Audi A6 Typ 4G: Adding coolant
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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.
- Switch the ignition off.
- Read the coolant level on the coolant expansion
tank
fig. 182. The coolant level
must be between the MIN and MAX markings
when the engine in cold. When the engine is
warm it can be slightly above the MAX marking.
Adding coolant
Requirement: there must be a residual amount of coolant in the expansion tank.
- Let the engine cool down.
- Place a cloth over the coolant expansion tank cap and unscrew the cap counterclockwise.
- Add coolant mixed in the correct ratio up to the MAX marking.
- Make sure that the fluid level remains stable.
Add more coolant if necessary.
- Close the cap securely.
Coolant loss usually indicates there is a leak. Immediately drive your vehicle to an authorized Audi dealer or authorized Audi Service Facility and have the cooling system inspected. If the cooling system is not leaking, a loss can come from the coolant boiling through overheating and being pushed out of the cooling system.
WARNING
- The cooling system is under pressure. Do not open the coolant expansion tank cap when the engine is hot. This increases the risk of burns.
- The coolant additive and the coolant can be dangerous to your health. For this reason, keep the coolant in the original container and away from children. There is a risk of poisoning.
- When working in the engine compartment, remember that the radiator fan can switch on even if the ignition is switched off, which increases the risk of injury.
Note
Do not add coolant if the expansion tank is empty. Air could enter the cooling system and damage the engine. If this is the case, do not continue driving. See an authorized Audi dealer or authorized Audi Service Facility for assistance.
