Heated oxygen sensor, lower 4WD (593), B207
| Heated oxygen sensor, lower 4WD (593), B207 | 
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| To remove | 
| 1. | Unplug the connector (A) for the oxygen sensor and carefully lower the cable.   | |
| 2. | Raise the car. | |
| 3. | Remove the lower turbocharger pressure pipe (B).   | |
| 4. | Route the cable forward and remove the oxygen sensor (C).   | |
| To fit | 
| 1. | Lubricate the threads sparingly with
        
         90 513 210 Universal paste
        
        and fit the oxygen sensor (C). Tightening torque 40 Nm (30 lbf ft). 
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| 2. | Lift up the oxygen sensor cable, making sure it does not get pinched or is exerted to chafing. | |
| 3. | Fit the turbocharger delivery pipe (B). Tightening torque 22 Nm (16 lbf ft)   | |
| 4. | Lower the car. | |
| 5. | Plug in the oxygen sensor connector and secure it (A).   | |

 Warning
                Warning
                
		