What is DRC??

[crown62]

Sorry if this seems a thick question.

Had my Black avant a week now 07 with 15000 miles.

Noticed in a few threads a mention of DRC? what is DRC? one quote I spotted said.....(Check DRC has been done (but warranted by Audi in any event till 2011)

So what is DRC and am I covered till 2011, if its not been done is it done for free by Audi?

[RS4-Chew]

Dynamic Ride Control

http://en.wikipedia.org/wiki/Audi_RS4

(extract uplifted from above URL)

B7 suspension and steering
" The B7 RS4 also incorporates Audi's "Dynamic Ride Control" (DRC)[5] "Sports Suspension"[5] mechanism. The dampers (shock absorbers) are made for Audi by KW, and central reservoirs/valves made by KYB (Kayaba). In the RS4 suspension, a fluid hydraulic linkage between diagonally opposing front and rear suspension dampers (left front to right rear, and vice-versa) is used to counteract vehicle pitch and roll.[5] Lightweight magnesium/aluminium alloy multi-link suspension arms (four arm with virtual steering axis up front,[4] and trapezoidal arm with unequal length track control arms at the rear)[4][5] locate each hub/brake/roadwheel assembly in a controllable fashion, whilst minimising unsprung masses. Lightweight hollow tubular anti-roll bars are standard front and rear.[4] Compared to standard B7 A4 models, the RS4 features a 30 millimetres (1.2 in) lower ride height.[5] An optional "Sports Suspension Plus"[5] lowers the car by a further 10 millimetres (0.4 in), and marginally further stiffens the damper rates.

Axle track has also been increased over standard A4s; the front widened by 37 millimetres (1.5 in),[5] to 1,559 millimetres (61.4 in)[4] and the rear by 47 millimetres (1.9 in)[5] to 1,569 millimetres (61.8 in).[4] "

Speed sensitive "servotronic"[5] variable-assistance electro-hydraulic power assisted steering (PAS) is controlled from a compact flat-bottomed steering wheel, finished in perforated leather with mock-aluminium trim. The steering rack ratio is 13.1:1,[4] and the turning circle is 11.1 metres (36.42 ft).[4]

[crown62]

Thanks for that, that is quite comprehensive.
I have SS+ suspension.
Is there an issue with it? How do you spot there is a problem with it? other than the handling goes to pot!
Is there some sort of cover by Audi until 2011 on all cars?

[worsy]

Vague feel in the steering and clunks. By then it's knackered though. Worth putting on a ramp and checking for leaks from the damper units.

[Steve_C]

Audi have given a 'goodwill' warranty on DRC until the car is either 5 yrs old or has done 75k miles. Some say that the car has to be serviced exclusively by Audi during this 5 yr period for this warranty to apply but some on here have had the warranty honoured even though a service or two has been carried out by non-Audi garages.

[Sims]

Audi have acknowledged the DRC problem, that's good.

There are so many threads on this subject, here's a recent one that highlights the action by Audi America.

http://www.rs246.com/index.php?name=PNp ... ic&t=85421

[Sims]

& one more recent thread, that provides a link to a log of DRC failures, kindly update if appropriate.

http://www.rs246.com/index.php?name=PNp ... ic&t=85511