Overview - Air Lines

Fig 1: Identifying Air Lines

Courtesy of AUDI OF AMERICA, LLC

1. "Yellow" Air Line
   • Connecting piece tightening specification 5.5 Nm
   • Replace the O-ring after removing
   • To the right pressure reservoir
2. "Purple" Air Line
   • Connecting piece tightening specification 5.5 Nm
   • Replace the O-ring after removing
   • From the solenoid valve
3. Air Line
   • Connecting piece tightening specification: 2.3 Nm
   • Replace the O-ring after removing
   • From the solenoid valve
     • Left "red"
     • Right "green"
   • Routing. Refer to Fig 2.
4. Air Line
   • Connecting piece tightening specification: 2.7 Nm
   • Replace the O-ring after removing
   • From the solenoid valve
     • Left "black"
     • Right "blue"
5. "Yellow" Air Line
   • Connecting piece tightening specification 5.5 Nm
   • Replace the O-ring after removing
   • From the left pressure reservoir
6. "Brown" Air Line
   • Connecting piece tightening specification 3.5 Nm
   • Replace the O-ring after removing
   • From the air supply unit
7. "Green" Air Line
   • Connector tightening specification 2 Nm
   • Replace the O-ring after removing
   • To the right front air spring
8. "Blue" Air Line
   • Connector tightening specification 2 Nm
   • Replace the O-ring after removing
   • To the right rear air spring
9. "Black" Air Line
   • Connector tightening specification 2 Nm
   • Replace the O-ring after removing
   • To the left rear air spring
10. "Purple" Air Line
    • Connecting piece tightening specification 3.5 Nm
    • Replace the O-ring after removing
    • To the left pressure reservoir
11. "Red" Air Line
    • Connector tightening specification 2 Nm
    • Replace the O-ring after removing
    • To the left front air spring

Air Line Routing to the Front Air Spring

Fig 2: Air Line Routing to the Front Air Spring

Courtesy of AUDI OF AMERICA, LLC

-- Connect the air line -2- in the wiring harness -5- using the clip -4-.

1 -

Residual Pressure Retaining Valve - Do Not Loosen

3 -

Front Air Spring