Hello,

I have an '88 300e and the factory alarm seems to be reversed. When I lock the doors with the key, the vacuum pump locks all the doors and the alarm starts to go off. Doors lock fine if I stick my hand through the back door and press the front latch. Anyone have insight?

Thanks,
lmarty1359

Possible mechanical damage in the door switch, and/or the module is going bad.

Factory Alarm System Issues
http://www.peachparts.com/shopforum/diesel-discussion/150748-factory-alarm-system-issues.html#post1143583











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1985 300SD
1983 300D
2003 Volvo V70

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Iffy Alarm module.

Pull up the front passenger carpet and black floor board cover...remove plug from Module.

IIRC the radio theft wire unplugged will do that.

Hate to tell you this, but it's unlikely to be stolen..

I have a '92..... pulled mine years ago.

.

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