Non opening Merc C240

[Pat in Zimbabwe]

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We have a 2001 C240 which has developed an intermittent problem of not opening when the key/remote is pressed. We went through all the usual things with the remote i.e. batteries testing etc apparently no problem. At the beginning even if the car was opened manually the vehicle on occasions would not start and at other times it would. We replaced the SAM unit and it seemed to do the trick but after two days it would not open again. This problem seems to usually occur in the mornings. The vehicle is not garaged. Zimbabwe does not experience extremely cold conditions.

Can any one suggest what we can look at next. Many thanks

[PHAEDRUS242]

Check the version of your keys. There is a tech bulliten out on 203's with keys before version 221. The numbers are in super small print on the key itself, near the tip. If the number is under 221, they should be replaced with newer keys. I've replaced a lot of these for symptoms simlar to your own.

[neanderthal]

hey, a fellow zimbo on the board. howzit?

did you take your car to zimoco?
i apprenticed there for 2 years before coming to the states.

[lino]

Hey neanderthal, I just bought a 1970 2002 rust-free solid original car from California for a friend of mine. Thought you might enjoy that. Problem is that my friend wants to drop an S14 M3 into it. He already has the running gear. Sorry guys, not trying to hijack the thread it's just been a long time since I've seen anybody here.

Sorry PAT, I don't have any help to offer you...I'm sure more people will offer some suggestions though. When my remote control gave me a problem on an old car I had, I had to get a new one and that fixed it.