Jump to content

Shutting Off Interior Ultrasonic sensors (not in manual)


Recommended Posts

I think I’ve accidentally come across another way to shut off the interior ultrasonic alarm sensors (useful for ferry crossings, dogs in car etc) however it may also be switching off doors and bonnet alarm as well!. If you step out the car and lock it as usual, the immobiliser activates as does the rest of the main alarm (Sigma?) I get the usual flashing immobiliser  dash light and the second small LED red light (green/amber/red). If I then walk round and open the boot via the touch pad above the number plate, boot opens, the doors remain locked but the sigma interior ultrasonic alarm deactivates (and red LED light goes off). If I then press the close button on the boot lid (but not the close and lock button) then the boot closes and everything else remains locked but the red alarm LED doesn’t come back on. The immobiliser flashing light on dash stays on as usual. So I’m guessing at the very least the ultrasonic sensors are off, but I suspect the rest of the Sigma alarm system may also be off doors, bonnet, boot. Has anybody else come across this, and does doing this mean I’ve deactivated the full main alarm (except immobiliser) or just ultrasonic sensors? May a quick and easy way to switch off alarm in certain circumstances while keeping car locked.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Create New...