2012 TOYOTA 4RUNNER check engine light

192 2-2. Instrument cluster
4RUNNER_U
■The meters and display illuminate when (Optitron type meter)
Vehicles without a smart key system:
The engine switch is in the “ON” position.
Vehicles with a smart key system:
The “ENGINE START STOP” switch is in IGNITION ON mode.
■ Eco Driving Indicator Light will not operate in the following conditions
● The shift lever is anything other than D.
● The vehicle speed is approximately 80 mph (130 km/h) or higher.
■ When the average fuel consumption is reset
The average fuel consumption displayed on the accessory meter and “Past
Record” screen of the Display Audio system (if equipped) or the navigation
system (if equipped) will be reset at the same time.
■ The brightness of the instrument panel lights (Optitron type meter)
When the headlight switch is turned to on, the brightness will be reduced
slightly unless the control dial is turned fully upward.
NOTICE
■ To prevent damage to the engine and its components
● Do not let the indicator needle of the tachometer enter the red zone, which
indicates the maximum engine speed.
● The engine may be overheating if the engine coolant temperature gauge is
in the red zone (H). In this case, immediately stop the vehicle in a safe
place, and check the engine after it has cooled completely. ( P. 627)
■ While driving (Optitron type meter)
When the voltmeter indicates more than 19 V or less than 9 V, the battery
may be malfunctioning. Have your vehicle checked at your Toyota dealer.

196 2-2. Instrument cluster
4RUNNER_U
*1: These lights turn on when the “ENGINE START STOP” switch isturned to IGNITION ON mode (vehicles with a smart key system) or
the engine switch is turned to the “ON” position (vehicles without a
smart key system) to indicate that a system check is being per-
formed. They will turn off after the engine is started, or after a few
seconds. There may be a malfunction in a system if a light does not
come on, or if the lights do not turn off. Have the vehicle inspected
by your Toyota dealer.
*2: The light flashes to indicate that the system is operating.
(if equipped)
Crawl Control indicator
(P. 254) Security indicator
(P. 11 3 , 11 6 )
Eco Driving Indicator
Light ( P. 189)
(if equipped)
Intuitive parking assist
indicator ( P. 221)
SRS airbag on-off indi-
cator (P. 136)
(if equipped)
Automatic running
boards indicator
(P. 59)
*1
*1
*1*1, 2

197
2-2. Instrument cluster
2
When driving
4RUNNER_U
■
Warning lights
Warning lights inform the driver of malfunctions in any of the
vehicle’s systems. ( P. 587)
*1: These lights turn on when the “ENGINE START STOP” switch is
turned to IGNITION ON mode (vehicles with a smart key system) or
the engine switch is turned to the “ON” position (vehicles without a
smart key system) to indicate that a system check is being per-
formed. They will turn off after the engine is started, or after a few
seconds. There may be a malfunction in a system if a light does not
come on, or if the lights do not turn off. Have the vehicle inspected
by your Toyota dealer.
*2: The light flashes to indicate a malfunction.
*3: The light flashes rapidly to indicate a malfunction.
*4: The light flashes continuously to indicate a malfunction.
(U.S.A.)(Canada)(U.S.A.)(Canada)(U.S.A.)
(Canada)(if equipped)(if equipped)(if equipped)(if equipped)(if equipped)
(U.S.A.)(Canada)(if equipped)
(if equipped)(if equipped)(if equipped)
*1*1*1*1*1*1*1*1
*1*2*1*3*3*3*3*4
*1*1*1
*1*1*1*1, 2

213
2-3. Operating the lights and wipers
2
When driving
4RUNNER_U
■
The windshield wipers and washer can be operated when
Vehicles without a smart key system: The engine switch is in the “ON” posi-
tion.
Vehicles with a smart key system: The “ENGINE START STOP” switch is in
IGNITION ON mode.
■ If no windshield washer fluid sprays
Check that the washer nozzles are not blocked if there is washer fluid in the
windshield washer fluid reservoir.
NOTICE
■When the windshield is dry
Do not use the wipers, as they may damage the windshield.
■ When the washer fluid tank is empty
Do not operate the switch continually as the washer fluid pump may over-
heat.
■ When a nozzle becomes blocked
Do not try to clear it with a pin or other object. The nozzle will be damaged.
Washer/wiper dual opera-
tion
The wipers will automatically
operate a couple of times after
the washer squirts.
CTH23AS029

216 2-3. Operating the lights and wipers
4RUNNER_U
■When the rear window wiper and washer switch is turned off
The rear wiper will stop operation, and return to the retracted position after
approximately 3 seconds.
However, if the engine switch is turned to the “ACC” or “LOCK” position
(vehicles without a smart key system) or the “ENGINE START STOP” switch
is turned to ACCESSORY mode or tur ned off (vehicles with a smart key sys-
tem) while the rear wiper is operating, the rear wiper will stop at that position
and will not return to the retracted position.
■ If no washer fluid sprays
Check that the washer nozzle is not blocked if there is washer fluid in the
washer fluid reservoir.
■ Customization that can be co nfigured at Toyota dealer
Settings (e.g. drip prevention function) can be changed.
(Customizable features P. 660)
NOTICE
■When the rear window is dry
Do not use the wiper, as it may damage the rear window.
■ When the washer fluid tank is empty
Do not operate the switch continually as the washer fluid pump may over-
heat.
■ When a nozzle becomes blocked
Do not try to clear it with a pin or other object. The nozzle will be damaged.

Maintenance and care4
501
4RUNNER_U
4-1. Maintenance and careCleaning and protecting the vehicle exterior ......... 502
Cleaning and protecting the vehicle interior .......... 505
4-2. Maintenance Maintenance requirements .................. 508
General maintenance....... 511
Emission inspection and maintenance (I/M)
programs ........................ 515
4-3. Do-it-yourself maintenance
Do-it-yourself service precautions .................... 516
Hood ................................ 519
Engine compartment ........ 520
Tires ................................. 537
Tire inflation pressure ...... 543
Wheels ............................. 547
Air conditioning filter......... 550
Wireless remote control/ electronic key battery
....... 552
Checking and replacing fuses .............................. 555
Light bulbs........................ 565

565
4-3. Do-it-yourself maintenance
4
Maintenance and care
4RUNNER_U
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.
■ Preparing for light bulb replacement
Check the wattage of the light bulb to be replaced. ( P. 644)
■ Removing the engine compartment cover
P. 521
■ Front bulb locations
CTH43AS140
Parking light
and front side
marker light
Fog light Headlight high beam Headlight low beam
Front turn signal light and
daytime running light

5
When trouble arises
595
5-2. Steps to take in an emergency
4RUNNER_U
Follow the correction procedures. (vehicles with a smart key system)
After taking the specified steps to correct the suspected problem,
check that the warning light goes off.
Interior
buzzerExterior
buzzerWarning
lightWarning light/DetailsCorrection procedure
Once Smart key system warning
light
Indicates that the electronic
key is not present when the
“ENGINE START STOP”
switch is pressed Confirm the
location of the
electronic
key*.
Once3 times
Smart key system warning
light
Indicates that a door other
than the driver’s door has
been opened and closed with
the “ENGINE START STOP”
switch in any mode other
than off and the electronic
key has been taken out of
the detection area Confirm the
location of the
electronic
key.
Once3 times
Smart key system warning
light
Indicates that the driver’s
door has been opened and
closed with the shift lever in
P, the “ENGINE START
STOP” switch in any mode
other than off and the elec-
tronic key has been taken out
of the detection area Turn the
“ENGINE
START
STOP” switch
off or confirm
the location of
the electronic
key.