Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)
Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie
Please note that it is not permitted to have referral links posted in your signature. Keep these links contained in the appropriate forum. Thank you.

https://www.boards.ie/discussion/2055940817/signature-rules
Hi there,
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest

2005/2006 TDI 1.9 Passat Immobilizer active vs faulty oil pump

  • 23-01-2011 4:37am
    #1
    rupamede
    Closed Accounts Posts: 89 ✭✭


    Could someone please tell me if it is possible for a faulty oil pump to trigger the immobilizer on a TDI 1.9 2006 Passat (manufactered in 2005). Details below:

    Car stopped twice due to Immobilizer active. This always happened after I parked the car to go to the shop or so and always after the system had previously prompted me to refuel the tank although at the same time it indicated I had at least 90KM left.

    1st time, I got out of the car, waited 5 min and then it started again.
    2nd time, had to be sent to VW where they 1st said it was the battery which they replaced and car was going fine again, but then after a few hours when they were checking it just before collection, they said it was not starting anymore and now it was something else like the Flywheel and Clutch for which they wanted to replace one unit for 450 euros, then if that did not work, they would replace another unit for further 400 euros. They were not able to pinpoint the problem and in the end said they weren't even sure it really was a Flywheel and Clutch problem. They said it would cost me at least 2,500 euros to fix it in a way they could guarantee it would not give me more problems.

    Since I cannot afford that and at that time the car was going fine again, after they put my old battery back into it, we decided to bring the car back and it's been like waking on thin ice everyday I start it, but it's been fine until today when it just stopped. Out of curiosity, I opened the bonnet and saw that the oil filter was flooded on the outside, so we opened it and realized there was hardly any oil inside the oil filter thingy. This made me recall a time last year when my partner completely forgot to fill the tank and the thing just was air locked so we put diesel into it and the car started again. We believe it is the oil pump that's faulty and that was what was triggering the immobilizer... but are we correct in our assumption?

    I do remember that before saying 'Immobilizer Active' on the 2 occasions described above, the dash also did indicate 'engine fault' - I can't remember the exact wording but for me it suggested that the diesel wasn't getting into the engine or something...

    It seems to be obvious that when the diesel is low the pump is not strong enough to pump it to the filter... as there was hardly any diesel in the filter after we topped up the tank with diesel today... so I am going to have the oil pump replaced for around 250 euros, but is it possible that this faulty oil pump actually caused/triggered the Immobilizer? is this is a normal thing a car would like a safety precaution against people who tamper with the oil tank, for example? Or am I just having a wishful thinking moment?

    Please advise as best you may from your own experience or expertise.

    Thanks,

    R.


Advertisement