Instruction book Audi R8 Version year 2015
►Audi R8 Coupé ►Service and ca... ►Checking and ... ◀Cooling sys...
Fig. 163 Engine compartment: Markings on coolant expansion tank
Fig. 163 Engine compartment: Markings on coolant expansion tank
Checking coolant level
Park your vehicle on a level surface.
Switch off the ignition.
Wait for the engine to cool down.
Cover the cap on the expansion tank with a cloth, and carefully unscrew the cap anti-clockwise ►.
Read off the coolant level using the dipstick. When the engine is cold, the dipstick should be protruding approx. 1 cm beyond the edge of the coolant expansion tank.
Topping up coolant
Add coolant in the correct concentration link►.
You should make sure that the fluid level remains stable. If necessary, add more coolant.
Screw the cap on again tightly.
Any loss of coolant normally indicates a leak in the cooling system. Drive to a qualified workshop without delay and have the cooling system checked. If there are no leaks in the system, a loss of coolant can only occur if the coolant boils and is forced out of the system as a result of overheating.
WARNING
  • The cooling system is under pressure. Do not unscrew the cap on the expansion tank when the engine is hot: you could be scalded by escaping steam.
  • The coolant and coolant additive can be a health hazard. Store the coolant additive in the original container in a safe place out of reach of children – risk of poisoning.
  • When working in the engine compartment be aware that the radiator fan may start running suddenly, even if the ignition is switched off – risk of injury!
CAUTION
Do not add coolant if the expansion tank is empty. Air could have got into the cooling system - risk of engine damage! In this case, do NOT drive on. Obtain professional assistance.

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