2010 TOYOTA HIGHLANDER check engine

486
4-3. Do-it-yourself maintenance
Light bulbs
You may replace the following bulbs yourself. The difficulty level of
replacement varies depending on the bulb. If necessary bulb
replacement seems difficult to perfor m, contact your Toyota dealer.
For more information about replacing other light bulbs, contact your
Toyota dealer.
■ Prepare a replacement light bulb.
Check the wattage of the light bulb being replaced. ( P. 566)
■ Remove the engine compartment cover.
 P. 439
■ Turn the power back door main switch OFF. (vehicles with
power back door)
 P. 7 3
■ Front bulb locations
Headlights
Parking and front side marker lights
Front fog lights (if equipped)
Front turn signal lights

514 5-2. Steps to take in an emergency
Low washer fluid warning
light (vehicles without
multi-information display)Low level of washer fluid Fill the tank.
(U.S.A.) Engine oil replacement
reminder light (vehicles
without multi-information
display)
Illuminates for about 3 sec-
onds and then flashes for
about 12 seconds: Indicates
that the engine oil is sched-
uled to be changed.
Check and change the
engine oil if necessary.
Comes on and remains:
Indicates that the engine oil
should be changed. Check and change the
engine oil.
Tire pressure warning
light
When the light comes on:
Low tire inflation pressure
Adjust the tire inflation
pressure.
When the light comes on
after blinking for 1 minute:
Malfunction in the tire
pressure warning system Have the system checked
by your Toyota dealer.
Master warning light
(vehicles with multi-infor-
mation display)
A buzzer sounds and the
warning light comes on
and flashes to indicate that
the master warning system
has detected a malfunc-
tion. P. 5 2 1
Warning lightWarning light/DetailsCorrection procedure

518 5-2. Steps to take in an emergency
■If the tire pressure warning light comes on after blinking for 1
minute frequently Vehicles without smart key system
If the tire pressure warning light comes on after blinking for 1 minute fre-
quently when the engine switch is turned to the “ON” position, have it
checked by your Toyota dealer. Vehicles with smart key system
If the tire pressure warning light comes on after blinking for 1 minute fre-
quently when the “ENGINE START STOP” switch is turned to IGNITION
ON mode, have it checked by your Toyota dealer.

5
When trouble arises
531
5-2. Steps to take in an emergency
CAUTION
■Using the tire jack
Improper use of the tire jack may lead to death or serious injuries due to
the vehicle suddenly falling off the jack.
●Do not use the tire jack for any pu
rpose other than replacing tires or
installing and removing tire chains.
●Only use the tire jack that comes wi th this vehicle for replacing a flat
tire.
Do not use it on other vehicles, and do not use other tire jacks for
replacing tires on this vehicle.
●Always check that the tire jack is securely set to the jack point.
●Do not put any part of your body under the vehicle supported by a jack.
●Do not start or run the engine while your vehicle is supported by the
jack.
●Do not raise the vehicle while someone is in it.
●When raising the vehicle, do not put an object on or under the jack.
●Do not raise the vehicle to a hei ght greater than that required to
replace the tire.
●Use a jack stand if it is necessary to get under the vehicle.
Take particular care when lowering the vehicle to ensure that no one
working on or near the vehicle will be injured.

536 5-2. Steps to take in an emergency
Emergency start function (vehicles with smart key system)When the engine does not start, the following steps can be used as
an interim measure to start the engine if the “ENGINE START STOP”
switch is functioning normally. Set the parking brake.
Shift the shift lever to P.
Set the “ENGINE START ST OP” switch to ACCESSORY
mode.
Push and hold the “ENGINE START STOP” switch about 15
seconds while depressing the brake pedal firmly.
Even if the engine can be start ed using the above steps, the system
may be malfunctioning. Have the vehicle checked by your Toyota
dealer.
■ The starter motor does not turn over, the interior lights and
headlights do not turn on, or the horn does not sound.
One of the following may be the cause of the problem.
● One or both of the battery terminals may be disconnected.
● The battery may be discharged. ( P. 541)
● There may be a malfunction in the steering lock system (vehi-
cles with smart key system).
Contact your Toyota dealer if the problem cannot be repaired, or if
repair procedures are unknown.
STEP1
STEP2
STEP3
STEP4

5
When trouble arises
543
5-2. Steps to take in an emergency
■
Starting the engine when the battery is discharged
The engine cannot be started by push-starting.
■ To prevent battery discharge
●Turn off the headlights and the audio system while the engine is turned
off.
● Turn off any unnecessary electrical components when the vehicle is run-
ning at a low speed for an extended period, such as in heavy traffic, etc.
■ When the battery is removed or discharge
●The power back door must be initialized ( P. 75)
● The tire inflation pressure warning system must be initialized. ( P. 455)
Vehicles without smart key system:
Maintain the engine speed of the second vehicle, and turn
the engine switch to the “ON” position, then start the vehi-
cle's engine.
Vehicles with smart key system:
Maintain the engine speed of the second vehicle, and turn
the “ENGINE START STOP” switch to IGNITION ON mode,
then start the vehicle's engine.
Once the vehicle’s engine has started, remove the jumper
cables in the exact reverse order in which they were con-
nected.
Once the engine starts, have the vehicle checked at your Toyota
dealer as soon as possible.STEP4
STEP5

5
When trouble arises
545
5-2. Steps to take in an emergency
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.
Remove the engine compartment cover. (
P. 439)
Check to see if the cooling fan is operating.
If the fan is operating: Wait until the temperature of the engine (shown on the
instrument cluster) begins to fall and then stop the
engine.
If the fan is not operating: Stop the engine 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.
Engine coolant reservoir
Radiator
STEP1
STEP2
STEP3
STEP4
STEP5

559
6-1. Specifications
6
Vehicle specifications
Ignition system
Electrical system
Spark plug
Make
Gap
2.7 L 4-cylinder (1AR-FE) engine
DENSO, SK16HR11
3.5 L V6 (2GR-FE) engine
DENSO FK20HR11
0.043 in. (1.1 mm)
NOTICE
■ Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust gap when tuning engine.
Battery
Open voltage* at
68 F (20 C): 12.6  12.8 V Fully charged
12.2  12.4 V Half charged
11 . 8
 12.0 V Discharged
(*: Voltage is checked 20 minutes
after the engine and all the lights are
turned off)
Charging rates 5 A max.