Filling Air In Air Suspension System

Information 

Preconditions for filling an air spring/the air suspension system

• Vehicle raised on a lifting platform, wheels freely suspended  .
• All components of the system installed and connected  .
• The rear air spring must not be hanging freely over the lower trailing arm  .

1. Applies only to rear air spring:  Lift lower trailing arm before filling it and align the air spring in the lower trailing arm.

   > 434319 REMOVING AND INSTALLING AIR BELLOWS .

   1. 1.1 Position the air suspension bellows -1-  so that the cable -2-  on the electric plug connection is located in the recess -3-  on the trailing arm.

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Alignment of air spring bellows in lower trailing arm

   2. 1.2 Check that the air spring in the lower trailing arm -2-  is aligned correctly and re-align if necessary. Air spring bellows -1-  must be resting on the lower trailing arm -Arrow-  .

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Air suspension bellows in lower trailing arm

2. Fill air into air suspension system.
   1. 2.1 Connect the PIWIS Tester  to the vehicle and switch it on.
   2. 2.2 Establish operational readiness/switch on ignition.
   3. 2.3 Start diagnostics.
   4. 2.4 Select "Chassis control"  control unit.
   5. 2.5 Select the "Maintenance/repairs"  tab.
   6. 2.6 Select the menu item "Replacement work on the air spring system"  and press F12 to continue.
   7. 2.7 Select the "Bleeding and filling the entire air spring system"  function and press F12 to continue.
   8. 2.8 Select the "Filling air springs"  function and press F12 to continue.
   9. 2.9 Follow the instructions on the Tester.