1988 BMW 535 Horn by the battery

gisloc · Posted at Mon Jul 07, 2008 10:03 am

Electrical problem
1988 BMW 535 6 cyl Two Wheel Drive Automatic 236*** miles
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I have a horn behind my battery (in yellow circle in the picture) when you press the horn on the steering wheel it does not go off and i didnt want to go ripping things apart to figure out where it was hooked up to..Is it for an alarm i didnt know i had?

Dr. Hagerty · Posted at Mon Jul 07, 2008 2:10 pm

The On Board Computer has an alarm feature and is connected to the horn that sits behind the battery.

gisloc · Posted at Tue Jul 08, 2008 7:08 pm

So do i need to by a remote for it to work or is it not that kind of alarm. If not when would that horn ever go off

Dr. Hagerty · Posted at Tue Jul 08, 2008 7:47 pm

Its not that kind of alarm. Unless you set it through the OBC, it wont go off and of all the E-28s I have had, I never used it. If you think about it, when was the last time you actually paid attention to an alarm in someones car.