C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

01 C320 Key problem

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Old Jan 6, 2007 | 02:56 PM
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01 C320 Key problem

I have a 01 C320. What will happen is it will lose key code. When I shut the car off the car will not lock by remote. Stick key back in ignition and turn of for 30 seconds and turn off then car will lock. Sometime it will work after one try. Other times it may take 3 or 4 trys. Any Ideas?
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Old Jan 6, 2007 | 07:44 PM
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Have you tried new batteries?
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Old Jan 6, 2007 | 10:54 PM
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Yes 2 different Battery's and about $400 at the dealer. Of course it never does it when its at the dealer.
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Old Jan 7, 2007 | 12:15 AM
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Ford Pinto
Originally Posted by mleskovar
Have you tried new batteries?
What is the proper way to open up the fobs to replace the batteries? My wife's is doing the same thing above and she got the updated keys back in late 02 or early 03. I can't remember when exactly.
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Old Jan 7, 2007 | 12:00 PM
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Originally Posted by wizkid
What is the proper way to open up the fobs to replace the batteries? .
Hold the fob so you are looking at the end of the door key, remove door key and you'll see a release beneath where it was, use the door key to push in on the release and pull up on section that has the door key release button on it. It takes two batteries.
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Old Jan 15, 2007 | 09:54 PM
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I did all that and the problem remains.
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Old Jan 15, 2007 | 11:44 PM
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Originally Posted by Holminator
I did all that and the problem remains.
Same here. Guess no one knows what the problem is. The dealer cant figure it out either. If you hear anything please share and I will do the same.

Lonnie
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Old Jan 16, 2007 | 02:17 AM
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From: hawaii
c230 coupe
ok guys try this. stand by your car about five feet away, press and hold both buttons at the same time ( unlock and lock) while pointing the remote at the car.....by this time the carc blinkers will blink a few times after it does this go inside and start the car and let it run a little while. after this go back outside and try to arm the car and see what happens. goodluck
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Old Jan 19, 2007 | 05:55 PM
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So far so good thanks. Its been working for 2 days now.

Lonnie
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