Coolant: Service and Repair

17 00 005 Draining and topping up coolant (N12, N16)

Special tools required:







WARNING:
Risk of scalding.
This repair work on the cooling system should only be carried out on an engine that has cooled down.







IMPORTANT: Wear protective gloves and safety goggles.







IMPORTANT: For dirt contamination of the cooling system (e.g. by engine oil), the cooling system must be rinsed with water until all dirt contamination is removed.







Necessary preliminary tasks:
Follow notes for carrying out repair work on the cooling system .
After adding coolant, check cooling system for water leaks.







Draining coolant:
Unscrew sealing cap (1) on coolant expansion tank.







Release spring strap on lower coolant hose (1) with special tool 17 2 051.
Detach coolant hose (1). Drain, catch and dispose of coolant.







Observe capacities.
Observe mixture ratio.
Fill and bleed cooling system.
Check cooling system for leaks.