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The Radiator and Cooling Circuit Problem in VAG Group Cars

Model: (Various brands) Various
Part: Air conditioner

Video tutorial

In this video, see how to resolve a problem affecting many VAG group cars, such as the Audi A3, Q2, or Volkswagen Golf, where the cooling and/or heating circuit can easily become blocked due to the many non-return valves throughout the system (for example, the Golf in the video has seven).

If these valves are blocked, they can even prevent the normal bleeding of the system, so they must be checked one by one. If they are no longer efficient, they should be replaced along with the piping, after which the system can be bled and will function optimally again.


Updated on 5 September 2026 by ScegliAuto


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Watch the video!


by ScegliAuto

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