2017 TOYOTA SIENNA coolant temperature

5958-2. Steps to take in an emergency
SIENNA_OM_OM08007U_(U)
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When trouble arises
The coolant level is satisfactory if it is between the “FULL” and
“LOW” lines on the reservoir.
Reservoir
“FULL” line
“LOW” line
Radiator cap
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
Start the engine and turn the air conditioning system on to check
that the radiator cooling fans oper ate and to check for coolant leaks
from the radiator or hoses.
The fans operate when the air conditioning system is turned on immedi-
ately after a cold start. Confirm that the fans are operating by checking the
fan sound and air flow. If it is difficult to check these, turn the air condition-
ing system on and off repeatedly. (The fans may not operate in freezing
temperatures.)
If the fans are not operating:
Stop the engine immediately an d contact your Toyota dealer.
If the fans are operating:
Have the vehicle in spected at the nearest Toyota dealer.
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5968-2. Steps to take in an emergency
SIENNA_OM_OM08007U_(U)
WARNING
■When inspecting under the hood of your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
●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.
● Keep hands and clothing (especially a tie, a scarf or a muffler) away from
the fan and belts. Failure to do so may cause the hands or clothing to be
caught.
● Do not loosen the radiator cap or the coolant reservoir cap while the
engine and radiator are hot. High temperature steam or coolant could
spray out.
NOTICE
■When adding engine coolant
Add coolant slowly after the engine has cooled down sufficiently. Adding
cool coolant to a hot engine too quickly can cause damage to the engine.
■ To prevent damage to the cooling system
Observe the following precautions:
●Avoid contaminating the coolant with foreign matter (such as sand or dust
etc.).
● Do not use any coolant additive.

659Alphabetical index
SIENNA_OM_OM08007U_(U)
Emergency, in case ofIf a warning buzzer
sounds ................................ 545
If a warning light turns on...... 545
If a warning message is displayed ............................ 554
If the battery is discharged.... 590
If the electronic key does not operate properly ........... 588
If the engine will not start ...... 586
If you have a flat tire .... 570, 572
If you lose your keys ............. 107
If you think something is wrong.................................. 543
If your vehicle becomes stuck ................................... 597
If your vehicle has to be
stopped in an emergency ... 537
If your vehicle needs to be towed .................................. 539
If your vehicle overheats ....... 594
Engine “ACC” position ...................... 225
Accessory mode ................... 229
Compartment ........................ 486
Engine switch................ 225, 228
Hood ..................................... 483
How to start the
engine......................... 225, 228
Identification number ............ 601
If the engine will not start ...... 586
Ignition switch (engine switch) ........... 225, 228
Overheating .......................... 594 Engine coolant
Capacity................................ 604
Checking............................... 489
Preparing and checking before winter ...................... 317
Engine coolant temperature gauge ....................................... 88
Engine immobilizer system ...... 75
Engine oil
Capacity................................ 602
Checking............................... 487
Oil pressure warning light ..... 545
Oil pressure warning message............................. 561
Preparing and checking before winter ...................... 317
Engine switch .................. 225, 228
EPS (Electronic Power Steering)
Function ................................ 297
Warning light......................... 546
Warning message................. 557
Event data recorder (EDR)........ 10
*: Refer to “NAVIGATION AND MULTIMEDIA
SYSTEM OWNER’S MANUAL”