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Emergency start function
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:
Vehicles with an automatic transmission
Set the parking brake.
Put the shift lever in P.
Set 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.
Vehicles with a manual transmission
Set the parking brake.
Put the shift lever in N.
Set the “ENGINE START STOP” switch to the ACCES-
SORY mode.
Push and hold the “ENGINE START STOP” switch for
about 15 seconds while depressing the brake pedal and
clutch pedal firmly.
Even if the engine can be started using the above steps, the system
may be malfunctioning. Have the vehicle checked by any autho-
rized Lexus dealer or repairer, or another duly qualified and
equipped professional.
STEP1
STEP2
STEP3
STEP4
STEP1
STEP2
STEP3
STEP4
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5-2. Steps to take in an emergency
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If the shift lever cannot be shifted from P
: If equipped
If the shift lever cannot be shifted with your foot on the brake, there
may be a problem with the shift lock system (a system to prevent acci-
dental operation of the shift lever). Have the vehicle inspected by any
authorized Lexus dealer or repairer, or another duly qualified and
equipped professional, immediately.
The following steps may be used as an emergency measure to ensure
that the shift lever can be shifted.
Set the parking brake.
Start the engine.
Depress the brake pedal.
Press the shift lock override
button.
The shift lever can be shifted
while the button is pressed.
STEP1
STEP2
STEP3
STEP4
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5-2. Steps to take in an emergency
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If the electronic key does not operate properly
Locking and unlocking the doors, unlocking the trunk and key linked func-
tions
Use the mechanical key built in to the electronic keys to operate
the doors. (P. 33)
An alarm will sound if the alarm is set. ( P. 102)
Doors
Remove the cover on the
driver’s door handle.
Locks all doors
Closes the windows/moon
roof (turn and hold)
Unlocks all doors
Opens the windows/moon
roof (turn and hold)
If communication between the electronic key and vehicle is inter-
rupted (P. 42) or the electronic key cannot be used because the bat-
tery is depleted, the smart entry & start system and wireless remote
control cannot be used. In such cases, the doors and trunk can be
opened or the engine can be started by following the procedure below.
STEP1
STEP2
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5-2. Steps to take in an emergency
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Changing “ENGINE START STOP” switch modes and starting the
engine
Automatic transmission
Shift the shift lever to P and apply the brakes.
Touch the Lexus emblem side
of the electronic key to the
“ENGINE START STOP”
switch.
An alarm will sound to indicate
that the start function cannot
detect the electronic key that is
touched to the “ENGINE
START STOP” switch if any of
the doors is opened and closed
while the key is touched to the
switch.
To change “ENGINE START STOP” 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. 158)
To start the engine: Press the “ENGINE START STOP”
switch within 10 seconds after the buzzer sounds, keeping
the brake pedal depressed.
STEP1
STEP2
STEP3
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5-2. Steps to take in an emergency
IS250/220d/200d_EEManual transmission
Shift the shift lever to N and depress the clutch pedal.
Touch the Lexus emblem side
of the electronic key to the
“ENGINE START STOP”
switch.
An alarm will sound to indicate
that the start function cannot
detect the electronic key that is
touched to the “ENGINE
START STOP” switch if any of
the doors is opened and closed
while the key is touched to the
switch.
To change “ENGINE START STOP” switch modes: Within
10 seconds of the buzzer sounding, release the clutch pedal
and press the “ENGINE START STOP” switch. Modes can
be changed each time the switch is pressed. (P. 158)
To start the engine: Press the “ENGINE START STOP”
switch within 10 seconds after the buzzer sounds, keeping
the clutch pedal depressed.
In the event that the engine still cannot be started, contact any
authorized Lexus dealer or repairer, or another duly qualified and
equipped professional.
STEP1
STEP2
STEP3
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Stopping the engine
For vehicles with an automatic transmission: Shift the shift lever to P and
press the “ENGINE START STOP” switch as you normally do when stop-
ping the engine.
For vehicles with a manual transmission: Shift the shift lever to N position
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 depletes.
(P. 435)
Alarm
Using the mechanical key to lock the doors will not set the alarm system.
If a door is unlocked using the mechanical key when the alarm system is set,
the alarm may be triggered.
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5-2. Steps to take in an emergency
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If the vehicle battery is discharged
The following procedures may be used to start the engine if the vehi-
cle's battery is discharged.
You can call any authorized Lexus dealer or repairer, or another duly
qualified and equipped professional.
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 engine compartment covers. (P. 407)
Connecting the jumper cables
Left-hand vehicles
STEP1
STEP2
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5-2. Steps to take in an emergency
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Right-hand vehicles
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.
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 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 any autho-
rized Lexus dealer or repairer, or another duly qualified and
STEP3
STEP4
STEP5
STEP6