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Need Help ASAP - Key Will Not Turn In Ignition

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Old 03-26-2012, 08:26 PM
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Need Help ASAP - Key Will Not Turn In Ignition

OK, so I come out of the post office and my key will not turn in the ignition. The key will engage everything else and in fact when you put the key into the ignition the stereo will play etc... I called my dealer who is an hour away and they said to have the battery jumped. I had the battery jumped and it did not work. So, we replaced the battery with a brand new one and the key still will not budge in the ignition. Does anyone have a clue as to what I can do? I really don't want to have to tow it to the nearest dealership which is 85-miles a way. Thanks in advance!
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Old 03-26-2012, 08:34 PM
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Try to clean the area where the lens is on the key and the ignition switch.
How fresh is the battery in the key?
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Old 03-26-2012, 09:36 PM
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Re: Not it

Thats not it...

Originally Posted by RobertG View Post
Try to clean the area where the lens is on the key and the ignition switch.
How fresh is the battery in the key?
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Old 03-26-2012, 09:40 PM
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try to put the key in and out couple of times, you should feel a click then it will let you turn the key to start position.
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Old 03-26-2012, 09:42 PM
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Re:

Trust me I've tried this several times it doesn't budge...

Originally Posted by RobertG View Post
try to put the key in and out couple of times, you should feel a click then it will let you turn the key to start position.
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Old 03-26-2012, 10:04 PM
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When you put the key in does it click?
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Old 03-26-2012, 11:08 PM
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Re:

It feels the same as it always has except that it won't turn the ignition. It's too late for me now though...had to have the car towed 85-miles away. I didn't have anymore time to screw with it. The dealership said that the next step was to try the backup key but I have never had a backup key (bought the car used and the previous owner misplaced it). So, I guess I wait on their call tomorrow and then their bill!

Originally Posted by RobertG View Post
When you put the key in does it click?
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Old 03-27-2012, 12:10 AM
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Re: Battery

The battery in the fob has nothing to do with the key turning the ignition. The battery is for the IR for the doors and windows...

Originally Posted by RobertG View Post
Try to clean the area where the lens is on the key and the ignition switch.
How fresh is the battery in the key?
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Old 03-28-2012, 03:12 PM
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I had exactly same problem with one FOB. New batteries did not help.

I bought the car new, so backup key works. Thinking about getting a new FOB. How much does the stealer want for a new FOB?
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Old 03-28-2012, 05:52 PM
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Re: FOB

It was in fact the key FOB. The new one came in today and the car started right up. Cost through my dealer was $231 tax total. No diagnostic fee etc...


Originally Posted by nsolot View Post
I had exactly same problem with one FOB. New batteries did not help.

I bought the car new, so backup key works. Thinking about getting a new FOB. How much does the stealer want for a new FOB?
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Old 03-28-2012, 05:55 PM
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Any idea what caused the fob to go out on you?
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Old 03-28-2012, 06:05 PM
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Re: FOB

This could be coincidental but I had it in my pocket the last time I went jogging. I usually take my work car to the trail where I jog but had to drive the Benz this time. I know the history behind these FOB's so I wrapped it in a hankerchief as best I could to protect it, put it in my pocket, and took my normal run. It was the very next day that it failed. So, it could have been coincidental or could be that it bounced around enough during my run that something came loose inside. I will get the old key back and take a look at it. The bright spot is that now I can use the old FOB to unlock my door after my runs and lock the good one in the car while I am running. Expensive bright spot though...

Originally Posted by RobertG View Post
Any idea what caused the fob to go out on you?
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Old 03-28-2012, 08:49 PM
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Old 03-28-2012, 09:14 PM
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Originally Posted by RobertG View Post
Any idea what caused the fob to go out on you?
In my case, I parked at CVS, went inside for 10 minutes, and when I got back in car, the key would not turn at all.

Just checked MBUSA website and there are 4 stealers within 5 mile (15 minute drive time) of me, so I'll call all 4 and get price quotes. I'll post what I find out.
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Old 03-29-2012, 02:53 PM
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These keys just die sometimes and usually without warning. Glad to hear you fixed the problem.
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Old 03-29-2012, 03:08 PM
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I too have this happen , but at random times. key slides into the the ignition, but i got to wiggle it around to get the ignition to 'turn over". It usually just takes me moving/wiggling it around in the ignition to get it to "release" and turn over? I hink i has something more to do witht eh ignition itself and how the tumblers inside are recv the key...?
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Old 03-30-2012, 04:08 PM
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Quote for new smartkey

4 dealers:

$260
$199
$220
$258

All told me same story that key cannot be programmed at dealership, but has to be ordered from MBUSA where is it programmed before being shipped. Takes 2-3 biz days for new key to arrive.

All 4 also said I would need to show driver's license and DMV registration and the name and address need to match up. Also they prefer if I show up with the W210, which is supposed to prove ownership when combined with the documents.
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Old 03-30-2012, 10:12 PM
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Re: News Procedures

That is absolutely correct. The car must be there, you must show picture ID and the cars registration, and sign release paperwork to get the key.
This procedure was just recently initiated by MB.

My key was actually $170. But you have to pay $28 to get the key programmed, and I paid an additional $10 to have it over-nighted. So, the 2-3 day jargon is a load of crap...mine was there the next day.

I picked my new key up today...its the new chrome style. The construction of this key is not even close to the original Mercedes key. Much better construction, durability, and design. So even though the old one will not start my car it is a great backup to take with me on my jogs etc...

Originally Posted by nsolot View Post
4 dealers:

$260
$199
$220
$258

All told me same story that key cannot be programmed at dealership, but has to be ordered from MBUSA where is it programmed before being shipped. Takes 2-3 biz days for new key to arrive.

All 4 also said I would need to show driver's license and DMV registration and the name and address need to match up. Also they prefer if I show up with the W210, which is supposed to prove ownership when combined with the documents.
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Old 06-19-2012, 06:04 AM
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Originally Posted by RobertG View Post
Try to clean the area where the lens is on the key and the ignition switch.
How fresh is the battery in the key?
The battery in the key is not required for starting the car...try it, remove the battery from your key...now start the car. It uses an induction coil in the key.

The usual cause for key failure is that the coil breaks off the PCB. They can be repaired.
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Old 06-19-2012, 10:51 AM
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Originally Posted by renault12ts View Post
The battery in the key is not required for starting the car...try it, remove the battery from your key...now start the car. It uses an induction coil in the key.

The usual cause for key failure is that the coil breaks off the PCB. They can be repaired.
Good info! that makes sense since the valet key has no battery.
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Old 06-19-2012, 11:29 AM
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We have a member on a UK forum who repairs the keys for us. If he can't it costs 240...which is about $380 at todays exchange rates.
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Old 09-25-2014, 06:08 PM
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Ingnition switch won't turn

My car switch has no problem since I own it 1 year ago. I parked it last night and ignition won't turn this morning after 6 times. I saw a discussion here that cleaning the key and the ignition hole might work. I just cleaned the key and the outside part of the ignition hole with alcohol, inserted the key and tried turning it two times and the ignition turned and my car started. Another thing, I cleaned the 2 key batteries.
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Old 09-26-2014, 09:07 AM
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I'm glad it worked for you...but the batteries do not have anything to do with starting the car.
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