Porsche Cayenne Turbo Driver Manual page 265

Checking the coolant level when a warning
message is shown on the multi-purpose
display of the instrument panel
Warning!
Risk of scalding from hot coolant.
f Take great care when opening the cap of the
expansion tank when the engine is hot.
1. Remove cover.
2. If the engine is hot, cover the expansion tank
cap with a cloth.
Open cap carefully and allow any overpressure
to escape.
Then unscrew cap completely.
3. Read the coolant level.
Top up with coolant if necessary.
Only add a mixture of antifreeze and water in
equal parts.
Antifreeze share in coolant:
50 % provides antifreeze protection down to
–35 °C.
Do not exceed the max. mark.
Note on operation
f If the coolant level exceeds the max. mark
when the engine is hot, check the coolant level
again when the engine is cold.
4. Screw the cap closed firmly and put on the
cover.
5. Have the cooling system checked.
Consult a qualified specialist workshop. We
recommend that you use a Porsche partner for
this work since these are staffed with trained
personnel and have the necessary parts and
tools.
Maintenance notes
If pure water is added in an emergency, the mixing
ratio will have to be corrected.
Marked loss of coolant indicates leakage in the
cooling system.
f The cause must be eliminated without delay.
Consult a qualified specialist workshop. We
recommend that you use a Porsche partner for
this work since these are staffed with trained
personnel and have the necessary parts and
tools.
Radiator fans
The radiators and radiator fans are in the front of
the vehicle.
Warning!
Risk of injury. The fans can start running as
a function of temperature, even with the
engine switched off.
f Exercise extreme caution when working in the
area of the radiator fans.
Maintenance and Car Care
265