Temperature outside -39!!

[stestroud]

Hi,
Im new to all this, i dont know a great deal about cars but i love vw. Ive had 2 polos, a golf a bora and now a passat and im only 21!

Problem is, the new passat ive just got 2nd hand is great but for some reason both the computer and the climatronic read temperatures around minus 40 all the time!! Whats the problem and how do i fix it??

be gentle i am new.
Thanks!

[VEEDUBYA]

Sounds like the external temperature sensor is faulty. I believe this is located within the front bumper.

[devonutopia]

Now I know it's been chilly recently, but that's just a bit of exaggeration.

On my car, the temp sensor is located low down in the front bumper, on the nearside, beside one of the foglight panels. It looks kind of cylindrical with a pointy end.

[stestroud]

ah great stuff.
next issue then. how do i know if its faulty? Obviously itshould be rather than a loose connection and if so, how much and where from is a replacement??
Thanks for the help so far guys.

[Sam]

Using a 2002 Passat as an example

Item 9 - Outer temperature sensor - 8Z0820535

Item 10 - retainer / outer temperature sensor - 8D0820536C

[stormtrooper]

Ive had this problem myself just a few weeks back. The fault cleared the following day and it hasnt come back as yet, i can only guess that it was because i had given the car a very good wash with loads of jet washing into the front area during that day.

Have you given your car a good blasting with water recently ?

[stestroud]

hi,
no. only thing is, wjhen i bought it it had been sorn for nearly a year and was kept in a barn. Its in immaculate condition apart from this one problem. And (in ref to pic above) i did try to locate the sensor but no idea! maybe a good jet wash might do the trick?

[Izalman]

Interesting.....

My outside temp sensor goes 'glong' and shows -20c when driving in heavy rain. Sure sign that the alarm will malfunction for the next 10 days until it all dries out. CCM & under ns front well bone dry though.

Part of the rich tapestry of Passat ownership.....

Mike

[MasterMickVW]

You've got water ingress via the pollen filter housing and it running down the wiring loom into grey connector behind the LHF corner kick panel in the LHF footwell.If the car is newish try your local VW dealer as maybe covered under GOOWILL guidelines from VW and mayb repaired F.O.C or VW may contribute some of the repair costs.Get it seen to or will just get worse and cost £££££££'s to fix.