Quote:
Originally Posted by Igreaves  HI
They're actually ultrasonic doppler sensors (1 transmit, 1 receive).
I have them in my car! They're part of the Mercedes OEM Alarm system.
They're working exactly as intended, from your description. They are however disabled when the top is down. (they won't work reliably in open air!).
With the hood up, or hardtop on, the alarm should sound when triggered by these units. (shown by the LED coming on!)
just my 2 cents worth!
IAN |
Thanks for that explanation Ian, perhaps they were only fitted to later models or were an option because I can't find them on my car.
My Toad alarm must have something similar because if walk near the car with the alarm set, it lets out a series of audible bleeps.