Heater Core Replacement

1. Disconnect the battery.

2. On the driver's side, remove the dash liner.

3. Displace and remove the footwell outlet duct.

4. Disconnect the connectors for the steering column control modules, fascia switch pack harnesses, and instrument pack harnesses.

5. Remove the nuts and bolts at the steering column lower mounting, and the nuts at the upper mounting. Partially lower the column, remove the cruise control module and then lower the column fully, providing a suitable support.

6. Remove the screws from the heater core clamps to the heater unit.

7. Disconnect the connector to the footwell vent servo motor harness.

8. Place suitable shop towels around the core supply and return joints to absorb any remaining coolant that will spill.

9. Remove the pipe clamps, disconnect the pipes and remove and discard the 0-rings. Install suitable blanking plugs in the supply and return pipes and in the core connections to prevent further spillage of remaining coolant.

10. Remove the securing screw and remove the heater core retaining plate.

11. Remove the heater core.

12. Install the replacement heater core, and reassemble in the reverse order of disassembly, paying particular care to lubricate and install the new 0-ring seals (supplied with the heater core assembly) to the heater supply and return pipe joints.

13. After reconnecting the battery, set the clock.