Why does my 7 lb dog set off the security alarm when left in my locked 2003 M150 SUV & how can I prevent it?

Asked by Jan 10, 2015 at 06:20 PM about the Mercedes-Benz M-Class

Question type: General

When I lock my 2003 SUV the security alarm goes off if my 7# dog moves about in the vehicle.  Is there a motion detector in the vehicle? It doesn't seem to happen if I leave a person in the vehicle when it is locked.

3 Answers

65

Before leaving vehicle, DISABLE the alarm's motion sensor by pressing the "motion sensor disable" switch that is near the sunroof controls. It is represented by a tow truck and hook. Just push once. Leave vehicle, close door, and lock it via the remote.

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Best Answer
143,355

Probably the glass. If the pooch disturbs the windows by putting paws on .... that will trigger alarm, as if somebody is trying to use a slim-jim---the alarm is sensitive to that

143,355

Ah, ok. Good call Advance. Didn't know it had that

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