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Rick-sta · 20th October 2021, 10:01

Hi all,

I retrofitted one of the later square BMW volumetric alarm sensor units (the one that is located near the center of the headlining) but I can't get it to actually work. I followed this guide here and is definitely wired up correctly: https://www.the75andztclub.co.uk/for...d.php?t=118740

When I lock the car I can hear the alarm sensor making clicking sounds similar to rear parking sensors, but no matter how long I wait after locking the car (should start working after 20 seconds) the sensor isn't setting off the alarm when I'm moving about inside the car.

I have 2 sensor units and have tried both in case one was faulty. I have the exact same problem when I tested one on my typhoon years ago.

Does the volumetric alarm need activating on a t4? I can't see any option to activate it on toaf.

Cheers
Rick

20th October 2021, 10:01	#1
Rick-sta This is my second home MG ZT 2.0 CDTI+ in Typhoon, MG TF 135 in Typhoon & Rover 75 Connoisseur CDTI SE in Pearl Black Join Date: Oct 2012 Location: Norfolk Posts: 7,534 Thanks: 2,718 Thanked 2,827 Times in 1,462 Posts	activating volumetric alarm sensor Hi all, I retrofitted one of the later square BMW volumetric alarm sensor units (the one that is located near the center of the headlining) but I can't get it to actually work. I followed this guide here and is definitely wired up correctly: https://www.the75andztclub.co.uk/for...d.php?t=118740 When I lock the car I can hear the alarm sensor making clicking sounds similar to rear parking sensors, but no matter how long I wait after locking the car (should start working after 20 seconds) the sensor isn't setting off the alarm when I'm moving about inside the car. I have 2 sensor units and have tried both in case one was faulty. I have the exact same problem when I tested one on my typhoon years ago. Does the volumetric alarm need activating on a t4? I can't see any option to activate it on toaf. Cheers Rick __________________ How to retrofit Cruise Control on a diesel with no OEM wiring in place: Link How to retrofit heated electric memory seats with no OEM wiring in place: Link How to operate FBH and ATC via text Link How to restore cloudy projector headlights Link