2013 TOYOTA SIENNA radiator

672 4-3. Do-it-yourself maintenance
SIENNA_OM_OM45472U_(U)
2GR-FE engine
Washer fluid tank (P. 687)
Engine oil filler cap ( P. 675)
Engine oil level dipstick ( P. 673)
Engine coolant reservoir ( P. 678)Brake fluid reservoir
( P. 681)
Fuse box ( P. 712)
Battery ( P. 683)
Electric cooling fans
Condenser ( P. 680)
Radiator ( P. 680)

678 4-3. Do-it-yourself maintenance
SIENNA_OM_OM45472U_(U)
Engine coolantThe coolant level is satisfactory if it is between the “FULL” and “LOW”
lines on the reservoir when the engine is cold.
Reservoir cap
“FULL”
“LOW”
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 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: -31 F [-35 C])
Canada: “Toyota Super Long Life Coolant” is a mixture of 55 % coolant and 45 % deionized water.
(Minimum temperature: -44 F [-42 C])
For more details about engine coolant, contact your Toyota dealer.
■ If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine 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.

680 4-3. Do-it-yourself maintenance
SIENNA_OM_OM45472U_(U)
Radiator and condenserCheck the radiator and condenser and clear away any foreign
objects.
If either of the above parts is extr emely dirty or you are not sure of
their condition, have your vehicle inspected by your Toyota dealer.
CAUTION
■When the engine is hot
Do not touch the radiator or condenser as they may be hot and cause seri-
ous injuries, such as burns.
■ When the electric cooling fan is operating
Do not touch the engine compartment.
Vehicles without a smart key system: With the engine switch in the “ON”
position, the electric cooling fans may automatically start to run if the air con-
ditioning is on and/or the coolant temperature is high. Be sure the engine
switch is in the “LOCK” position when working near the electric cooling fan or
radiator grille.
Vehicles with a smart key system: With the “ENGINE START STOP” switch
in IGNITION ON mode, the electric cooling fans may automatically start to
run if the air conditioning is on and/or the coolant temperature is high. Be
sure the “ENGINE START STOP” switch is OFF when working near the elec-
tric cooling fans or radiator grille.

5
When trouble arises
791
5-2. Steps to take in an emergency
SIENNA_OM_OM45472U_(U)
If your vehicle overheats
If your engine overheats:
Stop the vehicle in a safe place and turn off the air condi-
tioning system.
Check to see if steam is coming out from under the hood.
If you see steam: Stop the engine. Carefully lift the hood after the steam
subsides and then restart the engine.
If you do not see steam: Leave the engine running and carefully lift the hood.
Check to see if the cooling fans are operating.
If the fans are operating: Wait until the temperature of the engine (shown on the
instrument cluster) begins to fall and then stop the
engine.
If the fans are not operating: Stop the engine immediately and call your Toyota dealer.
After the engine has cooled
down sufficiently, check the
engine coolant level and
inspect the radiator core (radi-
ator) for any leaks.STEP1
STEP2
STEP3
STEP5STEP4

5
When trouble arises
793
5-2. Steps to take in an emergency
SIENNA_OM_OM45472U_(U)
CAUTION
■
To prevent an accident or injury when inspecting under the hood of
your vehicle
● If steam is seen coming from under the hood, do not open the hood until
the steam has subsided. The engine compartment may be very hot, caus-
ing serious injuries such as burns.
● Keep hands and clothing away from the fans and drive belt while the
engine is running.
● Do not loosen the coolant reservoir cap while the engine and radiator are
hot.
Serious injury, such as burns, may result from hot coolant and steam
released under pressure.
NOTICE
■When adding engine coolant
Wait until the engine has cooled down before adding engine coolant.
When adding coolant, do so slowly. Adding cool coolant to a hot engine too
quickly can cause damage to the engine.

866 Alphabetical index
SIENNA_OM_OM45472U_(U)
MaintenanceDo-it-yourself maintenance ....................... 663
General maintenance ............658
Maintenance data.................. 800
Maintenance requirements....655
Reset the maintenance data .....................................656
Meter
Instrument panel light control .................................245
Meters ...................................244
Mirrors Conversation mirror............... 607
Inside rear view mirror...........138
Side mirror heaters................419
Side mirrors ...........................140
Vanity mirrors ........................605
Moon roof .................................150
MP3 disc ...................................445
Multi-information display ........ 254
Noise from under vehicle .......... 24
Odometer .................................. 244
Oil Engine oil ..............................673
Opener Back door ................................82
Fuel filler door ....................... 155
Hood......................................667
Outer foot lights
Outer foot lights ..................... 580
Replacing light bulbs ............. 725
Wattage .................................812
Outside rear view mirrors Adjusting and folding ............. 140
Driving position memory........ 120
Overhead console .................... 592
Overheating, Engine ................791 Parking assist sensors............ 316
Parking brake ........................... 242
Parking lights
Replacing light bulbs ............. 725
Switch ................................... 268
Wattage................................. 812
PCS ........................................... 338
Personal lights Switch ................................... 581
Wattage................................. 812
Power back door ........................ 82
Power outlets ........................... 608
Power windows ................ 144, 148
Pre-collision system ................ 338
Quarter windows...................... 148
Radar cruise control ................ 300
Radiator .................................... 680
Radio ......................................... 426
Rear automatic air conditioning system ............. 415
Rear ceiling light
Switch ................................... 584
Wattage................................. 812
Rear manual air conditioning
system .................................... 412
Rear seat Adjustment ............................ 100
Folding third seats......... 109, 110
Installing second seats.......... 107
Removing second seats........ 104
Stowing third seats........ 111, 113
Rear seat entertainment system .................................... 502M
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