Coolant: Service and Repair

17 00 005 - Draining and adding coolant (M57T2)





Special tools required:
- 00 2 030 00 2 030 Universal Hydro-Lifter Basic Unit






Necessary preliminary tasks:
- Remove acoustic cover
- Remove intake manifold Service and Repair





Important!
Protect turbocharger against coolant.
Cover turbocharger with suitable apparatus (risk of damage).





Warning!
Danger of scalding!
Only carry out work on cooling system after engine has cooled down.





Protective measures/rules of conduct:
- Wear protective goggles
- Wear protective gloves
- Observe national/country-specific regulations






Important!
Risk of slipping due to coolant on the floor.
Danger of injury!

Catch and dispose of drained coolant in drip tray (1) and if necessary special tool 00 2 030 00 2 030 Universal Hydro-Lifter Basic Unit (universal hydraulic lifter).

Recycling:
Observe country-specific waste-disposal regulations.





Open cap (1) on coolant expansion tank (2).

Installation:
Close cap (1) until the arrow marks line up.





If fitted, slacken drain plug (1) on coolant radiator. On coolant radiators which do not have a drain plug, remove coolant hose.






Important!
Risk of damage!
Cover opening on turbocharger without fail.

Open drain plug (1) on engine block.

Installation:
Replace seal.
Tightening torque 11 11 5AZ 11 11 Engine Block.





Open vent screw (1).





Use only recommended coolant.
Observe filling capacities 17 00 Coolant, Cooling System Test.
Observe mixture ratio.

Note:
Adhere to the following work sequence when adding coolant.
- Switch ignition on
- Seat heating to maximum temperature and fan to low speed (heating valves are opened and auxiliary coolant pump starts up).
- Slowly fill expansion tank with coolant.
- Close vent screw after bubble-free coolant emerges or after filling up to max. cold fill level.
Vent cooling system 17 00 039 Venting Cooling System and Checking For Water Leaks.