Need new shocks- DRC failure or wear and tear

[jonathanb]

I am looking as always for a bit of advice from forum. I have a 52 RS6 Avant with 70k on the clock. I have noticed the ride gettinig crashy for about a year i.e. at 60k and informed my dealer who having tested the car assured me that there was no problem (I know what the problem feels like as the DRC failed at 44k with two new rear shocks and all gthe gubbins needed). The car was last tested with this result in November at about 67k just before my Audi warranty was due to run out. Car sent back in again in March to same dealer but now with a warranty direct warranty and guess what they agree that there is a problem and that the ride is indeed poor. They have now pressure tested and believe that there is insufficient pressure in the system and consequently two new front shock abosrbers are needed. However because they are not visibly leaking from the outside short of chopping the shocks open the tech is saying his view is that it is wear and tear. If it is then I don't mind paying. However would appreciate a view from anyone who is technically minded as to whethe these shocks could be worn at 70k (never been on a track and almost all motorway and fast a road driving) or whether there is a legitimate view that there is a valve falure due to DC failure- also how do they know if it is the front or rear shocks or do they just test the pressure in the shock cannisters?- any thoughts gratefully received. Kind regards

Jonathan

[PhilT]

Read the DRC threads.... DRC is basically sealed for life - i.e. once it goes wrong, it seems the only way to fix it permanently is to get rid and go aftermarket.

[GardinerG]

They have now pressure tested and believe that there is insufficient pressure in the system and consequently two new front shock abosrbers are needed

Every time you pressure test you lose a little pressure. Replacement dampers and pipes are supplied empty. From my understanding, to pressure test you remove a link and test the rest of that diagonal circuit not the shock, if it drops below a threshold set by Audi then it's a new central valve needed as well.

My question would mirror yours that in a diagonally linked system how can they say the front shocks have gone without visible signs of leaking or seal failure?

First they would ordinarily try a repressurisation (providing pressure loss isn't already too much), this would most likely lead to leaking (as mine did). Then you would know which shocks to replace.

As PhilT says, have a read of the DRC threads:
http://www.rs246.com/index.php?name=PNp ... ic&t=69690
http://www.rs246.com/index.php?name=PNp ... ic&t=59811

Dunno if that helps.

Grant