Toyota 2009 Tundra Owner's Manual page 511

4-3. Do-it-yourself maintenance
Power steering fluid
Fluid level
n
The fluid level should be within the appropriate range.
Hot: Vehicle has been driven around 50 mph (80 km/h) for 20
minutes, or slightly longer in frigid temperatures. (Fluid
temperature, 140°F - 175°F [60°C - 80°C])
Cold: Engine has not been run for about 5 hours. (Room tem-
perature, 50°F - 85°F [10°C - 30°C])
Checking the fluid level
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Make sure to check the fluid type and prepare the necessary items.
Fluid type
Items
Clean all dirt off the reservoir.
Remove the cap by turning it counterclockwise.
Wipe the dipstick clean.
Reinstall and remove the reservoir cap again.
Check the fluid level.
CAUTION
Checking the fluid level
n
Take care, as the reservoir may be hot.
488
Automatic transmission fluid DEXRON
Rag or paper towel
Full (when cold)
Add fluid (when cold)
Full (when hot)
Add fluid (when hot)
®
II or III