Coolant leak - Culprit is the Coolant inlet valve seal

[inchshort]

Glad to hear you got it sorted. Looks like a batch of valves used on the earlier models only last 3-4 years.

[wardienet]

Glad to hear you got it sorted. Looks like a batch of valves used on the earlier models only last 3-4 years.

I hope you are right and they changed the part, otherwise a bunch of newer owners will be looking at “valvegate” after main warranty...


Q7 3.0 TDi ABT Power 325bhp MY16 S-Line Tech/Tour/Trailer packs, orca black, 21 inch 9.5J rims, rotor grey leather, sunroof, BOSE, ambient lighting, reversing cam, drivers memory seat. Gtechniq Crystal Serum Ultra ceramic coating. Sent from my iPad using Tapatalk.

[Gazwould]

What does the leaky part look like ?

[wardienet]

What does the leaky part look like ?

Not sure maybe someone will know the exact part. I do have a shot of the leak residue from under car though on the thread I posted here
Coolant leak strikes again... good dealer experience so far
Coolant leak strikes again... good dealer experience so far



Q7 3.0 TDi ABT Power 325bhp MY16 S-Line Tech/Tour/Trailer packs, orca black, 21 inch 9.5J rims, rotor grey leather, sunroof, BOSE, ambient lighting, reversing cam, drivers memory seat. Gtechniq Crystal Serum Ultra ceramic coating. Sent from my iPad using Tapatalk.

[folkwagen]

Not sure maybe someone will know the exact part. I do have a shot of the leak residue from under car though on the thread I posted here
Coolant leak strikes again... good dealer experience so far
Coolant leak strikes again... good dealer experience so far



Q7 3.0 TDi ABT Power 325bhp MY16 S-Line Tech/Tour/Trailer packs, orca black, 21 inch 9.5J rims, rotor grey leather, sunroof, BOSE, ambient lighting, reversing cam, drivers memory seat. Gtechniq Crystal Serum Ultra ceramic coating. Sent from my iPad using Tapatalk.

Just left in a 2015 A6 Quattro for a service, I have two year extended warranty to August 2020, CRTE engine 160Kw. I pointed out the slow coolant loss, was convinced it was the coolant pump, I could see liquid on the belt and little drop below it. Just got a call back to tell me its the Coolant valve, (they didn't say it was just the seal), they are "waiting to see if it's under warranty", and also to source the part (big main dealers?). Its a functional part of the engine, how could it not be covered ? I'm sweating now. has anyone documentary evidence of the TPI/TSB in relation to this?? This looks like the US version of it,
SB-10058574-8951.pdf - Google Drive.
How would I find a European version of this. At least I have this document to argue with, if it comes to that.

[inchshort]

Don’t worry, they will cover it if you have warranty.

[folkwagen]

Don’t worry, they will cover it if you have warranty.

I hope you're right. They've had the car since 9.30 yesterday. Still not done. The coolant valve in that TSB ( if thats the one, part 4H0121671D, ) is a simple enough solenoid two port valve, costs €35-70 for generics. What worries me is 15 minutes after I dropped the car in, the service receptionist rang me to ask me to authorise the use of the diagnostic tool to read the codes, as "diagnostics are not covered under the extended warranty". I told them "that's nice". This does not augur well. Can they really get away with **** like that? "That'll be €500 each for parts and labour, plus €150 for plugging in VagCom, another €100 for using a Torgue wrench, etc". Maybe they're used to gouging business owners, who don't even look at receipts.
What really pees me off is I paid for a Main dealer service last year, over €550 for engine oil, filter, and a fill of auto box fluid. Thats it. The rest was just faffing, check this, check that. "One tyre has only 4mm thread, we can replace it for €250", for a €95 Hankook? That's nice, also.
DIY, I would do the service for about €100 for the above materials, but extended warranty dictates I must have a service record. Now they're already making sounds about "warranty coverage". We'll see

[inchshort]

Is it Audi warranty or third party?

[folkwagen]

Is it Audi warranty or third party?

I just bought the car, approved used, with 2 year warranty, from top main Audi dealer. January 2015 pcp A6 Quattro they'd being trying to shift since it was handed back exactly at the end of 3 years. I bought August 2018, big discount on the Jan 2018 price tag. The warranty I bet is 3rd party, but I would have no knowledge of that, no documentation, just a single sheet statement. I bet they cheaped out, now they're squirming.

[folkwagen]

Now if the coolant valve is the one listed in the TSB I posted above, read this nightmare.

A6 TCU Fried Due To Coolant Control Valve Issue - AudiWorld Forums
The coolant leaks out of the valve, through the electrical connection, and travels under pressure INSIDE the plastic cable loom. Next stop, the plug into the auto gearbox electronic controller, which it fries. Jee-Zus! Lots of €k if you have no warranty.
Good news, I messaged that TSB to the Audi garage, plus a comment on them not having to replace entire box under warranty as I acted quickly. Got a call within the hour from them saying they will replace the valve under warranty, no messing with charges for diagnostics. If you have this leaky coolant valve, don't hang around until the dashboard lights up and transmission dies.