coolant reservoir LEXUS LS430 2003 Factory Repair Manual

psi), and check that the pressure does not drop.
If the pressure drops, check the hoses, radiator and water pump for leaks. If no external leaks are found,
check the heater core, cylinder block and head.
2.CHECK ENGINE COOLANT LEVEL AT RESERVOIR
a. Check that the engine coolant level is between the LOW and FULL lines when the engine is cold.
If the engine coolant is low, check for leaks and add "TOYOTA Super Long Life Coolant" to the
FULL line.
If "TOYOTA Super Long Life Coolant" is not available, use a similar high quality ethylene glycol
based non-silicate, non-amino, non-nitrite and non-borate coolant with long-life hybrid organic acid
technology. Do not substitute plain water for engine coolant.
3.CHECK ENGINE COOLANT QUALITY
a. Remove the radiator cap.
b. Check if there are any excessive deposits of rust or scale around the radiator cap and radiator filler
hole, Also, the coolant should be free from oil.
HINT:
If excessively dirty, clean the coolant passage and replace the coolant.
c. Reinstall the radiator cap.
INSPECTION
1. INSPECT THERMOSTAT
HINT:
The thermostat is stamped with the valve openin
g temperature.

Fig. 11: Measuring resistance of switch
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
REPLACEMENT
1.REMOVE V-BANK COVER
2.REMOVE AIR CLEANER INLET NO.1 (See REPLACEMENT
)
3.DRAIN ENGINE COOLANT
a. Remove the 2 radiator caps from the radiator reservoir and radiator.
b. Loosen the radiator drain plug and 2 drain cock plugs, then drain the coolant.

recommended.
<003200450056004800550059004800030057004b00480003004600520052004f0044005100570003004f004800590048004f0003004c00510056004c0047004800030057004b00480003005500440047004c004400570052005500030045005c0003005300
55004800560056004c0051004a00030057004b00480003004c[nlet and outlet radiator hoses
several times by hand. If the coolant level drops, add coolant.
Fig. 13: Adding Engine Coolant

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
b. Slowly pour coolant into the radiator reservoir until it reaches the FULL line.
c. Install the radiator caps to the radiator and radiator reservoir.
d. Bleed the cooling system.
Start the engine, and open the heater water valve.
<00300044004c005100570044004c005100030057004b0048000300480051004a004c0051004800030056005300480048004700030044005700030015000f00130013001300030057005200030015000f001800130013000300350033003000030044005100
470003005a00440055005000030058005300030057004b0048[ engine.
e. Stop the engine, and wait until the engine coolant cools down.
f. Add coolant to the FULL line for the radiator and reservoir.

Fig. 14: Adding Coolant To Full Line For Radiator And Reservoir
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
5.CHECK FOR ENGINE COOLANT LEAKS
6.INSTALL AIR CLEANER INLET NO.1 (See REPLACEMENT
)
7.INSTALL V-BANK COVER
COMPONENTS

13.REMOVE FAN ASSY
a. Disconnect the radiator reservoir hose from the radiator.
b. Remove the 6 bolts and fan.
14.INSTALL FAN ASSY
a. Install the fan with the 6 bolts.
Torque: 5.0 Nm (51 kgfcm, 44 in.lbf)
b. Connect the radiator reservoir hose to the radiator.
15.INSTALL RADIATOR AND FAN ASSEMBLY
a. Install the 2 radiator lower supports to the radiator.
b. Attach the 2 radiator lower supports on the radiator to the body bracket.
c. Install the radiator and fan assembly with the 2 radiator upper supports and 2 nuts.
Torque: 13.5 N m (138 kgf cm, 10 ft lbf)
d. Connect the cooling fan ECU connector.
16.INSTALL AIR CLEANER ASSY
17.INSTALL AIR CLEANER INLET NO.1
18.REFILL ENGINE COOLANT (See REPLACEMENT
)
19.CHECK FOR ENGINE COOLANT LEAKS
20.INSTALL ENGINE UNDER COVER NO.1
21.CONNECT BATTERY NEGATIVE TERMINAL
OVERHAUL
1.REMOVE PACKING
2.REMOVE RADIATOR CAP SUB-ASSY
3.REMOVE DRAIN PLUG
a. Remove the drain plug.
b. Remove the O-ring.
4.ASSEMBLE SST
SST 09230-01010
a. Install the claw to the overhaul handle, inserting it in the hole in part A as shown in the illustration
b. While gripping the handle, adjust the stopper bolt so that dimension B is as shown in the
illustration.

GENERAL MOTORS
GENERAL MOTORS - DOMESTIC LIGHT TRUCKS & VANS
ACURA
ACURA - IMPORTED CARS & TRUCKS
All OthersUnder Left Side Of Dash
1997-98
DieselUnder Left Side Of Dash
All OthersLeft Front Corner Of Engine Compartment
Villager (1993)On Left Side Of Engine Compartment, Below
Coolant Reservoir
ApplicationConnector Location
Astro & Safari Van (1986-87)Under Left Corner Of Cowl
"S" & "T" Series Blazer, Bravada, Envoy, Jimmy, Pickup & Sonoma
1982-85
1.9LUnder Left Side Of Dash, Behind ECM
2.0L & 2.8LUnder Ashtray
2.5LUnder Left Side Of Dash
1986-87Under Ashtray
Van ("G" Series) (1982-87)Under Driver's Seat
ApplicationConnector Location
Integra
1991-93Behind Right Kick Panel
1994-97Behind Glove Compartment
1998-02Behind Right Side Of Center Console
Legend
1991-93Under Right Side Of Dash, Above PGM-FI
ECU/PCM
1994-95Behind Glove Compartment
NSX (1997-01)Under Glove Compartment