Replacing Front Valve Block

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.

For more information, see: → 4303AW SAFETY REQUIREMENTS FOR PORSCHE DYNAMIC CHASSIS CONTROL (PDCC) → 4303IN COMPONENT ARRANGEMENT FOR PORSCHE DYNAMIC CHASSIS CONTROL (PDCC)

If a component is replaced, the reservoir (PDCC) must always be replaced as well! → 430955 REPLACING RESERVOIR (PDCC)

The engine must be switched off. (The pressure in the PDCC system is high when the engine is running!).

Unclip the combination connector -arrow- .

Fig 1: Locating Combination Connector
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Disconnect the hydraulic connections (use a suitable collecting container). Seal the lines with suitable and clean (!) stoppers -arrows- .

Fig 2: Locating PDCC Lines
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Unscrew valve block fastening screws -arrows- and remove the valve block.

Fig 3: Locating Valve Block Mounting
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
When replacing the valve block wiring harness: Number the valves and pressure sensors (using a felt-tip pen, for example). Push back the insulator slightly and assign the cable colours to the corresponding valves/pressure sensors.
Remove the wiring harness. Pull off the connectors on the valves/pressure sensors. Fit the wiring harness onto the new valve block.
Installation is performed in reverse order. → General Warning Notes Observe correct tightening torques. → 4300TW TIGHTENING TORQUES