Draining and Topping Up Coolant

Draining and topping up coolant

Warning! Danger of scalding!
Only perform these tasks on an engine that has cooled down.

Recycling
Catch and dispose of drained coolant. Observe country-specific waste-disposal regulations.

Draining coolant:






Open cap on coolant expansion tank.
Slacken vent screw (1) on coolant expansion tank.

Remove underbody protection.






Open drain plug at bottom of radiator.
Drain, catch and dispose of coolant.

Installation:

Replace seal.






Open drain plug on right of engine block.
Drain, catch and dispose of coolant.

Installation:

Replace seal.
Tightening torque, refer to Cooling System - Specifications - Mechanical Mechanical Specifications

Adding coolant:

Note: The tank mark indicates the fluid level at approx. 20±C.

Use only recommended coolant.

1. Turn on ignition.
2. Set heating controller to maximum temperature
3. Set fan to low setting. This opens the heating valves and starts the auxiliary water pump.
4. Perform filling operation slowly.
5. Top up coolant expansion tank up to max. cold fill level.
6. Close vent plug when bubble-free coolant emerges
7. Close coolant expansion tank.

Vent cooling system and check for leaks.