battery Lexus ES350 2012 Service Manual

When trouble arises5
429
ES350_U
5-1. Essential informationEmergency flashers.............. 430
If your vehicle needs to be towed ....................................... 431
If you think something is wrong ...................................... 437
Fuel pump shut off system .................................... 438 5-2. Steps to take in an
emergency
If a warning light turns on or a warning buzzer
sounds... ................................. 439
If a warning message is displayed................................ 449
If you have a flat tire................. 461
If the engine will not start .... 470
If the shift lever cannot be shifted from P ....................... 472
If you lose your keys .............. 473
If the electronic key does not operate properly........... 474
If the vehicle battery is discharged ............................. 477
If your vehicle overheats ..... 480
If the vehicle becomes stuck........................................ 483
If your vehicle has to be stopped in an
emergency ............................ 484

430
ES350_U
5-1. Essential information
Emergency flashers
NOTICE
■To prevent battery discharge
Do not leave the emergency flashers on longer than necessary when the engine is
not running.
Use the emergency flashers if the vehicle malfunctions or is involved in an
accident.
Without navigation systemPress the switch to flash all the
turn signal lights. To turn them
off, press the switch once again.
With navigation system Press the switch to flash all the
turn signal lights. To turn them
off, press the switch once again.

5
When trouble arises
459
5-2. Steps to take in an emergency
ES350_U
InteriorbuzzerExterior buzzerWa r n i n g m e s s a g eDetailsCorrection
procedure
Once3 times
(Flashing)
Indicates that the
driver’s door has
been opened or
closed with the
shift lever in P, the
“ENGINE START
STOP” switch in
any mode other
than OFF and the
electronic key
outside of the
detection area.
Tu r n t h e
“ENGINE START
STOP” switch
OFF or confirm
the location of the
electronic key.
Con-
tinuousCon-
tinuous
(Displayed alternately)
(Flashing)
Indicates that the
driver’s door has
been opened or
closed with the
shift lever out of P,
the “ENGINE
START STOP”
switch in any
mode other than
OFF and the elec-
tronic key outside
of the detection
area.
• Shift the shift lever to P.
•Confirm the
location of the
electronic key.
Once
(Flashing)
Indicates that the
key battery is low.Replace the bat-
tery. ( →P. 4 0 7 )

460
5-2. Steps to take in an emergency
ES350_U*: If the engine does not start when the electronic key is inside the vehicle,
the electronic key battery may be de pleted or there may be difficulties
receiving the signal from the key. ( →P. 32)
Interior
buzzerExterior buzzerWarning messageDetailsCorrection
procedure
Once
Indicates that a
door has been
opened or closed
and the “ENGINE
START STOP”
switch has been
switched twice to
ACCESSORY
mode from OFF.
Press the
“ENGINE START
STOP” switch
while applying the
brakes.

(Comes on for 15 seconds.)
(Flashing)
Indicates that the
steering lock has
not released.
Press the
“ENGINE START
STOP” switch
again while turn-
ing the steering
wheel with the
brake pedal
depressed.
OnceIndicates that the
electronic key
does not operate
properly.
→ P. 4 7 5


470
5-2. Steps to take in an emergency
ES350_U
If the engine will not start
If the engine will not start even though correct starting procedures are
being followed (
→P. 128), consider each of the following points.
■The engine will not start even when 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.
Add fuel to the vehicle.
● The engine may be flooded.
Try to restart the engine once more following correct starting
procedures. ( →P. 1 2 8 )
● There may be a malfunction in the engine immobilizer system.
(→ P. 8 1 )
■ The starter motor turns over slowly, the interior lights and head-
lights are dim, or the horn does not sound or sounds at a low vol-
ume.
One of the following may be the cause of the problem.
● The battery may be discharged. ( →P. 4 7 7 )
● The battery terminal connections may be loose or corroded.
■ The starter motor does not turn over
One of the following may be the cause of the problem.
● The engine starting system may be malfunctioning due to an elec-
trical problem such as an open circuit or a blown fuse. However,
an interim measure is available to start the engine. ( →P. 4 7 1 )

5
When trouble arises
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5-2. Steps to take in an emergency
ES350_U
Emergency start functionWhen 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 STOP” switch to the ACCESSORY
mode.
Push and hold the “ENGINE START STOP” switch about 15 sec-
onds while depressing the brake pedal firmly.
Even if the engine can be started using the above steps, the system may
be malfunctioning. Have the vehicle checked by your Lexus dealer.
■ The starter motor does not turn ov er, the interior lights and head-
lights 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. 4 7 7 )
● There may be a malfunction in the steering lock system.
Contact your Lexus dealer if the problem cannot be repaired, or if
repair procedures are unknown.
STEP1
STEP2
STEP3
STEP4

474
5-2. Steps to take in an emergency
ES350_U
If the electronic key does not operate properly
Locking and unlocking the doors and key linked functions
Use the mechanical key built in to the electronic keys to operate the
doors. (→ P. 2 6 )
Remove the cover on the driver’s
door handle.
Locks all doors
Closes the windows/standard
moon roof (turn and hold)
Unlocks the door
Tu r n i n g t h e k e y r e a r w a r d u n l o c k s
the driver's door. Turning the key
once again unlocks the other
doors.
Opens the windows/standard
moon roof (turn and hold)
If communication between the electronic key and vehicle is interrupted
(→ P. 32) or the electronic key cann ot be used because the battery is
depleted, smart access system with push-button start and wireless remote
control cannot be used. In such cases, the doors can be opened or the
engine can be started by following the procedure below.
STEP1
STEP2

476
5-2. Steps to take in an emergency
ES350_UTo change “ENGINE START ST
OP” switch modes: Within 10
seconds of the buzzer sounding, release the brake pedal and
press the “ENGINE START STOP” switch. Modes can be
changed each time the switch is pressed. ( →P. 1 2 8 )
To start the engine: Press the “ENGINE START STOP” switch
within 10 seconds after the buzzer sounds, keeping the brake
pedal depressed.
In the event that the “ENGINE START STOP” switch still cannot be oper-
ated, contact your Lexus dealer.
■Stopping the engine
Shift the shift lever to P and press the “ENGINE START STOP” switch as you nor-
mally do when stopping the engine.
■Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the elec-
tronic key battery be replaced immediately when the battery depletes. ( →P. 4 0 7 )
STEP3

5
When trouble arises
477
5-2. Steps to take in an emergency
ES350_U
If the vehicle battery is discharged
The following procedures may be used to start the engine if the vehicle’s
battery is discharged.
You can call your Lexus dealer or qualified repair shop.
If you have a set of jumper (or booster) cables and a second vehicle
with a 12-volt battery, you can jump start your Lexus following the steps
below.
Remove the cover.
Connecting the jumper cables. Positive (+) battery terminal on your vehicle
Positive (+) battery terminal on the second vehicle
Negative (-) battery terminal on the second vehicle
Connect the jumper cable to ground on your vehicle as shown in the
illustration.
STEP1
STEP2

478
5-2. Steps to take in an emergency
ES350_U
■Starting the engine when the battery is discharged
The engine cannot be started by push-starting.
■Avoiding a discharged battery
●Turn off the headlights and the audio system while the engine is turned off.
●Turn off any unnecessary electrical components when the vehicle is running at a
low speed for an extended period, such as in heavy traffic, etc.
■Charging the battery
The electricity stored in the battery will discharge gradually even when the vehi-
cle is not in use, due to natural discharge and the draining effects of certain
electrical appliances. If the vehicle is left for a long time, the battery may dis-
charge, and the engine may be unable to start. (The battery recharges automat-
ically during driving.)
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.
Open and close any of the doors with the “ENGINE START
STOP” switch OFF.
Maintain the engine speed of the second vehicle and turn the
“ENGINE START STOP” switch to the 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 Lexus dealer
as soon as possible.STEP3
STEP4
STEP5
STEP6