engine coolant bypass valve fault P26

[Gowz66]

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?

Hi, had the same issue with mine this week. I bought the new valve from my local dealer. Not cheap £219. When you take off the under tray, the valve is located just in front of the passenger wheel. There’s 3 small pipes coming off it and an electrical connection on the top. See part number and pic of the valve below. Hope this helps.

 

[The Vee]

Just seen this and thanks for taking the trouble to give all that info. Same as you, I did manage to replace it some time ago but still find VW’s response very very poor.

 

[Rapids]

Hi, had the same issue with mine this week. I bought the new valve from my local dealer. Not cheap £219. When you take off the under tray, the valve is located just in front of the passenger wheel. There’s 3 small pipes coming off it and an electrical connection on the top. See part number and pic of the valve below. Hope this helps.View attachment 275656View attachment 275655View attachment 275656View attachment 275655View attachment 275654View attachment 275652

Have the same issue myself, van 1 week over warranty and was told by VW that once the warranty date is exceeded the van is deleted automatically from the system. Fact is this part is clearly causing issues with a lot of owners and if its not a recall in my opinion. it should still be dealt with by VW.
The above pics and info are a great help as VW could not give me the part number and merely sent pics of the coolant system for me to identify. Will have to do the job next week, is it straightforward, was bleeding the coolant system any issue when refilling ?

 

[The Vee]

Didn’t have too many issues. Hose clips can be tricky as they are the springy compression type. Didn’t lose too much fluid but as long as engine is cold do not remove header tank cap until job done. This will prevent some loss of coolant. When topped up afterwards leave ignition turned on but do not start engine it will go through a self bleeding process until warning goes out. Check level top up and start. Usual disclaimer (!) this is how I did mine and it’s fine, but I’m not a Vee Dub tech. U

Have the same issue myself, van 1 week over warranty and was told by VW that once the warranty date is exceeded the van is deleted automatically from the system. Fact is this part is clearly causing issues with a lot of owners and if its not a recall in my opinion. it should still be dealt with by VW.
The above pics and info are a great help as VW could not give me the part number and merely sent pics of the coolant system for me to identify. Will have to do the job next week, is it straightforward, was bleeding the coolant system any issue when refilling ?

 

[The Vee]

Forgot to mention, make sure you have released any pressure in system first on the cold engine.

 

[Rapids]

Didn’t have too many issues. Hose clips can be tricky as they are the springy compression type. Didn’t lose too much fluid but as long as engine is cold do not remove header tank cap until job done. This will prevent some loss of coolant. When topped up afterwards leave ignition turned on but do not start engine it will go through a self bleeding process until warning goes out. Check level top up and start. Usual disclaimer (!) this is how I did mine and it’s fine, but I’m not a Vee Dub tech. U

Thanks for that appreciate the tips, seems with the way technology has gone you have to research first to avoid any pitfalls