2013 Lexus GS450h Ev mode

7427-2. Steps to take in an emergency
GS450h_U (OM30D01U)After taking the specified steps to correct the suspected problem, check
that the warning message and light go off.
Have the malfunction repaired immediately.
Interior
buzzerExterior
buzzerWarning messageDetailsCorrection procedure
Once
The electronic key
is not detected
when an attempt is
made to start the
hybrid system.Start the
hybrid sys-
tem with the
electronic
key present.
Once3
times
The electronic key
was carried out-
side the vehicle and
a door other than
the driver’s door
was opened and
closed while the
power switch was in
a mode other than
off.
Bring the
electronic
key back
into the
vehicle.
The driver’s door
was opened and
closed while the
electronic key was
not in the vehicle,
the shift lever was in
P and the power
switch was not
turned off.Tu r n t h e
power
switch off or
bring the
electronic
key back
into the
vehicle.
(Flashes)
(Flashes)
GS450h_U.book Page 742 Monday, January 23, 2012 10:20 AM

7477-2. Steps to take in an emergency
GS450h_U (OM30D01U)
7
When trouble arises
InteriorbuzzerExterior
buzzerWarning messageDetailsCorrection procedure
Once
The driver’s door
was opened and
closed with the
power switch
turned off and then
the power switch
was put in ACCES-
SORY mode twice
without the hybrid
system being
started.
Press the
power
switch while
depressing
the brake
pedal.
During an hybrid
system starting pro-
cedure in the event
that the electronic
key was not func-
tioning properly
( → P. 76 8 ) , t h e
power switch was
touched with the
electronic key.
Press the
power
switch
within 10
seconds of
the buzzer
sounding.
Once
The steering lock
could not be
released within 3
seconds of the
power switch being
pressed.
Press the
power
switch while
depressing
the brake
pedal and
moving the
steering
wheel left
and right.
Once
The power switch
has been turned off
with the shift lever
in a position other
than P or N.
Shift the
shift lever to
P.
(Flashes)
(Flashes)
(Flashes)
GS450h_U.book Page 747 Monday, January 23, 2012 10:20 AM

7637-2. Steps to take in an emergency
GS450h_U (OM30D01U)
7
When trouble arises
One of the following may be the cause of the problem:
●One or both of the 12-volt battery terminals may be disconnected.
●The 12-volt battery may be discharged. (→P. 7 7 0 )
Contact your Lexus dealer if the problem cannot be repaired, or if repair proce-
dures are unknown.
When the hybrid system does not start, the following steps can be used as
an interim measure to start the hybrid system if the power switch is func-
tioning normally:
Set the parking brake.
Shift the shift lever to P.
Turn the power switch to ACCESSORY mode.
Press and hold the power switch for about 15 seconds while depressing
the brake pedal firmly.
Even if the hybrid system can be started using the above steps, the system
may be malfunctioning. Have the vehicle inspected by your Lexus dealer.
The interior lights and headlights do not turn on, or the horn does
not sound.
Emergency start function
1
2
3
4
GS450h_U.book Page 763 Monday, January 23, 2012 10:20 AM

764
GS450h_U (OM30D01U)
7-2. Steps to take in an emergency
If the shift lever cannot be shifted from P
Set the parking brake.
Turn the power switch to ACCESSORY mode.
Depress the brake pedal.
Pry the cover up with a flathead
screwdriver or equivalent tool.
To prevent damage to the cover, cover
the tip of the screwdriver with a rag.
Press the shift lock override but-
ton.
The shift lever can be shifted while the
button is pressed.
If the shift lever cannot be shifted with your foot on the brake pedal,
there may be a problem with the shift lock system (a system to prevent
accidental operation of the shift lever). Have the vehicle inspected by
your Lexus dealer immediately.
The following steps may be used as an emergency measure to ensure
that the shift lever can be shifted:
1
2
3
4
5
GS450h_U.book Page 764 Monday, January 23, 2012 10:20 AM

7687-2. Steps to take in an emergency
GS450h_U (OM30D01U)
■Tr u n k
Turn the mechanical key clock-
wise to open.
Ensure that the shift lever is in P and depress the brake pedal.
Touch the Lexus emblem side of
the electronic key to the power
switch.
The power switch will turn to ON
mode.
When the smart access system with
push-button start is deactivated in
customization setting, the power
switch will turn to ACCESSORY
mode.
Firmly depress the brake pedal and check that is shown on the
multi-information display.
Press the power switch.
In the event that the hybrid system still cannot be started, contact your
Lexus dealer.
Starting the hybrid system
1
2
3
4
GS450h_U.book Page 768 Monday, January 23, 2012 10:20 AM

7697-2. Steps to take in an emergency
GS450h_U (OM30D01U)
7
When trouble arises
■Stopping the hybrid system
Shift the shift lever to P and press the power switch as you normally do when stop-
ping the hybrid system.
■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 is depleted. (→P. 668)
■Changing power switch modes
Release the brake pedal and press the power switch in step above.
The hybrid system does not start and modes will be changed each time the switch is
pressed.( →P. 1 9 0 )
■When the electronic key does not work properly
●Make sure that the smart access system with push-button start has not been deac-
tivated in the customization setting. If it is off, turn the function on.
(Customizable features →P. 807)
●Check if battery-saving mode is set. If it is set, cancel the function. ( →P. 1 2 7 )
3
GS450h_U.book Page 769 Monday, January 23, 2012 10:20 AM

7717-2. Steps to take in an emergency
GS450h_U (OM30D01U)
7
When trouble arises
Start the engine of the second vehicle. Increase the engine speed
slightly and maintain at that level for approximately 5 minutes to
recharge the 12-volt battery of your vehicle.
Open and close any of the doors of your vehicle with the power switch
off.
Maintain the engine speed of the second vehicle and start the hybrid
system of your vehicle by turning the power switch to ON mode.
Make sure the “READY” indicator comes on. If the indicator does not
come on, contact your Lexus dealer.
Once the hybrid system has started, remove the jumper cables in the
exact reverse order from which they were connected.
Once the hybrid system starts, have the vehicle inspected at your Lexus
dealer as soon as possible.
■Starting the hybrid system when the 12-volt battery is discharged
The hybrid system cannot be started by push-starting.
■To prevent 12-volt battery discharge
●Turn off the headlights and the audio system while the hybrid system is 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.
■Charging the 12-volt battery
The electricity stored in the 12-volt battery will discharge gradually even when the
vehicle is not in use, due to natural discharge and the draining effects of certain elec-
trical appliances. If the vehicle is left for a long time, the 12-volt battery may dis-
charge, and the hybrid system may be unable to start. (The 12-volt battery recharges
automatically while the hybrid system is operating.)
3
4
5
6
7
GS450h_U.book Page 771 Monday, January 23, 2012 10:20 AM

7727-2. Steps to take in an emergency
GS450h_U (OM30D01U)
■When recharging or replacing the 12-volt battery
●Make sure the key is not inside the vehicle when recharging or replacing the 12-volt
battery to prevent the doors from being locked with the key left inside the vehicle
when the alarm operates.
●In some cases, it may not be possible to unlock the doors using the smart access
system with push-button start when the 12-volt battery is discharged. Use the wire-
less remote control or the mechanical key to lock or unlock the doors.
●The hybrid system may not start on the first attempt after the 12-volt battery has
recharged but will start normally after the second attempt. This is not a malfunction.
●The power switch mode is memorized by the vehicle. When the 12-volt battery is
reconnected, the system will return to the mode it was in before the 12-volt battery
was discharged. Before disconnecting the 12-volt battery, turn the power switch off.
If you are unsure what mode the power switch was in before the 12-volt battery dis-
charged, be especially careful when reconnecting the 12-volt battery.
CAUTION
■Avoiding 12-volt battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flammable
gas that may be emitted from the 12-volt battery:
●Make sure each jumper cable is connected to the correct terminal and that it is
not unintentionally in contact with any other than the intended terminal.
●Do not allow the other end of the jumper cable connected to the “+” terminal to
come into contact with any other parts or metal surfaces in the area, such as
brackets or unpainted metal.
●Do not allow the + and - clamps of the jumper cables to come into contact with
each other.
●Do not smoke, use matches, cigarette lighters or allow open flame near the 12-
volt battery.
GS450h_U.book Page 772 Monday, January 23, 2012 10:20 AM