Exhaust System: Locations

Exhaust Manifold, Front Exhaust Pipe With Three Way Catalytic Converter (TWC) And Attachments (vehicles With Engine Code BEV)







1. Heat shield
2. Heated Oxygen Sensor (HO2S) -G39-* bank 1, 50 Nm
- Heated Oxygen Sensor (HO2S) -G39-* bank 1, 50 Nm
- Only use "G 052 112 A3" to grease thread; do not let "G 052 112 A3" get onto slit of oxygen sensor
- Voltage supply of oxygen sensor heater via Fuel Pump (FP) relay -J17-
- Voltage supply of oxygen sensor heater via Fuel Pump (FP) relay -J17-
- Check Oxygen Sensor (O2S) and oxygen sensor control before Three Way Catalytic Converter (TWC)
3. Combination valve
4. 25 Nm
5. 25 Nm
- Always replace
6. 30 Nm
7. Heat shield
- Not installed
8. 30 Nm
9. Connection tube
10. Connecting piece, 35 Nm
11. Exhaust manifold
12. Gasket
- Always replace
13. Front exhaust pipe with catalytic converter
- Check catalytic converter
14. 10 Nm
15. Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-* bank 1, 50 Nm
- Component location: In rear catalytic converter
- Only use "G 052 112 A3" to grease thread; do not let "G 052 112 A3" get onto slit of oxygen sensor
- Voltage supply of oxygen sensor heater via Fuel Pump (FP) relay -J17-
- Check oxygen sensor heater for Oxygen Sensor (O2S) behind Three Way Catalytic Converter (TWC)
- Check Oxygen Sensor (O2S) and oxygen sensor control behind Three Way Catalytic Converter (TWC)
16. Heat shield
- For catalytic converter
17. Speed nut
18. Support ring
19. 25 Nm
20. 40 Nm
- Always replace
21. Gasket
- Always replace