My Yeti's rear door sensor is intermittent,  but I think it's just dirt because washing the car usually gets it working again.  It can be annoying loading stuff into the boot at a supermarket because the car thinks the door is shut yet senses movement inside, so after 30 seconds the alarm goes off.  That said nobody seems to notice so I could easily steal it!  The boot light doesn't work either so the sensor must control both the light and the alarm.

 

I've looked at parts diagrams and wiring diagrams but I can't find it shown anywhere.  Maybe that's a Thatcham thing and Skoda have to keep its location secret?  As it doesn't seem to like dirt I'm presuming it's either optical or mechanical as if it were magnetic a bit of mud probably wouldn't stop it working.

 

Could anyone tell me where the sensor is and how it works please?  If I knew where to splash a bit of water to get it going it'd make my day.

 

(It's a '60 plate pre-facelift 1.8TSi if that makes any difference.)

 

I think you will find it is the lock microswitch.

 

When I carry long loads and have to drive with the tailgate open the interior lights become a problem at night especially as I have fitted LED lights and added some LED string lights, the stock are feeble & would not cause me any problem.

 

I disable them by making the vehicle think that the tailgate is closed by closing the lock hook plate.

Thanks J.R.  I will investigate when the weather improves a bit.