2. Disconnect the heater valve cable from the valve. Loosen the two lower mounting nuts.
4. On push-button heaters, disconnect the cooling fan cable from the heater. On lever-type heaters, disconnect the cable for switching the operating mode and the cable for the air mixer.
5. Remove the dashboard.
6. Disconnect the heater sleeves.
7. On push-button heaters, disconnect the air mixer cable from the heater and the wire harness from the connector.
8. Unscrew the heater bolts and set the heater away from the mountings.
9. Assembly takes place in the reverse order. Pay attention to the following points:
- a. Use grease on all O-rings.
- b. Check the position of the inlet and outlet hoses in relation to the heater to make sure they are not mixed up. Install the clips in the correct positions and make sure they are securely fastened.
- c. Fill and bleed the cooling system using the bleed bolt.
- d. Make sure the cables opening/closing the flaps are securely connected for the flaps to function properly.