Got a 3.0 TDI Gen2 coolant leak? It's a well-known issue with these engines, so let's look at what causes it.
What causes a 3.0 TDI Gen2 coolant leak?
The problem lies in the vacuum-operated valve that controls additional coolant circulation under different engine operating conditions. The valve is made of plastic, and prolonged exposure to high temperatures eventually causes it to deteriorate.
How long does the valve last?
Around 100,000 km.
What else needs attention during the repair?
The valve sits right at the bottom of the engine's V, which means removing all the surrounding components to access it. Everything is then thoroughly cleaned, new gaskets and O-rings are fitted, and the components are reassembled with the new valve in place.
Warranty for private customers – 2 years.