Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Reassembly

REASSEMBLY

PROCEDURE

1. INSTALL NO. 2 AIR CONDITIONING HARNESS ASSEMBLY

(a) Engage the 2 claws to install the No. 2 air conditioning harness assembly.

2. INSTALL REAR EVAPORATOR SUB-ASSEMBLY

(a) Install the rear evaporator sub-assembly as shown in the illustration.

Install 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.

(b) Install the rear cooling unit cover LH to the rear cooling unit cover RH with the 12 screws.

(c) Engage each clamp.

3. INSTALL HEATER RADIATOR UNIT SUB-ASSEMBLY

(a) Install the heater radiator unit sub-assembly.

Install in this Direction

4. INSTALL COOLER UNIT CLAMP

(a) Install the cooler unit clamp with the 2 screws.

5. INSTALL NO. 3 COOLING UNIT BRACKET

(a) Install the No. 3 cooling unit bracket with the 2 screws.

6. INSTALL NO. 2 COOLING UNIT BRACKET

(a) Install the No. 2 cooling unit bracket with the 2 screws.

7. INSTALL NO. 1 COOLING UNIT BRACKET

(a) Install the No. 1 cooling unit bracket with the 3 screws.

8. INSTALL REAR COOLING UNIT EXPANSION VALVE

(a) Remove the vinyl tape from the rear cooling unit expansion valve and rear evaporator sub-assembly.

(b) Sufficiently apply compressor oil to 2 new O-rings and the fitting surfaces of the rear cooling unit expansion valve.

Compressor Oil:

ND-OIL 12 or equivalent

(c) Install the 2 O-rings to the air conditioner tube and accessory assembly.

NOTICE:

Keep the O-rings and O-ring fitting surface free of foreign matter.

(d) Using a 4 mm hexagon socket wrench, install the rear cooling unit expansion valve with the 2 hexagon bolts. Torque: 3.5 N·m {36 kgf·cm, 31 in·lbf}

(e) Install the grommet.

(f) Engage the 3 claws to install the plate.

9. INSTALL REAR NO. 1 COOLING UNIT DAMPER SERVO SUB-ASSEMBLY

(a) Using the reference points, install the rear No. 1 cooling damper servo sub-assembly with the 2 screws.

*a Reference Point

(b) Connect the connector.

10. INSTALL REAR NO. 2 COOLING UNIT DAMPER SERVO SUB-ASSEMBLY

(a) Using the reference points, install the rear No. 2 cooling damper servo sub-assembly with the 2 screws.

*a Reference Point

(b) Connect the connector.

11. INSTALL BLOWER MOTOR CONTROL

(a) Install the blower motor control with the 2 screws.

12. INSTALL REAR BLOWER MOTOR WITH FAN SUB-ASSEMBLY

(a) Install the rear blower motor with fan sub-assembly with the 3 screws. NOTICE: Replace the rear blower motor with fan sub-assembly if it has been dropped or subjected to a severe impact.