Checking For Coolant Leaks

WARNING: This page is about a different car, the 2010 Porsche Cayenne, 2009 Porsche Cayenne, and 2008 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.

Remove maintenance flap over the coolant expansion tank.

Fig 1: Removing Maintenance Cover
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Check the cooling system for leaks. To do this, apply a test pressure of approx. 1.5 bar using the cooling system test device. → The pressure must not drop.

Fig 2: Identifying Cooling System Test Device
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Check the coolant level. A graduated disc with a "min" and "max" marking is located in the opening of the expansion tank. The "min" level must be covered with coolant.

Fig 3: Identifying Graduated Disc In Opening Of Expansion Tank
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Screw cap back on the coolant expansion tank.

Fig 4: Identifying Coolant Expansion Tank Cap
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Close the maintenance flap.
Check radiator for external dirt. The radiators should not be excessively dirty. If necessary, they can be cleaned using a vacuum cleaner with a brush attachment.