2010 TOYOTA 4RUNNER battery

5
When trouble arises
571
5-2. Steps to take in an emergency
4RUNNER_U
*: If the engine does not start when the electronic key is inside the vehi-
cle, the electronic key battery may be depleted or there may be diffi-
culties receiving the si gnal from the key. (
P. 4 1)
ContinuousContinuous
Smart key system warning
light
Indicates that the driver’s
door has been opened and
closed with the shift lever not
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 • Shift the shift
lever to P.
• Confirm the location of the
electronic
key.
Once
Sounds
for 10
seconds
(Remains on for 60
seconds) Smart key system warning
light
Indicates that the electronic
key has been taken out of
the vehicle and an attempt
was made to lock the doors
with the “ENGINE START
STOP” switch in any mode
other than off Turn the
“ENGINE
START
STOP” switch
off and lock
the doors
again.
Once
Smart key system warning
light
Indicates that an attempt was
made to drive when the elec-
tronic key was not present Confirm the
location of the
electronic
key.
Interior
buzzerExterior
buzzerWarning
lightWarning light/DetailsCorrection procedure

590
5-2. Steps to take in an emergency
4RUNNER_U
If the engine will not star t
If the engine will not start even though correct starting procedures
are being followed ( P. 164, 167), consider each of the following
points:
■ The engine will not start even though the starter motor
operates normally.
One of the following may be the cause of the problem:
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
● The engine may be flooded.
Try to restart the engine again following correct starting proce-
dures. ( P. 164, 167)
● There may be a malfunction in the engine immobilizer system.
(  P. 106)
■ The starter motor turns over slowly, the interior lights and
headlights are dim, or the horn does not sound or sounds at
a low volume.
One of the following may be the cause of the problem:
●The battery may be discharged. ( P. 598)
● The battery terminal connec tions may be loose or corroded.
■ The starter motor does not turn over.
The engine starting system may be malfunctioning due to an
electrical problem such as an open circuit or a blown fuse. How-
ever, an interim measure is available to start the engine.
(
P. 591)

5
When trouble arises
591
5-2. Steps to take in an emergency
4RUNNER_U
Emergency start function (vehicles with a 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.
Turn the “ENGINE START STOP” switch to ACCESSORY
mode.
Press and hold the “ENGINE START STOP” switch for 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 inspected 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. 598)
● There may be a malfunction in the steering lock system. (vehi-
cles with a smart key system)
Contact your Toyota dealer if the problem cannot be repaired, or if
repair procedures are unknown.
STEP 1
STEP 2
STEP 3
STEP 4

596
5-2. Steps to take in an emergency
4RUNNER_U
If the electronic key does not operate properly (vehicles with a smar t key system)
Locking and unlocking the doorsUse the mechanical key (P.
31) in order to perform the fol-
lowing operations:
Locks all doors
Unlocks all doors
Turning the key rearward
unlocks the driver’s door.
Turning the key once again
unlocks the other doors.
If communication between the electronic key and vehicle is inter-
rupted ( P. 41) or the electronic key cannot be used because the
battery is depleted, the smart key system and wireless remote con-
trol cannot be used. In such cases, the doors can be opened and the
engine can be started by following the procedure below.
CTH52AS001

5
When trouble arises
597
5-2. Steps to take in an emergency
4RUNNER_U
Changing “ENGINE START STOP”
switch modes and starting the
engine
Ensure that the shift lever is in P and depress the brake pedal. Touch the Toyota emblem side of
the electronic key to the
“ENGINE START STOP” switch.
If any of the doors is opened or
closed while the key is being
touched to the switch, an alarm
will sound to indicate that the start
function cannot detect the key.
To change “ENGINE START STOP” switch modes: Within 10
seconds of the buzzer soundin g, release the brake pedal and
press the “ENGINE START STOP” switch. Modes can be
changed each time the sw itch is pressed. (P. 168)
To start the engine: Press the “ENGINE START STOP” switch
within 10 seconds of the buz zer sounding, keeping the brake
pedal depressed.
In the event that the “ENGINE ST ART STOP” switch cannot be oper-
ated, contact your Toyota dealer.
STEP 1
CTH52AS002
STEP 2
■ Stopping the engine
Shift the shift lever to P and press the “ENGINE START STOP” switch as
you normally do when stopping the engine.
■ Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the
electronic key battery be replaced immediately when the battery is depleted.
(P. 529)
STEP 3

598
5-2. Steps to take in an emergency
4RUNNER_U
If the vehicle batter y is discharged
The following procedures may be used to start the engine if the vehi-
cle's battery is discharged.
You can also call your Toyota dealer or a qualified repair shop.
If you have a set of jumper (or booster) cables and a second vehi-
cle with a 12-volt battery, you can jump start your vehicle by follow-
ing the steps below.
2.7 L 4-cylinder (2TR-FE) engine
CTH52AS048
STEP 1

5
When trouble arises
599
5-2. Steps to take in an emergency
4RUNNER_U
4.0 L V6 (1GR-FE) engine
Connect the jumper cables accord
ing to the following procedure:
Connect a positive jumper cable clamp to the positive (+) battery
terminal on your vehicle.
Connect the clamp on the other e nd of the positive cable to the
positive (+) battery termin al on the second vehicle.
Connect a negative cable clamp to the negative (-) battery termi-
nal on the second vehicle.
Connect the clamp at the other end of the negative cable to a
solid, stationary, unpainted metallic point away from the battery
and any moving parts, as shown in the illustration.
CTH52AS044
STEP 1

600 5-2. Steps to take in an emergency
4RUNNER_U
Start the engine of the second vehicle. Increase the engine
speed slightly and maintain at that level for approximately 5
minutes to recharge the battery of your vehicle.
Vehicles with a smart key system only: Open and close any
of the doors of your vehicle with the “ENGINE START
STOP” switch off.
Maintain the engine speed of the second vehicle and start
the engine of your vehicle by turning the “ENGINE START
STOP” switch to IGNITION ON mode (vehicles with a smart
key system) or turning the engine switch to the “ON” posi-
tion (vehicles without a smart key system).
Once the vehicle’s engine has started, remove the jumper
cables in the exact reverse or der from which they were con-
nected.
Once the engine starts, have the vehicle inspected at your Toyota
dealer as soon as possible.STEP 2
STEP 3
STEP 4
STEP 5