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Heater/ventilation components - removal and refitting
Cooling, heating, and air conditioning systems / Heater/ventilation components - removal and refitting


Heater blower motor
Removal
1 Disconnect the battery negative (earth) lead (see Chapter 5, Section 1).

2 Release the four clips (by pulling them out) securing the passenger side footwell upper trim panel, then withdraw the panel.

3 Unplug the motors electrical connector.

4 Lift the motors retaining lug slightly, twist the motor anti-clockwise (seen from beneath) through approximately 30, then withdraw the assembly.

5 The motors control resistor can be removed by sliding a slim screwdriver into the slot provided in one end. Press the screwdriver in approximately 5 mm against spring pressure, and prise the resistor out (see illustration).

9.5 Heater blower motor control resistor can be prised out of heater unit
9.5 Heater blower motor control resistor can be prised out of heater unit

Refitting
6 Refitting is the reverse of the removal procedure. Refit the motor, and twist it clockwise until the retaining lug engages securely (see illustration).

9.6 Ensure blower motor retaining lug arrowed) engages securely in heater
9.6 Ensure blower motor retaining lug arrowed) engages securely in heater unit on reassembly

Heater matrix
Removal
7 Disconnect the battery negative (earth) lead (see Chapter 5, Section 1).

8 Drain the cooling system (see Chapter 1).

9 Disconnect the coolant hoses from the heater matrix unions protruding through the engine compartment bulkhead (see illustrations).

9.9A Coolant pipes to heater matrix must be disconnected . . .
9.9A Coolant pipes to heater matrix must be disconnected . . .

9.9B . . . but can be reached best from beneath vehicle (arrowed)
9.9B . . . but can be reached best from beneath vehicle (arrowed)

10 Working inside the passenger compartment, remove the trim panels from each footwell, just in front of the centre console. Each panel is secured by two screws. If additional clearance is required, the centre console can be removed as well (see Chapter 11), but this is not essential.

11 Remove the single screw to release the air duct in the base of the heater unit (see illustration).

9.11 Remove screw to allow air duct to be retracted into air distributor at
9.11 Remove screw to allow air duct to be retracted into air distributor at base of heater unit . . .

12 Remove the three Torx-type screws (size T20) securing the air distributor to the heater unit bottom cover, then release the clips.

There is a single plastic clip on each side, and additional metal clips may be found. Push the duct up to retract it, and withdraw the air distributor (see illustration).

9.12 . . . release clips (A) to free air distributor from base of heater unit
9.12 . . . release clips (A) to free air distributor from base of heater unit - note clips (B) securing . . .

13 Release the clips - there are two plastic clips on each side, and additional metal clips may be found - then withdraw the heater units bottom cover, complete with the matrix (see illustration).

9.13 . . . heater units bottom cover, complete with matrix
9.13 . . . heater units bottom cover, complete with matrix

14 Undo the screw and withdraw the clamp to separate the matrix from the bottom cover (see illustration).

9.14 Remove clamp (one screw) to separate matrix from heater units bottom
9.14 Remove clamp (one screw) to separate matrix from heater units bottom cover

Refitting
15 Refitting is the reverse of the removal procedure. Additional metal clips may be required to secure the heater units bottom cover and the air distributor. Ensure that the duct is lowered from the air distributor and secured with its screw.

16 Refill the cooling system with the proper mixture of antifreeze and water (see Chapter 1). Start the engine and allow it to reach normal operating temperature, indicated by the radiator top hose becoming hot. Recheck the coolant level and add more if required, then check for leaks. Check the operation of the heater.

Pollen filter
17 Refer to Chapter 1.


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