Expansion tank
| Expansion tank | 
| 
 | |||||||||||||
| To remove | 
| 1. | Undo the expansion tank cap to release pressure and then retighten the cap. | |
| 2. | Unplug the connector for the level sensor.   | |
| 3. | Undo the expansion tank and lift it up. Detach the ventilation hoses and move them away so they do not leak coolant. | |
| 4. | Fit
        
         30 07 739 Hose pinch-off pliers
        
        on the thick hose fastened to the bottom of the expansion tank. The pliers must be applied as close to the expansion tank as possible.   | |
| 5. | Move aside the expansion tank so that the ventilation connections are pointing up. | |
| 6. | Detach the thick hose from the expansion tank. | |
| 7. | Remove the expansion tank and drain the coolant into a receptacle. | |
| To fit | 
| 1. | Connect the thick hose to the expansion tank without tightening the hose clip.   | |
| 2. | Fit the expansion tank to its bracket on the body. Adjust the thick hose and fit the hose clip. | |
| 3. | Remove the hose pinch-off pliers. | |
| 4. | Plug in the level sensor connector. | |
| 5. | Fit the ventilation hoses. | |
| 6. | Fill with
        
         40 - 93 170 402 Coolant
        
        to the correct level. | |
| 7. | Start the engine and inspect the cooling system for leaks. | |

 Warning
                Warning
                
		