2016 Lexus GS350 key battery

520
GS350_200t_GS F_OM_OM30E86U_(U)7-2. Steps to take in an emergency
If the electronic key does not operate properly
■Doors
Use the mechanical key (
P. 1 3 3 )
in order to perform the following
operations:
Locks all the doors
Closes the windows and moon
roof
* (turn and hold)
Unlocks the door
Turning the key rearward unlocks the
driver’s door. Turning the key once
again within 5 seconds unlocks the
other doors.
Opens the windows and moon roof* (turn and hold)
*: This setting must be customized at your Lexus dealer.
■Tr u n k
Turn the mechanical key clockwise
to open.
If communication between the electronic key and vehicle is interrupted
(  P. 152) or the electronic key cannot be used because the battery is
depleted, the smart access system with push-button start and wireless
remote control cannot be used. In su ch cases, the doors and trunk can be
opened and the engine can be started by following the procedure below.
Locking and unlocking the doors, un locking the trunk and key linked
functions
1
2
3
4

5227-2. Steps to take in an emergency
GS350_200t_GS F_OM_OM30E86U_(U)
■Stopping the engine
Shift the shift lever to P and press the engine 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. 4 2 9 )
■Changing engine switch modes
Release the brake pedal and press the engine switch in step above.
The engine does not start and modes w ill be changed each time the switch is
pressed.( P. 1 9 8 )
■When the electronic key does not work properly
●Make sure that the smart access system wi th push-button start has not been deacti-
vated in the custom ization setting. If it is off, turn the function on.
(Customizable features: P. 5 6 8 )
●Check if battery-saving mo de is set. If it is set, cancel the function. ( P. 151)
WA R N I N G
■When using the mechanical key and operating the power windows or moon roof
Operate the power window or moon roof afte r checking to make sure that there is no
possibility of any passenger having any of their body parts caught in the window or
moon roof.
Also, do not allow children to operate the mech anical key. It is possible for children and
other passengers to get caught in the power window or moon roof.
3

523
GS350_200t_GS F_OM_OM30E86U_(U)
7
When trouble arises
7-2. Steps to take in an emergency
If the vehicle 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.
Confirm that the electronic key is being carried.
When connecting the jumper (or booster) cables, depending on the situation, the
alarm may activate and doors locked. ( P. 7 5 )
Open the hood. ( P. 393)
GS200t/GS F: Remove the engine cover.
The following procedures may be used to start the engine if the vehicle’s bat-
tery is discharged.
You can also call your Lexus dealer or a qualified repair shop.
1
GS350/GS200tGS F
2
3
GS200tGS F
Raise the front of the engine cover to
remove the front clips, and then raise
the rear of the engine cover to
remove the rear clips.

5267-2. Steps to take in an emergency
GS350_200t_GS F_OM_OM30E86U_(U)
■Starting the engine when the battery is discharged
The engine cannot be started by push-starting.
■To prevent battery discharge
●Turn off the headlights and the audio system while the engine 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 battery
The electricity stored in the battery will discharge gradually even when the vehicle 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 discharge, and the engine may be
unable to start. (The battery recharges automatically during driving.)
■When recharging or replacing the battery
●In some cases, it may not be possible to unlock the doors using the smart access system
with push-button start when the battery is discharged. Use the wireless remote control
or the mechanical key to lock or unlock the doors.
●The engine may not start on the first attempt after the battery has recharged but will
start normally after the second attempt. This is not a malfunction.
●The engine switch mode is memorized by the vehicle. When the battery is recon-
nected, the system will return to the mode it was in before the battery was discharged.
Before disconnecting the battery, turn the engine switch off.
If you are unsure what mode the engine switch was in before the battery discharged, be
especially careful when reconnecting the battery.

600What to do if... (Troubleshooting)
GS350_200t_GS F_OM_OM30E86U_(U)
What to do if... (Troubleshooting)
●If you lose your mechanical keys, ne w genuine mechanical keys can be made
by your Lexus dealer. ( P. 1 3 4 )
●If you lose your electronic keys, the risk of vehicle theft increases significantly.
Contact your Lexus dealer immediately. ( P. 1 3 5 )
●Is the electronic key battery weak or depleted? ( P. 4 2 9 )
●Is the engine switch in IGNITION ON mode?
When locking the doors, turn the engine switch off. ( P. 1 9 8 )
●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 du e to the condition of the radio wave.
( P. 1 5 2 )
●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. 1 4 0 )
●The function to prevent the electronic ke y from being left inside the trunk will
operate and you can open the trunk as usual. Take the key out from the trunk.
( P. 1 4 5 )
If you have a problem, check the following before contacting your Lexus
dealer.
The doors cannot be locked, unlocked, opened or closed
You lose your keys
The doors cannot be locked or unlocked
The rear door cannot be opened
The trunk lid is closed with the electronic key left inside

601What to do if... (Troubleshooting)
GS350_200t_GS F_OM_OM30E86U_(U)
●Did you press the engine switch while firmly depressing the brake pedal?
(P. 1 9 7 )
●Is the shift lever in P? ( P. 199)
●Is the electronic key anywhere detectable inside the vehicle? ( P. 1 5 0 )
●Is the steering wheel unlocked? ( P. 199)
●Is the electronic key battery weak or depleted?
In this case, the engine can be started in a temporary way. (P. 5 2 1 )
●Is the battery discharged? ( P. 5 2 3 )
●Is the engine switch in IGNITION ON mode?
If you cannot release the shift lever by depressing the brake pedal with the
engine switch in IGNITION ON mode ( P. 5 1 7 )
●It is locked automatically to prevent theft of the vehicle. ( P. 199)
●Is the window lock switch pressed?
The power window except for the one at the driver’s seat cannot be operated
if the window lock switch is pressed. ( P. 1 7 5 )
●The auto power off function will be oper ated if the vehicle is left in ACCES-
SORY or IGNITION ON mode (the engine is not running) for a period of
time. ( P. 199)
If you think something is wrong
The engine 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 engine is stopped
The windows do not open or close by operating the power window
switches
The engine switch is turned off automatically

605Alphabetical index
GS350_200t_GS F_OM_OM30E86U_(U)
Approach warning....................273, 285
Armrest .................................................... 360
Armrest door ......................................... 363
ASC (Active Sound Control) ........... 214
Ashtrays.................................................... 359
Assist grips .............................................. 364
Audio input
*
Audio system*
Automatic headlight leveling system ...................................................... 217
Automatic light control system.........215
Automatic transmission ..................... 202 If the shift lever cannot be shifted from P .................................... 517
M mode ................................................. 205
Paddle shift switches ........................204
AUX port
*
Auxiliary boxes ...................................... 353
AVS (Adaptive Variable Suspension system).......................... 309
Back-up lights Replacing light bulbs ........................439
Battery........................................................ 410
Battery checking.................................... 410 If the vehicle battery is discharged .........................................523
Preparing and checking before winter ..................................................... 316
Warning light .......................................452 Blind Spot Monitor (BSM) ............... 298
Blind Spot Monitor function.......... 301
Rear Cross Traffic Alert function................................................303
Bluetooth
®*
Brake Fluid ..........................................................409
Parking brake ........................................210
Warning light ........................... 452, 454
Warning message............................. 459
Brake assist ............................................. 308
Brake Hold................................................ 212
Break-in tips .............................................183
Brightness control Instrument panel light control ........ 89
BSM (Blind Spot Monitor) ............... 298 Blind Spot Monitor function.......... 301
Rear Cross Traffic Alert function................................................303
Card key .................................................... 132
Care................................................ 378, 382 Aluminum wheels .............................. 379
Exterior ................................................... 378
Interior ..................................................... 382
Seat belts................................................383
Cargo capacity ....................................... 194
Cargo hooks .......................................... 354
CD player
*
Chains ......................................................... 317
B
C
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.

606Alphabetical index
GS350_200t_GS F_OM_OM30E86U_(U)
Child restraint system............................ 59Booster seats, definition ....................59
Booster seats, installation.................. 67
Convertible seats, definition ............59
Convertible seats, installation .........65
Front passenger occupant classification system ......................... 52
Infant seats, definition ..........................59
Infant seats, installation .......................65
Installing CRS with LATCH anchors ..................... 64
Installing CRS with seat belts ..........65
Installing CRS with top tether strap .........................68
Child safety ................................................ 58 Airbag precautions .............................. 44
Battery precautions ................. 411, 527
Child restraint system .........................59
How your child should wear the seat belt ................................. 37, 38
Installing child restraints..................... 63
Moon roof precautions....................180
Power window lock switch ............ 175
Power window precautions ........... 177
Rear door child-protectors ........... 140
Removed electronic key battery precautions.............. 430
Seat belt comfort guide ..................... 37
Seat belt extender precautions ......40
Seat belt precautions .......................... 62
Seat heater precautions.................. 342
Trunk precautions............................... 146 Child-protectors .................................... 140
Cleaning .......................................378, 382
Aluminum wheels .............................. 379
Exterior ................................................... 378
Interior ..................................................... 382
Seat belts................................................383
Clock................................................. 87, 359
Coat hooks ............................................. 364
Condenser .............................................. 408
Console box ............................................. 351
Console box light ................................... 351
Consumption screen ............................ 128
Cooling system ..................................... 406 Engine overheating ..........................528
Consumption screen ............................ 127
Cruise control Cruise control ..................................... 290
Dynamic radar cruise control ..... 278
Dynamic radar cruise control with full-speed range ................... 266
Cup holders............................................ 352
Curtain shield airbags ............................42
Customizable features ...................... 568
Daytime running light system............ 216
Defogger Front windshield ................................. 334
Outside rear view mirrors ............ 334
Rear window ........................................ 334
Differential Front differential .................................548
Rear differential................................... 549
D