Check the Coolant Level
WARNING: This page is about a different car, the 2018 Audi S6, 2017 Audi S6, and 2016 Audi S6. However, it is still accessible from the selected car via links, so may be relevant.
-- Checking the coolant level.
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- The coolant level must be at that MAX marking when the engine is cold.
- Coolant level may be above MAX marking with engine at operating temperature.
-- Complete re-assembly.