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Old 10-20-2002, 11:10 PM
downsmith's Avatar
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Join Date: Jul 2001
Location: Oklahoma Sooners Alumnus
Posts: 116
126 Anti-theft alarm problem

I have a problem with my 1985 500SEL:

Since I have had the car, the alarm never worked. So today while working on another problem, I noticed that the connectors inside both front doors were disconnected.

Eureka!! I thought, connecting them back. Famous last words... Now the alarm cannot be disarmed. Also, the external lights do not flash unless the headlight switch is on one click to the right or either click to the left.

I had to disconnect the alarm control box to get it to shutup.

Is there a problem with the control box? Does the car work normally with it disconnected?
R. Downs
1985 500SEL (260,000 miles) SOLD!
1974 280 SOLD!
1994 Volvo 850 Turbo Wagon (Yuppie Ice Sled)

"I know I have a Benz and they know it too." If you start bragging about it or shoving in people's face, you then become a Wally; especially to the girls.
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Old 10-20-2002, 11:38 PM
jbaj007's Avatar
Registered User
Join Date: Jun 2001
Location: Santa Monica, CA
Posts: 2,053
The 126 CD does show a connection to the external lights from the anti-theft module, so it sounds like a bad module. My 126 ran 100K miles with the module disconnected (before I replaced it with a working module) with no obvious problems (including theft )
The Golden Rule

1984 300SD (bought new, sold it in 1988, bought it back 13 yrs. later)
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