2002 Lexus GS 430 Owners Manual - Page 285

CHASSIS CHECKING POWER STEERING FLUID (GS430) 63G006-1 63G003-1 " 1 If hot O.K. 2 If hot add 4 If cold add Check the fluid level through the reservoir. If necessary, add automatic transmission fluid DEXRONRII or III. If the vehicle has been driven around 80 km/h (50 mph) for 20 minutes (a little more in frigid temperatures), the fluid is hot (60_C - 80_C or 140_F - 175_F). You may also check the level when the fluid is cold (about room temperature, 10_C - 30_C or 50_F - 85_F) if the engine has not been run for about five hours. 3 If cold O.K. Clean all dirt off the reservoir and look at the fluid level. If the fluid is cold, the level should be in the "COLD" range. Similarly, if it is hot, the fluid level should be in the "HOT" range. If the level is at the low side of the appropriate range, add automatic transmission fluid DEXRONRII or III to bring the level within the range. To remove the reservoir cap, turn it counterclockwise and lift up. To reinstall it, turn it clockwise. After replacing the reservoir cap, visually check the steering box case, vane pump and hose connections for leaks or damage. CAUTION The reservoir may be hot so be careful not to burn yourself. 268