Alarm goes off when I lock my 02 Passat

[pol66]

hi im having the same problem with my 01 estate i was just wondering if your boot hatch is working or maybe this is a seperate problem for me ill b takin my carpets out at work tommorow and ill see if ive any water there hope u get yours sorted

hello i am also having the same problems as you. i have a 01 passat estate the carpet in the back passenger side is soaking as is the front.did you get yours sorted?

[DRSWANSTON]

The short answer is no , I could not get my dealer or the Country dealer to take any notice. I have given up on this . Next car will be another maker perhaps Honda , If I live that long !!

[pol66]

hi dozz,i am having problems with my 01 passat estate. the front and back passenger carpet is soaking wet,the alarm goes off every now and then. i was wondering if you had the same problems with your car, i would love to get this sorted as i cant even sell it due to this problem. yours pol66

[richieb]

hi pol66 ive sortof got my passat fixed im fortunate and in the motor trade and have been able to make friends with my local dealer ship and one of the mechanics is helping me by borrowing the diagnostic vw tool as ive already got a new ccm and repared all the wiring .the diagnostic tool is used to reprogram the new ccm to the main ecu and keys.
if you lift your carpet ont he passenger side foot well you will find its wet(mine was nearly an inch deep in water and the module inside its sealed(ha ha ha)box was full and green but my carpets felt dry.
rty seeing if any of the mechanics in your dealer ship are up for a forgener most of us are! good luck.
ps my ccm cost £190 from vw trade dont be robbed!
pps if your going to trade the car in (i didnt tell youthis)if you get in your car with the carpet up and the module still conected with the key out of the ignition and all of the doors locked and windows shut you can disconect the plugs from the module and every thing except for the alarm and the remote control will work(eg cenral locking/windows/boot release)

[Rog le Vin]

Just bought a 2002 estate, guess what alarm goes off randomly. Will try water in footwell search but also suspect faulty sensor. Does anyone know what these sensors are? Can't see the old button microswitch on doors/boot/bonnet.
UPDATE
1 week later sorted! Wet footwell and water had corroded the grey connector behind the left side front footwell trim.
Interestingly VW gave me the new gasket gear for the pollen filter housing where the water was pouring in!!
Repaired pollen filter housing and replaced corroded connector with a new connector(not from VW) and everything now OK

[johnb]

Hi All.
Guess what?
I have a 2001 Passat SE Saloon and the Alarm started going off last week for no apparent reason every time I locked the car.
Pulling Fuse 14 enabled me to lock the car with key only when parking up until I got the problem sorted, but beware as this disables the Alarm function.
Checked the passenger and drivers side footwells under the carpets but both were bone dry - no sign of any water ingress.
Puzzled I had to take it to my local Auto- Electrician.
They discovered a short in the Alarm wiring behind the Dash and sorted the problem for me ( cost £132 ).
The following day I had a problem with the Indicators flashing erratically and stopping on occassion - had to buy a new hazard relay switch to sort it ( cost £15 from VW ).
I used to like my Passat but I am now not so sure - had a Honda Accord prior to this and never had any problems at all - will think twice before buying another VW.

[Doh]

Hi all, sorry to drag up an old thread, been having alarm problems for months but never had any damp issues till today when i noticed the passenger footwell was damp! my car is actualy booked in for a lube service tomorrow (70k 1.9 TDI 2002) do you think i should up it to the one with the computer check and get VW to sort it? or should i have a go a tackling the problem myself (i'm pretty handy with the spanners)

also this morning i had a warning come on te dash "Engine Workshop!" for a couple of seconds, then go offer... never had this before, to u think its related? or another fault...

jez and i bought a VW cos there supposed to be reliably ive only had it 6 months!

[Rog le Vin]

Hi all, sorry to drag up an old thread, been having alarm problems for months but never had any damp issues till today when i noticed the passenger footwell was damp! my car is actualy booked in for a lube service tomorrow (70k 1.9 TDI 2002) do you think i should up it to the one with the computer check and get VW to sort it? or should i have a go a tackling the problem myself (i'm pretty handy with the spanners)

also this morning i had a warning come on te dash "Engine Workshop!" for a couple of seconds, then go offer... never had this before, to u think its related? or another fault...

jez and i bought a VW cos there supposed to be reliably ive only had it 6 months!

DOH,
99% certain you've got the dreaded pollen filter gasket leak. Its relatively easy to sort, awkward rather than difficult so it takes time. To sort do the following:-
1.Visit www.weirdlittlebiscuit.com/passat/leak/index.htm to clear all the accumulated sludge around the pollen filter housing and the 2 bulkhead drain holes.
2. Renew the pollen filter housing to bulkhead gasket with whatever vw currently give you. This is where the water gets in, runs down the wiring loom, connectors and fills the passenger footwell.
3. Remove trim left hand side passenger footwell (and glove box) to expose lots of wiring harness connectors.
4. Lift passenger footwell carpet and insulation to expose ecu box inside a non watertight plastic box! and wiring loom.
5. Disconnect ecu box.(don't worry you don't have to have it reprogrammed unless you need a new box.
6. Dry out the footwell (The carpet and padding will take a couple of days)Take the tapes off the wiring loom in the footwell, spread the wires out and let them dry. Some wires you will see have joints in them with a little sleeve over, check for corrosion.
7. Open up each connector exposed in 3 above and check for corrosion. WD 40 it before you close it. I found the grey connector, this carries alarm, aircon and other bits of info for the ecu, (bottom right as you look at them) badly corroded and replaced it with a power connector from maplins electronics, the vw repair kit is unneccessarily fiddly.
8. Let everything dry out and presto you'll be in love again with it.
9. Or you can give it to vw to sort but have big bucks ready, over £1000 not unusual.

[Doh]

Hi, yeah i managed to find the time to have a go managed to get the battery out and my rubber gommit thinks weren't too bad, but there was loadsa crud round the pollen filter and the glove box was full of water that i hadn't noticed... i got the carpets ups and it was soaking! all the electrics were wet, i dryed everything out but couldn't find the ECU ?

i couldn't for the life of my figure out how to get the pollen filter holder out

looks like the problems temporaryly sorted at least, the carpets stayed sry and the alarm hasn't gone off so far...

unfortunately my engine light came on again but i think this is unrelated is i've got like a missfire on full engine load

[katies dad]

I've only owned my 2001 Passat Saloon for a month. The day after a very wet drive home from Edinburgh, my car alarm activated for no reason. The car was started and then switched off and this seemed to solve the problem. A few days later whilst cleaning the inside, I discovered that the carpet in the front passenger footwell was damp.

Through this forum, I was able to identify the problem and explain to the mechanic who services my car what I thought it was. He unblocked the drain holes which were totally blocked and all for forty quid.

I dried everything else with a hair drier, and touch wood, all seems ok.

My question is this. Does anybody know how often should the drain holes be cleaned out?