2023 TOYOTA 4RUNNER check engine

2024-2. Driving procedures
4RUNNER (U)■
If the engine does not start
●The engine immobilizer system may not have been deactivated. ( P. 78)
Contact your Toyota dealer.
● Check that the shift lever is securely set in P. The engine may not start if the
shift lever is displaced out of P.
■ When a message requesting the smart key system be inspected is dis-
played on the multi-information display
The system may be malfunctioning. Have the vehicle inspected by your
Toyota dealer immediately.
■ If the electronic key battery is depleted
P. 447
■ Operation of the engine switch
If the switch is not pressed shortly and firmly, the engine swi tch mode may
not change or the engine may not start.

2044-2. Driving procedures
4RUNNER (U)
NOTICE
■To prevent battery discharge
● Do not leave the engine switch in ACCESSORY or IGNITION ON mode
for long periods of time without the engine running.
● If “ACCESSORY” or “IGNITION ON” is displayed on the multi-infor mation
display, the engine switch is not off. Exit the vehicle after t urning the
engine switch off.
● Do not stop the engine when the shift lever is in a position ot her than P. If
the engine is stopped in another shift lever position, the engine switch will
not be turned off but instead be turned to ACCESSORY mode. If t he vehi-
cle is left in ACCESSORY mode, battery discharge may occur.
■ When starting the engine
● Do not race a cold engine.
● If the engine becomes difficult to start or stalls frequently, have your vehi-
cle checked by your Toyota dealer immediately.
■ Symptoms indicating a malf unction with the engine switch
If the engine switch seems to be operating somewhat differently than usual,
such as the switch sticking slightly, there may be a malfunction. Contact
your Toyota dealer immediately.

2084-2. Driving procedures
4RUNNER (U)■
If the shift lever cannot be shifted from P
First, check whether the brake pedal is being depressed.
If the shift lever cannot be shifted with your foot on the brak e pedal, there may
be a problem with the shift lock system. Have the vehicle inspected by your
Toyota dealer immediately.
The following steps may be used as an emergency measure to ensu re that
the shift lever can be shifted.
Releasing the shift lock:
Set the parking brake.
Turn the engine switch is off.
Depress the brake pedal.
■ If the “S” indicator does not come on even after shifting the s hift lever to
S
This may indicate a malfunction in the automatic transmission s ystem. Have
the vehicle inspected by your Toyota dealer immediately.
(In this situation, the transmission will operate in the same m anner as when
the shift lever is in D.)
■ Downshift restriction warning buzzer (S mode)
To help ensure safety and driving performance, downshifting ope ration may
sometimes be restricted. In some circumstances, downshifting ma y not be
possible even when the shift lever is operated. (A buzzer will sound twice.)
Pry the cover up with a flathead screw-
driver or equivalent tool.
To prevent damage to the cover, cover
the tip of the screwdriver with a rag.
Press the shift lock override button.
The shift lever can be shifted while the
button is pressed.
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2104-2. Driving procedures
4RUNNER (U)
The lever will return to its original position after operation.
Right turn
Lane change to the right (push
and hold the lever partway)
The right hand signals will flash
until you release the lever.
Lane change to the left (push
and hold the lever partway)
The left hand signals will flash until
you release the lever.
Left turn
■ Turn signals can be operated when
The engine switch is in IGNITION ON mode.
■ If the indicator flashes faster than usual
Check that a light bulb in the front or rear turn signal lights has not burned
out.
Turn signal lever
Operating instructions
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2254-3. Operating the lights and wipers
4
Driving
4RUNNER (U)
■The windshield wiper and washer can be operated when
The engine switch is in IGNITION ON mode.
■ If no windshield washer fluid sprays
Check that the washer nozzles are not blocked if there is washe r fluid in the
washer fluid reservoir.
WARNING
■ Caution regarding the use of washer fluid
When it is cold, do not use the washer fluid until the windshie ld becomes
warm. The fluid may freeze on the windshield and cause low visi bility. This
may lead to an accident, resulting in death or serious injury.
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
In this case, contact your Toyota dealer.
Do not try to clear it with a pin or other object. The nozzle will be damaged.

2274-3. Operating the lights and wipers
4
Driving
4RUNNER (U)
Ty p e B
Off
Intermittent window
wiper operation
Normal window wiper
operation
Washer/wiper dual oper-
ation
Washer/wiper dual oper-
ation
The wiper will automatically
operate a couple of times after
the washer squirts.
(After operating several times,
the wiper operates one more
time after a short delay to pre-
vent dripping.)
■The rear window wiper and washer can be operated when
●The engine switch is in IGNITION ON mode.
● The back window is completely closed.
■ Intermittent window wiper operation
●When intermittent window wiper operation mode is selected, the wiper will
operate a couple of times and then switch to intermittent opera tion.
● During intermittent operation, the wiper stops temporarily at the reversing
position.
■ 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 engine switch is turned to
ACCESSORY mode or turned off 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
Settings (e.g. drip prevention function) can be changed.
(Customizable features P. 549)
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2864-5. Using the driving support systems
4RUNNER (U)
Multi-information display
Turning the RCTA function on/off.
Outside rear view mirror indica-
tors
When a vehicle approaching from
the right or left at the rear of the
vehicle is detected, both outside
rear view mirror indicators will
flash.
Navigation system screen
If a vehicle approaching from the
right or left at the rear of the vehicle
is detected, the RCTA icon ( P.
288) for the detected side will be
displayed.
RCTA buzzer
If a vehicle approaching from the right or left at the rear of the vehicle is
detected, a buzzer will sound.
The RCTA function can be enabl ed/disabled on screen of the
multi-information display. ( P. 9 5 )
When the RCTA function is disabled, the “RCTA OFF” indicator wi ll come
on. Each time the engine switch is turned off then changed to t he IGNI-
TION ON mode, the RCTA function will be enabled automatically.
RCTA (Rear Cross Traffic Alert)
The RCTA function uses the BSM radar sensors installed on the
inner side of the rear bumper. This function is intended to ass ist
the driver in checking areas that are not easily visible when
backing up.
System components
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Turning the RCTA function on/off
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3114-5. Using the driving support systems
4
Driving
4RUNNER (U)■
Sounds and vibrations caused b y the downhill assist control system
● A sound may be heard from the engine compartment when the engine is
started or just after the vehicle begins to move. This sound do es not indicate
that a malfunction has occurred in downhill assist control syst em.
● Either of the following conditions may occur when the downhill assist control
system is operating. None of these are indicators that a malfunction has
occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard after the vehicle comes to a stop.
■ System malfunction
In the following cases, have your vehicle checked by your Toyota dealer.
●The downhill assist control system indicator does not come on w hen the
engine switch is turned to IGNITION ON mode.
● The downhill assist control system indicator does not come on w hen the
“DAC” switch is pressed.
● The slip indicator comes on.
WARNING
■When using downhill assist control system
Do not rely overmuch on the downhill assist control system. Thi s function
does not extend the vehicle’s performance limitations. Always t horoughly
check the road conditions, and drive safely.
■ The system may not operate on the following surfaces, which may lead
to an accident causing death or serious injury
● Slippery surfaces such as wet or muddy roads
● Icy surface
● Unpaved roads