Key wont unlock or lock doors or start car please help - Mercedes-Benz Forum

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post #1 of 2 (permalink) Old 06-26-2012, 04:32 PM Thread Starter
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Key wont unlock or lock doors or start car please help

Hello, i have a 1998 e320. A few days ago i noticed i couldnt get the doors unlcoked or locked with the smart key. I am able to get in and out of the car with the mechanical key that is attached to the smart key. Once i am in the car i can not turn the key in the ignition hence i canot turn the car on. What could be the problem?

This is what you need to know :

1. I do not have any spare key.
2. all electronic thing work in the car( radio, locks from the inside, seats etc)
3. i Have changed the key batteries
4. when i put the key in the ignition and then remove it, the keys red light flashes
5. i i tryed to jump start the car in case the batterty was the problem that didnt do anything. After doing that my sun roof wouldnt close anymore (maybe related)
6. fuses arent burnt

So im guessing the problem is my key. if it would be the ignition system i guess the key would at least unclock the doors?

Can someone help my or tell me what they think
thank you very much and forgive the english mistakes , my first language is french.
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post #2 of 2 (permalink) Old 06-26-2012, 09:59 PM
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if your fob doesnt unlock/lock the doors your key fob battery maybe dead? try to replace it. other than that you'll likely have to take it to the Mercedes dealer.

the '98 e320 keys are fob's right? as in they are not your standard metal key? does your dash say anything when you put the key in and try to turn?

first thing i would try to do is pull the steering wheel to the left and right when trying to turn the key. sometimes tumblers lock up.

most mercedes from the mid 90's and newer have a theft feature. There's a ring around the ignition tumbler, essentially a sensor that tells the computer the key is near the car. sometimes they come lose. try to push it in it could've come loose.
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