Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: Disassembly

DISASSEMBLY

PROCEDURE

1. REMOVE REAR BLOWER MOTOR WITH FAN SUB-ASSEMBLY

(a) Remove the 3 screws and rear blower motor with fan sub-assembly.

2. REMOVE BLOWER MOTOR CONTROL

(a) Remove the 2 screws and blower motor control.

3. REMOVE REAR NO. 2 COOLING UNIT DAMPER SERVO SUB-ASSEMBLY

(a) Disconnect the connector.

(b) Remove the 2 screws and rear No. 2 cooler unit damper servo sub-assembly.

4. REMOVE REAR NO. 1 COOLING UNIT DAMPER SERVO SUB-ASSEMBLY

(a) Disconnect the connector.

(b) Remove the 2 screws and rear No. 1 cooler unit damper servo sub-assembly.

5. REMOVE REAR COOLING UNIT EXPANSION VALVE

(a) Disengage the 3 claws to remove the plate.

(b) Remove the grommet.

(c) Using a 4 mm hexagon socket wrench, remove the 2 hexagon bolts and rear cooling unit expansion valve.

(d) Remove the 2 O-rings from the rear evaporator sub-assembly.

NOTICE:

Seal the openings of the disconnected parts using vinyl tape to prevent entry of moisture and foreign matter.

6. REMOVE NO. 1 COOLING UNIT BRACKET

(a) Remove the 3 screws and No. 1 cooling unit bracket.

7. REMOVE NO. 2 COOLING UNIT BRACKET

(a) Remove the 2 screws and No. 2 cooling unit bracket.

8. REMOVE NO. 3 COOLING UNIT BRACKET

(a) Remove the 2 screws and No. 3 cooling unit bracket.

9. REMOVE COOLER UNIT CLAMP

(a) Remove the 2 screws and cooler unit clamp.

10. REMOVE HEATER RADIATOR UNIT SUB-ASSEMBLY

(a) Remove the heater radiator unit sub-assembly as shown in the illustration.

Remove in this Direction

NOTICE:

Prepare a drain pan or cloth in case the coolant leaks.

11. REMOVE REAR EVAPORATOR SUB-ASSEMBLY

(a) Disengage each clamp.

(b) Remove the 12 screws and rear cooling unit cover LH from the rear cooling unit cover RH.

(c) Remove the rear evaporator sub-assembly as shown in the illustration.

Remove in this Direction

NOTICE:

When the rear evaporator sub-assembly is removed, make sure to install a new one. The rear evaporator sub-assembly cannot be reused.

12. REMOVE NO. 2 AIR CONDITIONING HARNESS ASSEMBLY

(a) Disengage the 2 claws to remove the No. 2 air conditioning harness assembly.