Specifications: Other Lexus LS III

ES300, GS300, GS430, IS300 & LX470

1. Ensure engine is cool. Remove radiator cap. Remove 3 drain plugs on engine and radiator, then drain coolant. Close drain plugs.
2. Slowly add coolant until system is full. Install radiator cap. Start engine, and open heater water valve. Maintain engine speed at 2000-2500 RPM, and warm engine. Stop engine, and allow engine to cool. Check system for leaks.

LS430

1. Remove "V" bank cover. Remove radiator cap from radiator reservoir. Remove water fill plug from throttle body. Remove 3 drain plugs on engine and radiator, then drain coolant. Close drain plugs, and tighten to 9 ft. lbs. (12 N.m).
2. Slowly add coolant mixture to throttle body until system is full. Install fill plug, and tighten to 33 ft. lbs. (45 N.m). Slowly add more coolant mixture into radiator reservoir until system is full. Install radiator cap.
3. Start engine and allow to idle. Increase engine speed to 2000-2500 RPM. Recheck coolant level at coolant reservoir tank, and add as necessary. Check system for leaks.

RX 300

1. Remove engine undercover. Remove radiator cap. Loosen radiator and engine drain plugs. Drain coolant. Close drain plugs. On 2WD models, tighten right engine drain plug to 62 INCH lbs. (7.0 N.m). On 4WD models, tighten right and left engine drain plugs to 10 ft. lbs (13 N.m).
2. Slowly add coolant until system is full. Use only ethylene-glycol engine coolant, and mix accordingly. Install radiator cap. Start engine and bleed air from cooling system.
3. If necessary, refill coolant into reservoir up to FULL line. Check engine coolant for leaks. Reinstall engine undercover.