86 560sl, stinking alarm goes off on it's own, can't shut it off. Even drove down the road with the alarm on this morning. Tried every key position I can think (red dot key), even took to slamming the doors to get it to stop.

Where and what do I pull to take the alarm out of the system entirely?

Thanks.

JB

Had the same problem on an 88 300SEL. Nobody pays any attention to them anyway. I drove down the street with lights flashing and horn honking right past a cop car. He didn't give it a thought. The control unit is generally in the passenger foot well. Remove the carpet and big protective board. The unit says Becker on it and has two plugs. CAUTION There is a plug connection in that area that is RED. Do not mess with the RED plug unless you want to deploy your air bag just to see if it works.
Good luck

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Auto Zentral Ltd.

On the 560SL, it's behind the glove box; just unplug both plugs like I did on mine.

as ever
Paul

Thanks for clearing that up, Paul. SLs are sometimes different like sticking the fuel pump relay way back there too.

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Auto Zentral Ltd.

Would an after-market alarm(Clifford) by chance plug into the same spot originally occupied by the factory unit or is it's setup completely different?

I realize this might be a tough question, but am also SICK of this unit as I've long suspected it's responsible for a long-standing battery drain issue.

Would love to get rid of this thing, but fear I'd disable the ign. in the process.

Thanks.

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

OK, behind the glove box? What am I looking for when I get back there? Is it obvious?

Thanks.

JB

Any chance the fuel pump relay got knocked loose? As I understand it from following this thread, you had to pull the glove box to access the alarm control.

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

Sits for about an hour, twisted the key, starts right up. I hate these intermittent probs. I want my wife to be able to drive this car from time to time, can't leave her stranded.


JB

Mike,
I am impressed how you gleaned info from the thread. I wish everyboby read that carefully. It gets tiresome when someone posts a problem like: car won't start even after recharging the battery. A few posts later someone chimes in with," sounds like the battery could be dead. Did you try recharging it."

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