engine coolant bypass valve fault P26

Lucky T6 owners.
Cheers for setting that straight.
Phil - What do you reckon on a recent software update could have caused the influx of Coolant Valves being stuck? Seems a wide range of T6.1 'suddenly' showing up with the same issue. Or is that hyperbole?
Doubt it, seen this fault enough times over the past 12-14 months for it not to be due to any recent software changes.

More likely poor quality part from whoever the supplier of the valve is.
 
Fair enough.
I've only found this issue as it affected me.
Everyone in the know said words to effect of 'I've seen loads of those recently'. Recently could well be the last couple of years (strangely enough, since the T6.1 has been around).
 
Mine has just done this diagnostics say engine coolant bypass valve A. Took it to dealer and they didn’t want to know as warranty ran out last week!!!!! So, can anyone tell me the part number and where it is located on the engine please?
 
I was told by VW Assist that it needs some special equipment to do it. Something to do with certain parts needing a partial vacuum.
You might be able to haggle with dealers as it seems to be a known issue. Mine went after 16 months from new (17k miles) about 2 weeks after purchasing it from a dealer.
 
I was told by VW Assist that it needs some special equipment to do it. Something to do with certain parts needing a partial vacuum.
You might be able to haggle with dealers as it seems to be a known issue. Mine went after 16 months from new (17k miles) about 2 weeks after purchasing it from a dealer.
Appreciate the reply, thank you. To be quite honest, while I won’t name and shame, I’ve had a couple of warranty issues with the dealership. Having had the vehicle for 3 years now and much as I love it, the attitude always seems to be “our vehicles don’t go wrong Sir, it must be you”. Very frustrating!
 
Hilarious.
Just found and read your other thread on this topic which has given me the info I need. Interesting to note others having issues with the dealerships. Makes me wonder if it’s more VW than the dealership - anyway guess that would be for another thread.
 
Just came across this thread...my 22 plate 6.1 went in for a routine servcie last June and came out with a warning light on the dash (can't remember which one lol) so went straight back in and they connected it up and found it was a faulty coolant bypass valve. they told me it was ok to drive so it went back in a week or two later and it was replaced under warranty...since then this info comes up every time i turn the ignition on (no warning lights)..figured when its next in for a service ill ask them to have a look why.
I've looked in the 'vehicle wallet'....no information.:rolleyes:

IMG_1849.jpeg
 
At first I thought that pic was a joke.

I get just the 'Check Vehicle Wallet' when switching off engine. I assumed that was to remind you to pick up your phone/filofax/chalk+slate from the storage compartment before leaving the van.
Is there coolant level low?

Anyway - just did a quickie search and, bless this forum,Loz and DellMassive, found this:
It might be the means by which The Vee can do their own coolant valve. Possibly. Not sure.
 
Just came across this thread...my 22 plate 6.1 went in for a routine servcie last June and came out with a warning light on the dash (can't remember which one lol) so went straight back in and they connected it up and found it was a faulty coolant bypass valve. they told me it was ok to drive so it went back in a week or two later and it was replaced under warranty...since then this info comes up every time i turn the ignition on (no warning lights)..figured when its next in for a service ill ask them to have a look why.
I've looked in the 'vehicle wallet'....no information.:rolleyes:

View attachment 237540
Next time the message comes up on the dash, just leave the ignition on until it goes out.
 
At first I thought that pic was a joke.

I get just the 'Check Vehicle Wallet' when switching off engine. I assumed that was to remind you to pick up your phone/filofax/chalk+slate from the storage compartment before leaving the van.
Is there coolant level low?

Anyway - just did a quickie search and, bless this forum,Loz and DellMassive, found this:
It might be the means by which The Vee can do their own coolant valve. Possibly. Not sure.
Thank you whodat. Fortunately I do have access to the vacuum kit and the software for the pumps etc. appreciate the follow up
 
I’ve had the same fault this week. Same valve after 18 months, 25k miles. Part is on back order to VW Assist are coming back to fit at home.
 
Hi All, I am new to the forum and am hoping for a bit of advice related to the coolant bypass valve issue on t6.1.

I have put a deposit down on a 110bhp model from 2021 that is being sold with an independent dealership. The garage was prepping it for sale and found the bypass valve fault, so it is now booked in with VW to do the work. Which they are sorting out.

Reading the thread it sounds like this fault could damage the engine if it has been driven with the faulty valve.

The vehicle will come with a 3 month warranty.

Any thoughts on if this raises other concerns… or reassurances the work is being done prior sale? It’s a pretty big purchase, so advice appreciated.

Thank you.
 
We had the same problem on our 23 plate T6.1 Sunday night. Only had it 3 months. Ended up getting towed home and no VW asssist available. They came out yesterday morning diagnosed the same fault but said as per earlier posts it needed to go to the dealer to be done due to the vacuum but would be under warranty. Its booked in today at the dealer to be fixed today, which I’m expecting to be fine under the warranty. So let’s see what happens when I get there
 
We had the same problem on our 23 plate T6.1 Sunday night. Only had it 3 months. Ended up getting towed home and no VW asssist available. They came out yesterday morning diagnosed the same fault but said as per earlier posts it needed to go to the dealer to be done due to the vacuum but would be under warranty. Its booked in today at the dealer to be fixed today, which I’m expecting to be fine under the warranty. So let’s see what happens when I get there
Hi Clare, did the work get sorted ok? Wondering if VW have figured out a longer term fix for the bypass valve failure?
 
Are you down south?

Changed a few of these bypass valves recently, but hadn't seen a tpi yet.
Hi
This problem is also my car, unfortunately the car is already under warranty. Could you give me the part number?
Regards
 
Hi Gre,
Do you mean that the van is your car or that you have a car with that problem?
If it is under warranty then the dealer should fix it free.
 
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