Audi A6 Owners & Service Manuals
Audi A6 Typ 4G (2011–2018) Owner's Manual / Maintenance and Care / Checking and Filling / Cooling system

Audi A6 Typ 4G: Cooling system

Coolant

The engine cooling system is filled with a mixture of purified water and coolant additive at the factory.

This coolant must not be not changed.

The coolant level is monitored through the indicator light. However, we do recommend occasionally checking the coolant level manually.

If you must add coolant, use a mixture of water and coolant additive. Mixing the coolant additive with distilled water is recommended.

Coolant additive

The coolant additive is made of anti-freezing and corrosion protection agents. Only use the following coolant additives. These additives may be mixed with each other.

Checking and Filling

The amount of coolant additive that needs to be mixed with water depends on the climate where the vehicle will be operated. If the coolant additive percentage is too low, the coolant can freeze and damage the engine.

Checking and Filling

Note

  • Before the start of winter, have your authorized Audi dealer or authorized Audi Service Facility check if the coolant additive in your vehicle matches the percentage appropriate for the climate. This is especially important when driving in colder climates.
  • If the appropriate coolant additive is not available in an emergency, do not add any other additive. You could damage the engine.

    If this happens, only use water and restore the correct mixture ratio with the specified coolant additive as soon as possible.

  • Only refill with new coolant.
  • Radiator sealant must not be mixed with the coolant.

    READ NEXT:

     Adding coolant

    Fig. 184 Engine compartment: coolant expansion tank cover Observe the safety precautions in Working in the engine compartment. Checking the engine coolant level Park the vehicle on a level surface.

     Brake fluid

    Fig. 185 Engine compartment: cap on brake fluid reservoir Observe the safety precautions in Working in the engine compartment. Checking the brake fluid level Read the brake fluid level on the brak

     Battery

    General warnings about batteries Because of the complex power supply, all work on batteries such as disconnecting, replacing, etc. should only be performed by an authorized Audi dealer or authorized A

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