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Ceramicolive
22-02-2019, 12:05 PM
Hi to all,

I'm new here and this is my first post! I just bought a B6 S4 cab yesterday night and the steering is very heavy, there is obviously something wrong with it, it drives fine but you have to put considerably more effort than I would expect too it's heavier than any car I have ever driven including ones without power steering! It is most noticeable at low speed but still an effort when on the move.

Anybody on here a B6 guru or had this problem? Are pump/rack issues a thing on these I can't find a definitive answer doing a search, a few people reporting it but nobody posting the fix/cause.

Thanks

kite
22-02-2019, 12:08 PM
Things to check.
Tyre pressure
Power steering fluid
Aux drive belt.

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Ceramicolive
04-03-2019, 05:06 PM
It was an easy fix in the end I changed the 640 servotronic relay, it took me 5 minutes and it's back to normal. superb, I even got the relay for £25 so a massive result all round!

kite
04-03-2019, 05:31 PM
It was an easy fix in the end I changed the 640 servotronic relay, it took me 5 minutes and it's back to normal. superb, I even got the relay for £25 so a massive result all round!Location of relay would be helpful for anyone else chasing this fault.

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Ceramicolive
04-03-2019, 05:34 PM
Location of relay would be helpful for anyone else chasing this fault.

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How to Find Location of Internal Relays - Audi A4 S4 RS4 - B6 B7 - 2001-2008 - YouTube (https://www.youtube.com/watch?v=C3pO4vJJjqU)

The one marked up 638 in the video is the servotronic unit.