Left Primary Catalytic Converter

Left Primary Catalytic Converter

Removing

- On a vehicle with air suspension, activate vehicle lift mode.

• All cable ties opened or cut during engine removal must be reinstalled at the same locations during installation.

- Pull rear engine cover off - arrows -.





- Pull front engine cover off - arrows -.





- Disconnect electrical connector - 2 - at Mass Air Flow (MAF) sensor 2 (G246).





- Remove left air guide hose - 1 - from air duct.

- Release retaining clips - 3 - and remove upper left section of air filter housing.

- Disconnect hose - 1 - to Secondary Air Injection (AIR) pump.





- Disconnect electrical harness connector - 4 - at Mass Air Flow (MAF) Sensor (G70).

- Remove right air guide hose - 3 - from air duct.

- Release retaining clips - 2 - and remove upper right section of air filter housing from lower section.

Vehicles with air suspension:





• If necessary, remove electrical connector for Heated Oxygen Sensor (HO2S) 2 (G108) from bracket at right strut tower for better access.

- Press circlip - 1 - forward from hose coupling.

- Press release ring - 2 - down - arrows - and remove vent hose - 3 - from upper part of air filter.

All Vehicles

- Disconnect vacuum hose - 2 - to Evaporative Emission (EVAP) canister purge regulator valve (N80) by pressing release button.





- Free up vacuum hose.

• Ignore - 1 - and - 3 -.

- Disconnect electrical harness connector - 2 - from Evaporative Emission (EVAP) canister purge regulator valve (N80).





- Remove Evaporative Emission (EVAP) canister purge regulator valve (N80) - 1 - from bracket and lay aside.

• Ignore - 3 -.

- Disconnect the vacuum hose - 4 -.





Risk of violating emissions legislation.

• Do not open hose connection - 2 -!

- Lay the air guide hose aside with the vacuum hose connected.

- Loosen hose clamp - 1 - and remove bolts - 3 -.

- Remove air guide pipe to right.

- Remove electrical connectors - 3 - for Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) (G131) and - 4 - for Heated Oxygen Sensor (HO2S) 2 (G108) from bracket on right strut tower.





- Disconnect electrical connections and free up electrical wiring to Heated Oxygen Sensor (HO2S) 2 (G108) and Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) (G131).

- Remove screws and remove front - 1 - and rear - 2 - noise insulation.





- Remove bracket for noise insulation - arrows -.





Danger of damaging the decoupling element.

• Decoupling element must not be bent more than 10°.

• Do not load decoupling element on cable.

• Do not damage wire mesh at decoupling element.

- Separate exhaust system at clamping sleeve - 1 -.





• Ignore - 2 -.

- Remove left main catalytic converter bracket bolts - 1 - and - 2 -.





- Remove nuts - arrows - and remove left main catalytic converter.

- Remove bolts - 1 - and - 2 - and remove left primary catalytic converter strap.





- Remove nuts - 1 to 3 - and remove left primary catalytic converter.





Installing

• Tightening specifications, refer to => [ Exhaust System Assembly Overview ] Exhaust System Assembly Overview.

Installation is in reverse order of removal, note the following:

• Replace gaskets and self-locking nuts.

• Secure all hose connections with hose clamps appropriate for the model.

• During installation, all cable ties must be installed at the same location.

- Align exhaust system free of tension. Refer to => [ Exhaust System, Installing ] Exhaust System, Installing.

- On a vehicle with air suspension, deactivate vehicle lift mode.