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Yes, you will need to remove the driveshaft, clean up the ring location as best you can then heat the new ring and gently tap it into place.

No diagnostic equipment picks it up, I have tried 3 different machines including a VAG one. Pop off the wheel and remove the big bolt in the centre of the hub/disc, usually a 14mm allen key. Then you can push the driveshaft out far enough to be able to see the ABS ring from the rear of the hub where...

This sounds very much like a broken ABS reluctor ring on the driveshaft, mine is doing just what you say and its broken a rear one. Unable to pick it up on Vagcom either.

Grizz, you have PM

Coolant Temp Sensor - common as muck......

i did this repair to the wifes MK4 GTI turbo, removed the pump, drilled out the rivets, split the casings, cleaned, lubricated the o ring with grease and reassembled with new bolts and nuts. been good for over 2 years now!

Are these still available?

I had a B6 S4 Avant which I bought with an Audi fitted detachable towbar. It was fitted from new, unsure of the cost but there is certainly one available from Audi......

It could be a spare unused one, have seen that before amny times. Suspect if car running fine and no fault codes then that is what it is.

If I have time at the weekend I will have a look at mine to see if I can see the same blue plug.

Interesting debate!!

When I purchased H&R's for my RS6 the sticker on the rear shocker said "Passat Synchro" and I assume everyone else who has H&R's has the same sticker.

You have PM

John, to be honest the 2.5tdi's are not the best engine Audi ever made. Fuel pumps are a very common problem and cost the guts of a grand to repair/replace (I have replaced several on all ages of the 2.5tdi). Turbos have been known to be weak also, not to mention the usual air mass meter problems. A...

Suspect it is the air con drain as Mooch advises. IIRC the drain is at the passenger side bulkhead behind the glovebox area (close to the main heater box in the centre). You should be able to see a plastic pipe exiting through the bulkhead facing downwards. From past experiences the end of the pipe ...

275 for 4 bald tyres??

Purely just curious my friend