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Join Date: Mar 2011
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Alarm sounding off in the morning in 1989 3.2L

Hello all,

Original alarm system here with the a single key hole to control lock and alarm system. The symptoms:

For about a week now, after I unlock the driver's side door to get to work in the morning, the alarm inexplicably sounds off when I open the door. I then need to close door and insert key again in order to disable the alarm. Weird thing is when I unlock door from passenger's side, alarm does not down off - normal operation.

The dashboard battery light has been flickering on occasion (2-3 times a week) for a couple of weeks now.

When I step on throttle while in neutral, I do notice a slight brightening of headlights a second or two later; dims back down when I let off the throttle.

Not sure whether the alternator needs to be replaced, the battery, or possible water seepage through the driver's side window seal is some how causing a short to the alarm system.

Any ideas? TIA
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1989 Porsche Carrera 3.2 coupe
Old 02-21-2017, 10:53 AM
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