The coolant level is satisfactory if it is between the "FULL" and "LOW" lines on the reservoir when the engine is cold.

If the level is on or below the "LOW" line, add coolant up to the "FULL" line.
■Coolant selection
Only use "Toyota Super Long Life Coolant" or a similar high quality ethylene glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant with long-life hybrid organic acid technology.
U.S.A.:
"Toyota Super Long Life Coolant" is a mixture of 50% coolant and 50% deionized water. (Minimum temperature: -31ºF [-35ºC] )
Canada:
"Toyota Super Long Life Coolant" is a mixture of 55% coolant and 45% deionized water. (Minimum temperature: -44ºF [-42ºC] ) For more details about coolant, contact your Toyota dealer.
■If the coolant level drops within a short time of replenishing
Visually check the radiators, hoses, engine/power control unit coolant reservoir caps, drain cock and water pump.
If you cannot find a leak, have your Toyota dealer, test the cap and check for leaks in the cooling system.
WARNING
■When the engine is hot
Do not remove the engine coolant reservoir cap.
The cooling system may be under pressure and may spray hot coolant if the cap is removed, causing serious injuries, such as burns.
NOTICE
■When adding coolant
Coolant is neither plain water nor straight antifreeze. The correct mixture of water and antifreeze must be used to provide proper lubrication, corrosion protection and cooling. Be sure to read the antifreeze or coolant label.
■If you spill coolant
Be sure to wash it off with water to prevent it from damaging parts or paint.
Checking the radiator and condenser
Check the radiator and condenser, and clear away any foreign objects.
If either of the above parts is extremely dirty or you are not sure of their condition, have your vehicle inspected by your Toyota dealer.
WARNING
■When the engine is hot
Do not touch the radiator or condenser as they may be hot and cause serious injuries, such as burns.
■When the electric cooling fan is operating
Do not touch the engine compartment.
With the engine switch in ON, the electric cooling fan may automatically start to run if the air conditioning is on and/or the coolant temperature is high. Be sure the engine switch is off when working near the electric cooling fan or radiator grille.
Adding engine oil
Checking and adding the
brake fluidTerminals of ecu
Check combination meter assembly
Measure the voltage and resistance of the
connector.
Check instrument panel junction block (main body ecu)
Measure the voltage and resistance of the
connectors.
...
General maintenance
Listed below are the general maintenance items that should be
performed at the intervals specified in the “owner’s warranty
information booklet” or “owner’s manual supplement/scheduled
maintenance guide”. It is recommended that any problem
you notice should be brought to the attentio ...
Refueling
Opening the fuel tank cap
Perform the following steps
to open the fuel tank cap:
Before refueling the vehicle
Close all the doors and windows,
and turn the engine
switch to OFF.
Confirm the type of fuel.
■Fuel tank opening for unleaded
gasoline
To help prevent incorrect fueling,
your vehicle ...