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Boot-lid sensor not working.
Posted: Fri Jan 22, 2010 4:13 pm
by the_mini_mole
Hey guys and gals,
The boot lid sensor on my GTi has stopped working, meaning that I don't get the warning light when its open, and when I open it the light doesn't come on, and of course the central locking doesn't recognise the fact that a door has been opened and the car re-locks itself. Is this just a loose connection somewhere? It was working sort of periodically, but now it seems to have stopped all together. Where should I start looking (apart from in the boot, lol)
Thanks
TMM
Re: Boot-lid sensor not working.
Posted: Fri Jan 22, 2010 4:19 pm
by BobbyG
I have the same issue, I bet your boot light isn't working either???
Apparently the problem lies with the boot lock microswitch. I have the pleasure of locating this over the weekend, I'm guessing it's located around the boot lock somewhere, so taking the inside boot trim off is probably the way to get to it.
Can someone confirm this?
Re: Boot-lid sensor not working.
Posted: Fri Jan 22, 2010 4:39 pm
by Bepe
the boot light is seperate from that, i havent got the microswtich in mine and my boot light works fine
Re: Boot-lid sensor not working.
Posted: Fri Jan 22, 2010 7:51 pm
by the_mini_mole
No, no light in the boot or anything. Please let me know how you get on cos then I can give it a go too, lol.
Re: Boot-lid sensor not working.
Posted: Fri Jan 22, 2010 10:24 pm
by alexperkins
Bepe wrote:the boot light is seperate from that, i havent got the microswtich in mine and my boot light works fine
its in the same circuitry- its a three wire switch. The microswitch is on two wires, the luggage is on two wires (live and a ground, thought the ground is shared on both)
Re: Boot-lid sensor not working.
Posted: Thu Jan 28, 2010 11:12 am
by BobbyG
the_mini_mole wrote:No, no light in the boot or anything. Please let me know how you get on cos then I can give it a go too, lol.
I've had a look at the boot locking mechanism behind the boot-lid trim and can't work out which bit needs replacing. To be fair the only way I would know is if the offending part had "boot lock microswitch" written on it!!!
Can anyone be more specific as to it's location, or even better provide a photo??!!!!
Cheers,
Re: Boot-lid sensor not working.
Posted: Thu Jan 28, 2010 8:16 pm
by alexperkins
open the boot
remove the lock latch mehanism from the bootlid (two allen key/spline bolts depending on the build date)
the microswitch is what the wiring plug is connected to

Re: Boot-lid sensor not working.
Posted: Fri Jan 29, 2010 9:41 am
by BobbyG
Nice one,
I'll have another look next time I've got a minute!
Re: Boot-lid sensor not working.
Posted: Fri Jan 29, 2010 5:48 pm
by dantheram
is it the microswitch if the boot light does not work (bulb changed and connectors under seats checked)?
Re: Boot-lid sensor not working.
Posted: Fri Jan 29, 2010 7:56 pm
by alexperkins
Yes. Either that or the fuse.
Re: Boot-lid sensor not working.
Posted: Fri Jan 29, 2010 8:44 pm
by BobbyG
I think I'm right in thinking that the fuse for the boot light is shared with that of the interior light, therefore if your interior light works, the problem lies with the microswitch.
I just need some light/time to get it sorted.....along with the earth for my electric window switch, and any other problems that my car throws at me between now and then!

Re: Boot-lid sensor not working.
Posted: Fri Feb 12, 2010 9:22 am
by BobbyG
Is the boot lock microswitch the same as the door lock microswitch as per the link?
http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... K:MEWAX:IT
Cheers
Re: Boot-lid sensor not working.
Posted: Mon Feb 15, 2010 12:46 pm
by mwarner87
Im having this problemo too!
also, the boot light hasnt been working much either, for about 3 months, but last ngiht it worked for the first time. The bulb is fine, as ive replaced it. Could this be linked?
Is switching the sensor easy too?
Thanks!
Re: Boot-lid sensor not working.
Posted: Sat Feb 20, 2010 9:19 pm
by Mart!n-GTI-DK
dantheram wrote:is it the microswitch if the boot light does not work (bulb changed and connectors under seats checked)?
I have the same problem... But mine works from time to time...
But where is the connector under the seats???
Re: Boot-lid sensor not working.
Posted: Sat Feb 20, 2010 10:15 pm
by alexperkins
The wiring for the boot light runs up the side under the pillar and door trims. the wiring under the seats is for the ABS sensors and fuel tank