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Discussion Starter · #1 ·
hi guys my alarm keeps going off because when i put keys in it says the tailgate is open but its not, i use to get this message sometimes and id slam it shut and it was ok but now nomatter how hard i close it still says its open then the alarm goes off...any sugestions whats causing this? anything i can do to turn the alarm off? thanks

ps ive pressed the lock button twice to deactivate the alarm but the indicators flash every so often what does this mean?
 

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I know exactly what this is mate as I had the same. Mine was going off in the early hours. I used to sit in the car and see it say the boot is open when it wasn't. I took the battery lead off in the end to stop it going off.

The problem lies with the boot micro switch. What happened with mine is that the rear washer jet was leaking onto it as the pipe came away from the I side of the tailgate. I tried to blow out the water with an air line but it was still the same until I bought and fitted new boot micro switch (comes with boot catch).
When you fit it make sure all the pins are there and not corroded/fallen out. Also check rear washer pipe is connected securely.

HTH
 

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Discussion Starter · #3 ·
thanks alot mate for the responce i thought it might have been water related from what ive read on google, thought it might just dry out or spray it with wd40 but ill get a switch anyway cant be that expensive ....cheers bro
 

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As Andy has mentioned above. definately related to the rear washer jet-common problem for them to leak.

time to dewiper and block the rear washer pipe :p
 

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Yip been there mate, took the boot lock connector off and dried it with a rag, then sprayed it with WD40 and all better now, just water/dampness in the connector mate, if that fails leave it disconnected until it drys out and try it again, if that fails then replace, good luck.
 

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thanks alot mate for the responce i thought it might have been water related from what ive read on google, thought it might just dry out or spray it with wd40 but ill get a switch anyway cant be that expensive ....cheers bro
You can't buy the microswitch by itself from VW and even if you could ge it from somewhere else,it's almost impossible to replace with breaking the new one.WD40 VERY rarely cures problems like corroded contacts caused by being soaked in water mixed with screen wash,a new lock mechanism is only about £25 inc VAT and iss the only guaranteed fix.

Chris.
 

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Discussion Starter · #7 ·
seems like its dried itslef out overnight but still looks very wet inside and the insulation was soaked on the trim so dried it out. the switch wire was very clean and came off easy everything looked in good order so sprayed it and covered all the switch with vasaline...left trim off to dry might cover that insulation with plastic and gaffa tape the edges down so it dont get wet again..all seems ok so far but if it goes off again ill get a new one, can i just leave the wire off to stop the alarm goin off? or will it afect the locking? thanks for all the replies :)
 

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I have mine permanently disconnected now, It still locks & opens via the central locking. The only downside is now if the boots open, it doesnt warn you on the mfd anymore.
 

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can i just leave the wire off to stop the alarm goin off? or will it afect the locking? thanks for all the replies :)
If it doesn't know when the boot has been opened and closed it could auto re-arm and lock the keys inside.

Chris.
 

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can i just leave the wire off to stop the alarm goin off? or will it afect the locking? thanks for all the replies :)
If it doesn't know when the boot has been opened and closed it could auto re-arm and lock the keys inside.

Chris.
Aye, I forgot to say that. If you unlock the car & only open the boot you have to be careful & make sure you havent left the keys in the boot before you shut it!
 

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aahhhhh ive not had my golf long but it has just developed this problem in the last day or 2. i did suspect the boot as when i unlocked the car and opened the boot without opening a door it would set the alarm off plus when ever i use the rear washer it seemed to take a few seconds before any water came out. i did think this was 2 diferent problems but after reading this i now think the 2 problems are linked

great site and amazing amout of knowledge on here. thanks
 

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Hi, I have a similar problem. My wiper hasnt leaked and the microswitch is now disconnected but my alarm is still going off. Any ideas? really driving me mad and need a fix this weekend so my wife can get to work on monday.
 

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Hi, I have a similar problem. My wiper hasnt leaked and the microswitch is now disconnected but my alarm is still going off. Any ideas? really driving me mad and need a fix this weekend so my wife can get to work on monday.
So does EVERYTHING on the car work as it should?

Chris.
 

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Ive tried double locking which I think should disable the alarm but it still goes off. I cant even leave it unlocked as its just relocking itself and then after about 10 mins the alarm is going off again.
 

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I've just tried to fix this on a friend's car and thought that disconnecting the microswitch connector would stop the alarm - but it didn't. You can actually open the connector up, mine was well-manky inside (green / corroded) so I just chopped it off completely & taped up the 3 wires separately. Alarm silenced, job done I thought.

However when driving the luggage compartment warning now comes on, and when locked the hazards flash every now and then. I'm guessing the same connector talks to the alarm and the CCM. Does that make sense? Guess I'll have to re-connect and fit a new lock mechasism.

The leak causing the problem was difficult to find but hopefully it's sorted - join between the brass pipe running through the wiper motor and the plastic jet nozzle was very poor & it leaked.
 

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Problem solved. Found Dan (DiW) on the vagcom list. What a lovely helpful guy. traced it to the boot microswitch after all. Coupled with a dying battery caused by the cold snap. Battery charged and fault codes reset with Dan's invaluab le help and the problem has gone for now. Just have to fix that microswitch now. Can I get a replacement connector as well as the latch?
 

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I spoke too soon. 10pm last night the alram fires again. why in the light of day did we not see the massive scrfeenwash stain on the passenger c-pillar or the fishtank load of water swimming around the inside? why why why. so at 7 am this morning in the dark and cold I have stripped as much of the trim out as I can and removed a very soggy cd changer. WHo in VW thought putting a shitty L shaped join for the screen wash up in the headliner above all that electric stuff was a good design plan!?

Hopefully by fixing the crappy seal and drying everything out we will have solved the problem. Anyone know how to get the side carpet trim out from where it goes under the rear bench? Does the seat have to come out?
 

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Right I have now given in due to time and frustration and He's booked into WAS in Worcester. they think that the microswitch is still the cause despite being unplugged as the car needs it in to create the correct looped signal. Locking the boot manually with the key stops the alarm going off so they may well be right. But its a relatively cheap fix so worth doing to find out. Then I have the joy of putting all the inside back together again!

I'll update on friday once he's back from the garage.
 
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