Please Help Me. How Do You Disconnect The Factory Alarm On The 1986 420 Sel. My Key Seemed To Get Stuck In The Driver Side Door So I Started Locking & Unlocking The Car Through The Trunk. Now Every Time I Press On The Brake After Starting The Car, The Alrm Goes Off. I've Tried To Lock And Unlock The Driver Door Since It Stopped Sticking, But No Success. Please Help Me. This Alarm Is Driving Me Crazy.

Tired of the alarm, how to disconnect?

Look at what autozen had to say.

Threads a thumbnail photo in the following URL that may help:

How to disable alarm on 86 420SEL


You can also use the Search function above. Lots of write ups on this.

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Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
"Fräulein"