2013 Lexus GS300h key battery

9137-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30D53E_(EE)
If the 12-volt battery is discharged
If you have a set of jumper (or booster) cables and a second vehicle
with a 12-volt battery, you can jump start your vehicle by following
the steps below.
Open the trunk lid and remove
the 12-volt battery cover.
In the event that the trunk opener
cannot be used, use the mechanical
key to open the trunk. (P. 910)
Connect the jumper cables according to the following procedure:
Positive (+) battery terminal on your vehicle
Positive (+) battery terminal on the second vehicle
Negative (-) battery terminal on the second vehicle
Negative (-) battery terminal on your vehicle
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.
The following procedures may be used to start the hybrid system if
the 12-volt battery is discharged.
You can also call any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
1
2
1
2
3
4
3

915
7 7-2. Steps to take in an emergency
When trouble arises
GS450h_300h_OM_OM30D53E_(EE)
When recharging or replacing the 12-volt battery
For vehicles with an alarm: make sure that the key is not inside the vehicle
when recharging or replacing the 12-volt battery. The key may be locked in
the vehicle if the alarm is activated. (P. 99)
In some cases, it may not be possible to unlock the doors using the smart
entry & start system 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 bat-
tery 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 discharged, be especially careful when reconnecting the 12-volt bat-
tery.
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 termi-
nal.
Do not allow the other end of the jumper cable connected to the “+” termi-
nal 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.

957What to do if... (Troubleshooting)
GS450h_300h_OM_OM30D53E_(EE)
Is the electronic key battery weak or depleted? (P. 779)
Vehicles with an entry function
Is the power switch in ON mode?
When locking the doors, turn the power switch off. (P.
247)
Vehicles with an entry function
Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the
electronic key on your person.
The function may not operate properly due to the condi-
tion of the radio wave. (P. 150)
Is the child-protector lock set?
The rear door cannot be opened from inside the vehicle
when the lock is set. Open the rear door from outside and
then unlock the child-protector lock. (P. 184)
The function to prevent the electronic key from being left
inside the trunk will operate and you can open the trunk as
usual. Take the key out from the trunk. (P. 144) The doors cannot be locked or unlocked
The rear door cannot be opened
The trunk lid is closed with the electronic key left inside

958What to do if... (Troubleshooting)
GS450h_300h_OM_OM30D53E_(EE)
Did you press the power switch while firmly depressing
the brake pedal? (P. 247)
Is the shift lever in P? (P. 250)
Is the electronic key anywhere detectable inside the vehi-
cle?
(P. 146)
Is the steering wheel unlocked? (P. 250)
Is the electronic key battery weak or depleted?
In this case, the hybrid system can be started in a tempo-
rary way. (P. 911)
Is the 12-volt battery discharged? (P. 913)
Is the power switch in ON mode?
If you cannot release the shift lever by depressing the
brake pedal with the power switch in ON mode
(P. 906)
If you think something is wrong
The hybrid system does not start
The shift lever cannot be shifted from P even if you depress
the brake pedal
The steering wheel cannot be turned after the hybrid system
is stopped

964Alphabetical index
GS450h_300h_OM_OM30D53E_(EE)
Back-up light
Replacing light bulb .............812
Wattage .................................940
Battery (12-volt battery) ............749
If the 12-volt battery is
discharged ..........................913
Preparing and checking
before winter ......................434
Warning light........................831
Battery (traction battery) .............84
Blind Spot Monitor (BSM) ......418
Bluetooth
®
Audio system ........................567
Hands-free system
(for cellular phone).............611
Brake
Brake Hold ...........................272
Fluid......................................935
Parking brake ........................269
Regenerative braking ..............82
Warning light ................830, 833
Warning message..................839
Brake assist ...............................397
Brake Hold ................................272
Break-in tips .............................226
Brightness control
Instrument panel light control ....
111
BSM (Blind Spot Monitor) .......418
Blind Spot Monitor function 424
Rear Cross Traffic
Alert function .....................427Card key ................................... 138
Care .................................. 720, 724
Aluminum wheels ................ 721
Exterior ................................ 720
Interior ................................. 724
Seat belts .............................. 725
Cargo hooks.............................. 694
Caution label............................... 84
CD player ................................. 536
Chains ....................................... 436
Child restraint system ................. 59
Baby seats, definition ............ 59
Baby seats, installation .......... 72
Child seats, definition ............ 59
Child seats, installation .......... 72
Installing CRS with ISOFIX
rigid anchors ........................ 75
Installing CRS with seat belts 72
Installing CRS with top strap. 76
Junior seats, definition ........... 59
Junior seats, installation......... 74
BC

965Alphabetical index
GS450h_300h_OM_OM30D53E_(EE)
Child safety .................................58
12-volt battery
precautions .................752, 916
Airbag precautions..................47
Child restraint system .............59
How your child should
wear the seat belt ............39, 41
Installing child restraints ........71
Moon roof precautions .........221
Power window lock switch...215
Power window precautions...217
Rear door child-protectors ....184
Removed electronic key
battery precautions .............781
Seat belt comfort guide...........39
Seat belt precautions ...............43
Seat heater precautions .........703
Trunk precautions ................190
Child-protectors ........................184
Cleaning ............................720, 724
Aluminum wheels.................721
Exterior .................................720
Interior ..................................724
Seat belts...............................725Clock ........................................ 698
Coat hooks ................................ 715
Condenser ................................ 747
Console box .............................. 690
Console box light...................... 690
Coolant ..................................... 744
Capacity ............................... 933
Checking .............................. 744
Preparing and checking
before winter ..................... 434
Cooling system ......................... 744
Engine overheating .............. 917
Hybrid system overheating .. 917
Cruise control
Cruise control ...................... 298
Dynamic radar cruise control ....
302
Dynamic radar cruise control
with full-speed range ......... 319
Cup holders............................... 691
Curtain shield airbags ................ 45
Customizable features .............. 943

967Alphabetical index
GS450h_300h_OM_OM30D53E_(EE)
Eco drive mode .........................392
Electric motor (traction motor) ...80
Electric Power Steering (EPS) ..398
Function ................................398
Warning light........................833
Warning message..................845
Electronic key............................138
Battery-saving function ........149
If the electronic key does not
operate properly .................910
Replacing the battery ............779
Emergency, in case of
If a warning buzzer sounds ...830
If a warning light turns on ....830
If a warning message is
displayed ............................839
If the 12-volt battery is
discharged ..........................913
If the electronic key does not
operate properly .................910
If the hybrid system will not
start .....................................904
If the parking brake cannot
be released ..........................907
If the shift lever cannot be
shifted from P .....................906
If you have a flat tire ....871, 885
If you think something
is wrong ..............................829
If your vehicle becomes stuck ....
926
If your vehicle has to be
stopped in an emergency ....821
If your vehicle needs to
be towed .............................822If your vehicle overheats ..... 917
E

971Alphabetical index
GS450h_300h_OM_OM30D53E_(EE)
Jack
Positioning the jack ..............735
Vehicle-equipped jack ..872, 886
Jack handle ........................872, 886
Jam protection function
Moon roof .............................219
Power trunk lid .....................190
Power window ......................216
Keyless entry .............................143
Smart entry & start system ...143
Wireless remote control........168
Keys...........................................138
Battery-Saving Function.......149
Electronic key .......................138
Engine switch .......................246
If the electronic key does not
operate properly .................910
Key number plate .................138
Keyless entry ................143, 168
Mechanical key.....................139
Power switch ........................246
Replacing the battery ............779
Warning buzzer ....................147
Wireless remote control key .168
Knee airbags ................................45Language (multi-information
display)................................... 118
LDH (Lexus Dynamic Handling
system) ................................... 398
Lever
Auxiliary catch lever ........... 734
Hood lock release lever ....... 734
Shift lever ............................ 258
Turn signal lever .................. 267
Wiper lever .......................... 285
Lexus Dynamic Handling system
(LDH)..................................... 398
Lexus night view ...................... 430
Lexus parking assist monitor.... 361
Lexus parking assist-sensor ...... 348
Function ............................... 348
Warning message......... 842, 854
License plate lights ................... 272
Light switch ......................... 272
Replacing light bulbs ........... 818
Welcome light illumination
control ............................... 143
Light bulbs
Replacing ............................. 805
Wattage ................................ 940
J
K
L