Overview - Charge Air System, AUDI A3 From My 2021/Q2 From My 2016/Q3 From My 2019/TT From My 2015

• Before testing or performing a repair, check all air guide pipes and hoses and all vacuum lines for leaks.

Fig 1: Exploded View Of Charge Air System

Courtesy of AUDI OF AMERICA, LLC

1. Left Air Duct Pipe
   • Removing and Installing. Refer to LEFT AIR DUCT PIPE, REMOVING AND INSTALLING .
   • Must be free of oil and grease before installing
2. Grommet
3. Spacer Sleeve
4. Bolt
   • 7 Nm
5. Air Duct Hose
   • Installing. Refer to OVERVIEW - CHARGE AIR HOSE CONNECTIONS .
6. Air Duct
7. Charge Air Cooler
   • Removing and Installing. Refer to CHARGE AIR COOLER, REMOVING AND INSTALLING, AUDI A3 FROM MY 2021/Q2 FROM MY 2016/Q3 FROM MY 2019/TT FROM MY 2015 .
   • If there are small impressions on the fins, refer to RADIATOR AND CONDENSER ASSEMBLY .
8. Air Duct
9. Radiator Mount
   • For the charge air cooler

     Repair solution:

   • Thread grooving bolt
   • Position the bolt by hand and tighten it until it finds the old threads. Then tighten the bolt to the specification.
   • 5.5 Nm
10. Radiator Mount
    • For the charge air cooler
11. Bolt
    • 7 Nm
12. Spacer Sleeve
13. Grommet
14. Bolt
    • 5 Nm
15. Charge Air Pressure Sensor -G31-
    • Removing and Installing. Refer to Charge Air Pressure Sensor -G31-, REMOVING AND INSTALLING .
16. O-Ring
    • Replace if damaged or leaking
17. Air Duct Hose
    • Installing. Refer to OVERVIEW - CHARGE AIR HOSE CONNECTIONS .
18. Front Air Duct Pipe
    • Removing and Installing. Refer to FRONT AIR DUCT PIPE, REMOVING AND INSTALLING .
    • Must be free of oil and grease before installing