2003 LEXUS LS430 Factory Repair Manual

Page 4233 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 47: Removing Air Vent Duct 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
b. Remove the 5 screws.

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LEXUS LS430 2003  Factory Repair Manual Fig. 48: Removing Heater Case Sub-Assy Screws 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
c. Usin
g a screwdriver, release the 2 claws and remove the heater case sub-assy.

Page 4235 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 49: Removing Heater Case Sub-Assy 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
18.REMOVE COOLER EXPANSION VALVE 
a. Using a hexagon wrench 5 mm (0.20 in.), remove the 2 hexagon bolts and air co

Page 4236 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 50: Removing Hexagon Bolts (1 Of 2) 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
b. Remove the 2 O-rings from the air conditioning tube assy.  
c. Using a hexagon wrench 5 mm (0.20 in.), remove

Page 4237 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 51: Removing Hexagon Bolts (2 Of 2) 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
19.REMOVE COOLER EVAPORATOR SUB-ASSY NO. 1 
a. Remove the 6 screws and evaporator cover.  
b. Pull out the evapo

Page 4238 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 52: Removing Evaporator Cover 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
20.REMOVE EVAPORATOR TEMPERATURE SENSOR  
21.REMOVE HEATER RADIATOR UNIT SUB-ASSY 
a. Remove the screw and clamp.  
b.

Page 4239 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 53: Removing Heater Radiator Unit Sub-Assy 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
22.REMOVE WATER VALVE CONTROL SERVOMOTOR 
a. Disconnect the connector.  
b. Disconnect the control cable.

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LEXUS LS430 2003  Factory Repair Manual Fig. 54: Removing Water Valve Control Servomotor 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
23.REMOVE COOL AIR BYPASS SERVOMOTOR 
a. Remove the 3 screws and cool air bypass servomotor.  
b.Employ