Keyless Key wont turn in Ignition switch..Help Please
My 2000 CLK230K was running fine till yesterday, then when I shut down the engine and removed the key there was a funny creaking sound from the Console, brief but noticeable.
Today the remote was able to open the doors and trunk but when the Key was inserted into the ignition , It just cant be turned clockwise into any other position. Battery seems to be in good shape and the car was running smoothly till yesterday. Now it is stuck in the driveway and I cant get any of the other cars out of the house. Is there anything I am overlooking?
The remote batteries are new and I dont have a spare key..
When I listen carefully there are soft clicking sounds coming from the cluster area when the key is inserted and this lasts for about 10 seconds or so at about a second apart.
Does the ignition switch assembly have some kind of motor in it that may have failed? The key was not harmed or dropped recently. How do You Synchronize the key if this could be the problem. I hope I dont have to resort to having to get the car towed to a shop!
Can someone please enlighten me on this problem
TIA
N Kumar
Frustrated to say the least
As U mention there should be a clunk noise which is absent now, both when inserting and remaoving the key. The steering wheel doesnt unlock and the key is sort of dead in the inserted position. As I mentioned in my post I had not damaged the key physically in any way and it was in my front trouser pocket so I didnt sit on it or something like that. I heard a creaking noise the last time I removed the Key, so I am worried that a seven year old plastic gear somewhere may have gotten stripped...I can hear some soft clicks in the console when I first insert the key now. I think its being read but it doesnt do the next step of unlocking the wheel, releasing the shift to be able to pull it out of P, and of course no possibility of cranking or starting the engine.
Thrillkill,
No I didnt do any electrical work on the car before this happened. Maybe its the motor in the switch ... Is there a fuse for it somewhere?
Thanks
Yes the pencil operation worked and I was able to move the car. Still unable to start the car though. Someone told me the car abttery may be weak causing the problem, I will try that too. I fear if that does not work then I have no option but to have the car towed to a certified mercedes person who says that he may have to reprogram the system. I think mercedes has made this so called theft proof system to ensure that you can only go back to them...
regretting getiing a mers when my instincts told me to get a bimmer, the CLK was a good option since it was the only mercedes that looked spiirited enough to drive, Well I think I hv no choice but to have it towed and taken care of proffesiionally. I think theres only so much a DIYer can do when it comes to Electronics of this sort.
Thanks for the suggestions guys
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I think its the lock, Because when I insert the key and leave it in for a while I can feel that the key unit gets slightly warm and also pressing the buttons doesnt do anything to the locks or trunk ie.. the red LED doesnt flash, meaning to say the key recognizes that its in the lock but the lock fails to do what its supposed to. Just wondering how much the job costs over in the US, here in Malaysia I am told it will cost about USD 300 for the remote without the switchblade key and the lock (EIS I am tild is its technical name)costs USD 900, sounds pretty hefty......
Thanks again
As a last resort before changing the expensive EIS IR lock I followed the advice of one of my friends, I sprayed a sparing amount of Silicon penetrating Lubricant spray into the "key"-Hole. Initially nothing happened but the next day, I first got a noise from the ignition switch on insrtion of the key and a reciprocal one upon removal, then the next time it was inserted, amazingly I heard the welcome Clunk sound and was able to turn the Ignition and to start the car as if nothing had happened, I think it was a lube problem inside the lock and something had seized as I had parked the car on a steep incline before the ignition stopped responding to the key. Well It was a releif, but my next thought is , should i go ahead and replace the lock anyway as it may occur again and in a more inconvenient spot. I asked my mechanic whether there are any Lube spots for the lock and he said that its through the Key hole as I had done but he couldnt tell me how much or what was the best lubricant for the job. I wonder how many people have had to change their locks when this Lube maneouvre of mine may have worked........
Still its a question of reliability, maybe a new lock is better than one which requires this sort of hit or miss lubrication.
Thanks all

Still functioning well 2 days after it started working again, Mechanical clunk seems ok when Key is deployed. Any one have any experience with the Keys sold on Ebay? Sounds very tempting given the affordable price mentioned. .....The dealer Keys are about 250 US in Malaysia (where I am at)Exhorbitant/Outlandish prices for a DIL Cmos chip and a couple of IR LEDs and switches, Looks like they can be easily programmed by RS 232 based programmers/ devices. Any one have any experience in this dept?
I used to do some basic stuff on mapping curves and these are rather more complex issues.....Just a thought....
at the end of the day it turned out that the key was bad and the infrared signal was not functioning therefore no CLUNK. i did not have a spare key to test it and confirm. Stealership finally agreed to order a new one and it worked.
for replace keys go to OEMpartsdirect. they are like $100. don't mess with these other so called programmable keys...you will regret it later.
key does not turn at all now im not sure whether you have the same smart key as myself, but i dont think i can spray any lubricant into the ignition??
please help



