Just wanted to follow up. Took it the dealer. Later that day, they diagnosed the water pump failure, got my green light for repair under CPO warranty (with $50 deductible), and by the end of the same day the car was treated to a new thermostat/water pump. They recycled the coolant they drained and topped it off - a flush would have been extra. Service advisor said they pressure tested everything when I asked about the cap and everything passed. Let's hope this holds up!
When I was shopping around for cooling system replacement parts, I wasn't sure if GRAF or HEPU made a better metal-impellar water pump. I ended up purchasing both the GRAF and HEPU, and found the HEPU to have a better fit and finish compared to the GRAF.
My 2017 GTI SE also had a slight coolant smell but no visible leaks on the garage floor. When I brought it in for the 40K mile DSG transmission fluid service a couple of months ago, my dealer detected the leak from a defective water pump and replaced it under warranty.
I've had my mk6 for 5 years and driven it 50,000 miles (total 130,000) on the same water pump.
After wrapping up and turning it back on the CEL/MIL light comes on for Aux water pump and they replaced that too the next day.
My 2019 Tiguan SE 4motion with about 20,000 miles has been telling me to add coolant every few weeks. Today I dropped the car off at my local VW dealership stating I had a possible coolant leak. Just got a call from the service advisor saying hey will need to keep the car overnight bc they have to replace the waterpump!
I’m on my 2nd water pump, and it is starting to leak. I still need a third water pump.
Water pump 1 failed during the original warranty. Water pump 2 failed just outside of the new extended warranty for them I think I was at like 101,000 miles. Water pump 3 has now failed. I think im at like 110,000. Im really sick of being stranded in the middle of the night after work and Im sick of paying over $$$ for this obvious problem that everyone knows is a problem with these cars. I cant replace water pumps on average every 3 years. This isnt normal. Im 40 years old and have had many, many cars and 2 work trucks. I have never has a water pump fail on any car ever other than this one.
My 35K miles 2021 GTI has been loosing coolant for a few months now.
When doing your own maintenance, a problem may arise in the event of a recall. My application under the water pump recall for my previous Tiguan (1st Gen - PQ) was denied even though it was replaced at a VW dealer because I did not show "convincing evidence" of having followed the scheduled coolant maintenance despite including my aftermarket receipts with miles and dates.
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