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 C5 RS6 - Buyers Question View next topic
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S4 Muzza
knowledgeable


Car: C5 RS6

Joined: 13 Jan 2012
Posts: 380

Location: Ayrshire

PostPosted: Fri Feb 24, 2017 6:14 pm  Reply with quoteBack to top

I'm going to look at a 2003 RS6 tomorrow, but have very little knowledge or experience with them. I know two of the main things to look out for are the suspension and the gearbox - the suspension has all been replaced so shouldn't be an issue. The gearbox has been regularly serviced so again hopefully won't be an no issue....

HOWEVER

I have absolutely no experience with automatics, never mind the RS6. What are the signs that I'm buying one with potential gear box issues? Are there any? Any tests I can do??

Any other general pointers welcome!

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HPsauce
Skilled



Joined: 13 Mar 2013
Posts: 1427


PostPosted: Fri Feb 24, 2017 6:20 pm Reply with quoteBack to top

You're buying an RS6. Almost by definition it will have potential gearbox issues.
Make sure you run a full VCDS scan.

What do they mean by "regularly serviced" gearbox? Get documents proving what has been done.
Audi say these boxes are "sealed for life" but .......
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Noggymike
Veteran


Car: 2002 B5 RS4
Power: 430 bhp
Torque: Whatever
Engine code: BHP

Joined: 07 Oct 2012
Posts: 12209

Location: In front of you, lol'ing

PostPosted: Fri Feb 24, 2017 7:14 pm Reply with quoteBack to top

Make sure the box transfers easily, no hesitation or jolting. Try all options, paddles and shifting manually on the stick, be lazy sometimes and make sure it changes for you. No full display of all gears all lit on dash.
Make sure you use Sport!!!  

Turn everything off in the cabin and listen for any whines as it could be the torque converter.

Make sure it has no noisey hydraulic followers as 1 bank requires engine out to replace Doug told me.

Make sure cambelt is not overdue.

Brakes are expensive so check the discs.

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S4 Muzza
knowledgeable


Car: C5 RS6

Joined: 13 Jan 2012
Posts: 380

Location: Ayrshire

PostPosted: Fri Feb 24, 2017 8:47 pm Reply with quoteBack to top

Well aware that any RS6 is a potential wallet breaker - from what I've read its a bit of a lottery when it comes to the box. Thanks for the replies though, slightly more clued up than I was a few hours ago  

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C5 RS6 - smiles per gallon...
B5 S4 Saloon (Imola) - Gone
B5 S4 Avant - Gone
mk2 VW Golf GTI - Gone
B5 S4 Saloon - Gone
S3 8L - Gone
A3 8L - Gone
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Noggymike
Veteran


Car: 2002 B5 RS4
Power: 430 bhp
Torque: Whatever
Engine code: BHP

Joined: 07 Oct 2012
Posts: 12209

Location: In front of you, lol'ing

PostPosted: Fri Feb 24, 2017 9:06 pm Reply with quoteBack to top

S4 Muzza wrote:
Well aware that any RS6 is a potential wallet breaker - from what I've read its a bit of a lottery when it comes to the box. Thanks for the replies though, slightly more clued up than I was a few hours ago †


The box is a lottery, but there are a lot more repair places out there to sort it at a sensible price compared to when I had mine.


Great cars tho Murray, bags of space, perfect for young family and tbh on par with the B5's re maintenance.

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S4 Muzza
knowledgeable


Car: C5 RS6

Joined: 13 Jan 2012
Posts: 380

Location: Ayrshire

PostPosted: Fri Feb 24, 2017 9:37 pm Reply with quoteBack to top

Noggymike wrote:
S4 Muzza wrote:
Well aware that any RS6 is a potential wallet breaker - from what I've read its a bit of a lottery when it comes to the box. Thanks for the replies though, slightly more clued up than I was a few hours ago †


The box is a lottery, but there are a lot more repair places out there to sort it at a sensible price compared to when I had mine.


Great cars tho Murray, bags of space, perfect for young family and tbh on par with the B5's re maintenance.


Cheers mike, very reassuring and good to know. My google reasearch was throwing up prices of £5k plus to fix the box.... I take it/hope costs have come down a little??

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C5 RS6 - smiles per gallon...
B5 S4 Saloon (Imola) - Gone
B5 S4 Avant - Gone
mk2 VW Golf GTI - Gone
B5 S4 Saloon - Gone
S3 8L - Gone
A3 8L - Gone
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Noggymike
Veteran


Car: 2002 B5 RS4
Power: 430 bhp
Torque: Whatever
Engine code: BHP

Joined: 07 Oct 2012
Posts: 12209

Location: In front of you, lol'ing

PostPosted: Fri Feb 24, 2017 9:45 pm Reply with quoteBack to top

S4 Muzza wrote:
Noggymike wrote:
S4 Muzza wrote:
Well aware that any RS6 is a potential wallet breaker - from what I've read its a bit of a lottery when it comes to the box. Thanks for the replies though, slightly more clued up than I was a few hours ago †


The box is a lottery, but there are a lot more repair places out there to sort it at a sensible price compared to when I had mine.


Great cars tho Murray, bags of space, perfect for young family and tbh on par with the B5's re maintenance.


Cheers mike, very reassuring and good to know. My google reasearch was throwing up prices of £5k plus to fix the box.... I take it/hope costs have come down a little??



Yeah definitely.


Enjoy no lag as well!!!

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tiz
Brand New, Welcome :)


Car: Audi S6 C5 & urS6
Power: stock
Torque: stock

Joined: 17 Aug 2013
Posts: 9

Location: West Yorkshire UK

PostPosted: Sat Feb 25, 2017 3:35 am Reply with quoteBack to top

My experience is from an S6, but...

Rebuilds are approx £2000 - I used Ron's Autos in Huddersfield. A ZF servicing kit is available for around £800 +VAT. Failures are common around 110-160k. If someone has changed the ATF at 75K, they are probably following the forum guidance. If they are changing it at 130k, they have probably waited until they have detected a few clunky changes or the box has started throwing codes.

Take off †from standstill as slow as you can, accelerate gently up and decelerate gently down through all the gears.

Take off †from standstill as fast as you can, accelerate hard up through all the gears.

Stop and slowly alternate between Drive and Reverse while the engine is idling.

Repeat in Sport mode as well as normal mode.

The real cause for concern is any feeling of slipping clutches, which is hard to tell if you don't know the gearbox. You are also listening for clunks and feeling for any hesitations at take-off. However, the ZF gearboxes can be a little lumpy.

Check for greasy dust around the gearbox casing. Ask how they refilled with ATF and walk away if they didn't fill while the engine is running and each gear was selected in turn. Make sure they monitored the ATF temperature whilst refilling.

Slipping should throw 'Implausible ratio' codes. Always scan for codes and check the OBD flags for signs that engine codes have been cleared recently.

17090 Transmission Range Sensor (F125) codes are usually relatively easy and cheap to repair - the F125 switch is easy to access and is about £180.

17114 Gear Ratio Monitoring: Incorrect Gear Ratio codes are the bad on    es.

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