04 2.0tdi Cooling fan - jls
I have an A3 2.0 tdi. The cooling fanstays unless I disconnect the battery, I have disconnected what I believe to be the cooling sensor (between battery box and engine),
but the fan just keeps going. I believe there must be a relay some where that operates the fan and would be grateful to know where to look plus any other suggestions.
There was a faint small of electrical burning that possibly is a relay but no fuses have blown.
04 2.0tdi Cooling fan - Screwloose
jls

The engine cooling fan control module is built into the fan itself - where it will never get wet.....

Pull Maxi fuse 54 [50A] in the engine-bay fusebox to disable both the fan and module.
04 2.0tdi Cooling fan - jls
screwloose:
There is a maxi fuse 52 and 53 but no fuse in position 54, handbook quotes this as
'radiater fan output stage' however not installed in this car.
04 2.0tdi Cooling fan - Screwloose

Have you got more than one fan - I took it from your initial post that there is just the one?

If you have two; then you'll have to unbolt the 80A block fuse in position 3 of the power distribution plate under the engine fuse box.

Try removing fuse 8 in the engine box first; that feeds the cooling fan module circuitry - just not the fan motor itself.
04 2.0tdi Cooling fan - jls
Screwloose,
MAGIC!
Yes I have 2 fans (o/s one was not running) and yes the other (main ) fan has stopped with the removal of the fuse.
Question: I take it the fan that is continually running is actually kaput or is there a service item in it?
thanks for the info.
04 2.0tdi Cooling fan - jls
screwloose,
ps fuse 8 did notmake any difference which is why I went looking for a relay ofsome sort.
04 2.0tdi Cooling fan - Screwloose
The fan and it's control module are one unit AFAIK. It's likely that water has got in to the module and the internal relays have stuck on and melted - hence depowering the module itself didn't work.

Check with Audi for separate parts availability - if you're lucky; the last one of those I fitted on a Golf was over £300 for the pair of fans as one unit.

Edited by Screwloose on 12/07/2008 at 20:03

04 2.0tdi Cooling fan - jls
Screwloose,
Thanks again for all the info, I will post again after I sort out the part(s) and let you now the result.
would the car run on the second fan for the moment if I remove the faulty one?
04 2.0tdi Cooling fan - Screwloose

If the cooling module in that fan has gone; probably not, as it controls both.
04 2.0tdi Cooling fan - jls
Screwloose,
I have removed the fan and stripped the motor to reveal 2 burnt out power transistors,
I will try and find a replacement fan ass.
04 2.0tdi Cooling fan - Screwloose
jls

Useful to know; I don't get the time to investigate what's inside - VAG are getting a bit keen if they're using transistors to power a big fan.
04 2.0tdi Cooling fan - garden-tidy

hi did you find these in the big fan ?

 

Ask Honest John

Value my car