried numerous times to hold it down. my indy shop changed the shell for me (he had a used one laying around) and it solved it. don't know if urs is the same issue.
it doesn't work for the windows though since that works through IR not RFhmmm, i had a problem on my remote where the trunk button wouldn't work unless i was really close and tried numerous times to hold it down. my indy shop changed the shell for me (he had a used one laying around) and it solved it. don't know if urs is the same issue.
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From: So. Cal
S6 LP640 E500
Need help on rear defroster grid
Ok I bought a defroster repair kit and need help from you fellow owners, can someone please compare your car's grid line to mine and confirm that indeed the breaks are the true breaks. Attached is a picture looking out from the back seat and top center of window you can see the lines that are broken or at least I think they are broken. Please someone compare their grid to mine and let me know.
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From: So. Cal
S6 LP640 E500
Thanks OTTO, I bridged the broken lines with defroster repair however it did not fix my remote unlock/lock problem. Looks like I have to go to the dealer and bend over to their prices if I want it fixed.
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Joined: May 2012
Posts: 149
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From: Lubbock, Tx
E350
Sorry it didn't fix your Smartkey issue.
There is another possibility for diagnosis. If you have an Autozone where you live, some of them have a remote tester that you can use for free. It's just a radio receiver tuned to the remote frequency that lights up if your remote is sending a signal. If you don't have an Autozone, or they don't have a tester, you can buy one for around $20.00.
here's a link for one:
http://uniquesalesonline.com/index.p...product_id=105
It might be worth the expense vs the dealership service department. If the remote is bad, you're still going to out a chunk of change for a new remote, but you won't have to pay the diagnosis fee. I would imagine the dealership diag fee will be more than $20.00.
There is another possibility for diagnosis. If you have an Autozone where you live, some of them have a remote tester that you can use for free. It's just a radio receiver tuned to the remote frequency that lights up if your remote is sending a signal. If you don't have an Autozone, or they don't have a tester, you can buy one for around $20.00.
here's a link for one:
http://uniquesalesonline.com/index.p...product_id=105
It might be worth the expense vs the dealership service department. If the remote is bad, you're still going to out a chunk of change for a new remote, but you won't have to pay the diagnosis fee. I would imagine the dealership diag fee will be more than $20.00.
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From: sousse
w211 270 cdi w211 320 cdi
same problem
hi every body !! i have the same problem with my w211 the key w'ont open the car , and won' t stat it !! i changed battery on key tested signal key is ok and emit signal ! so i depliggued battry localized in trunk and replug it and no .....
the problem is that i cant start the car to go to mercedes diagnostic !
anyone have an an idea or can help me please !!??
the problem is that i cant start the car to go to mercedes diagnostic !
anyone have an an idea or can help me please !!??
