Heated oxygen sensor, lower (593), B207
| Heated oxygen sensor, lower (593), B207 | 
| 
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| To remove | 
| 1. | Unplug the connector for the oxygen sensor and carefully lower the cable.   | |
| 2. | Raise the car.
        
         CV:
        
        Remove
        
         Chassis reinforcement, front supporting frame, CV | |
| 3. | Remove the lower turbocharger pressure pipe.   | |
| 4. | Bend out the corner of the heat shield slightly.   | |
| 5. | Run the cable forward and remove the oxygen sensor.   | |
| To fit | 
| 1. | Lubricate the threads sparingly with
        
         30 20 971 Screw-thread paste
        
        and fit the oxygen sensor.   Tightening torque 40 Nm (30 lbf ft). | |
| 2. | Check that the cables are NOT twisted or damaged. Bend back the corner of the heat shield.   | |
| 3. | Lift up the oxygen sensor cable, making sure it does not get pinched or is exerted to chafing. | |
| 4. | Fit the turbocharger delivery pipe.
        
         CV:
        
        Fit
        
         Chassis reinforcement, front supporting frame, CV   Tightening torque 22 Nm (16 lbf ft) | |
| 5. | Lower the car. | |
| 6. | Plug in the oxygen sensor connector and secure it.   | |

 Warning
                Warning
                
		