coolant leak

Evening all. Apologies if this has been asked before, I have done a quick search but can't find a definitive answer. The time has come for my EGR cooler to throw the expected leak. The one currently fitted is part number 04L131512T. My question is, is 04L131512CF interchangeable? I can find...

Wondering if someone could help me out with a part number for the engine coolant sensor located underneath the intake manifold, replaced intake manifold and now have coolant flooding out of the sensor

I’ve been having problems with my van losing coolant for the last year and I’ve popped up on numerous threads when other people have reported issues, so time to start my own thread. My van has got 120k miles on the clock, I had the EGR swapped earlier this year and the leak got better but...

Hello guys, I own a VW T6 2017 2.0 TDI (150 HP). Long story short - coolant was leaking, head gasket, EGR fixed but it's still looses coolant. I found out that the intercooler coolant hoses are at best - slightly warm if not cold even though the engine is hot. Is it normal or we are looking at...

Hi All, I have a weird one that many of you many be able to help with if you have a moment. Is it normal for the coolant system on a 204ps BiTDi to be under pressure when cold? If anyone has one, that is cold, and could spare me 2 minutes of your time, could you please take the coolant cap...

Hi, My 2019 150ps caravelle has sprung a leak. It looks to be coolant that's running to a heater at the rear. I have an extended warranty that's valid upto November this year. I'm guessing from reading other posts this won't be covered since it's classed as perishable. Has anyone else had a...

Hi all I recently bought a 2016 61k miles T6 campervan (ad blue). Private sell. Runs well but the coolant light came on after a couple of weeks. Topped up and found the level had dropped again after a couple more weeks. I think I lost about 200ml over 250 miles. Then again I added a similar...

Hi Guys, New to the forum as a contributor but have found the threads immensely useful over the years, finally time to get involved! We have a 2018 204 DSG 4Motion Kombi in our workshop at the moment that is losing coolant. I've read a few threads on T6s with this issue and once a physical...

I know this was covered in many posts but I couldn't find one with symptoms that I'm experiencing. No butter on oil filler cap or oil dip stick. Warms up as usual and keeps 90 degrees temperature. Oil level OK. From my observations it looks like I'm loosing coolant mainly on short trips 15-30...

@mmi : I understand you are a bit of an Oracle when it comes to this subject. Any advice? @Niknak : I've seen you post previously about a link between coolant leaks and NOx sensors failing. Can you please share a bit more info of what the link is? Anyone else have some good advice? I've just...

Looking for some help / advice / experiences about internal coolant issues with ex AA vans. I bought an exAA T6 (150bph 2.0 TDI) with 102k miles that has an internal coolant issue. It has been losing coolant. The ERG cooler has been replaced and the charge cooler has been tested from the place...

I have just got my van back from my local garage were they spent several days replacing sensors. I was getting high oil temp on gauge and camshaft pos sensor fault on carissa. The van drove about 10 miles before the light lit up again, it cleared and drove back to the garage no problem, does...

It has 170k km My mechanic did a pressure test and found no faults It is losing the coolant unevenly, Once I drove it for 1500km for it to lose the coolant, but sometimes it happens only after 50km, it never happens while driving interestingly it always reports that it doesn't have coolant when...

I’ve got a 2017 T6 2l on 123k miles. Recently been into garage to have glow plugs and injector changed. Since I’ve had van back I’ve noticed the coolant level is going down in coolant bottle. I had no issue with level dropping previously. No obvious leaks. Will contact garage, but would they...

My t6 204 is slowly losing coolant (separate thread). One of the symptoms is that about half a dozen times the starter motor has struggled to turn the engine over. It turns over for a bit then freezes as if there isn’t enough power to turn the engine over. But battery and starter are strong...

I had a low coolant warning the other day, and the header tank was almost empty. There was no obvious signs of a leak, so I topped it up and checked the level over the next few drives (only short thankfully). As the level continued to drop, I’ve just taken the under tray off, to discover a small...

Coolant leak / Mystery. help!! SOS!! Hi everyone. Wondering if anyone can help please. I have a coolant leak / mystery. My van seems to be drinking coolant with no trace? Put approx ltr in a few weeks ago and just had to top it up as the light came on? Anyone else had a similar issue or...

Hello all, My t6 is passing coolant from the oil cooler, it looks to me like one of the seals/ O rings has failed. Does anyone have a diagram to make sure I order the correct part? Hopefully this will solve the issue as I don’t want to replace the full unit! Vin: VE1ZZZ7HZGH082433 Thanks a lot...

Have you had a leaking coolant issue resolved? Please use the poll to tell us what was the cause. If your resolution is not listed please add a reply and we'll add it to the list. Please not discuss you issues in this thread (they will get deleted, start a new topic in the appropriate area)

Looking for a bit of advice as have mystery coolant leak. 66Plate T6 SWB Shuttle 150 manual At approx 48700miles low coolant alarm went, topped up and drove home as no obvious leak. Was due timing belt (on basis of age) and water pump anyway so got this done at 48879. Garage couldn’t find a...