2016 Lexus IS200t key battery

5098-2. Steps to take in an emergency
8
When trouble arises
IS350/300/200t_U (OM53D18U)
■Doors
Use the mechanical key (P. 1 0 1 ) i n
order to perform the following oper-
ations:
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 the electronic key does not operate properly
If communication between the electronic key and vehicle is interrupted ( P.
118) or the electronic key cannot be us ed because the battery is depleted, the
smart access system with push-button start and wireless remote control can-
not be used. In such 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

5118-2. Steps to take in an emergency
8
When trouble arises
IS350/300/200t_U (OM53D18U)
■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 5 0 )
■Changing engine switch modes
Release the brake pedal and press the engine switch in step above.
The engine does not start and modes will be changed each time the switch is pressed.
( P. 1 6 5 )
■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 5 2 )
●Check if battery-saving mo de is set. If it is set, cancel the function. ( P. 117)
CAUTION
■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

5128-2. Steps to take in an emergency
IS350/300/200t_U (OM53D18U)
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 situa-
tion, the alarm may activate and doors
locked. (
P. 7 2 )
Open the hood ( P. 4 2 1 )
IS350/IS300: Remove the engine cover.
Raise the rear of the engine cover to
remove the rear clip, and then raise
the front of the engine cover to
remove the two front clips.
Connect the jumper cables according to the following procedure:
IS350/IS300
If the vehicle battery is discharged
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
2
3
4

5148-2. Steps to take in an emergency
IS350/300/200t_U (OM53D18U)
■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.

576
IS350/300/200t_U (OM53D18U)What to do if... (Troubleshooting)
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 0 2 )
●If you lose your electronic keys, the risk of vehicle theft increases significantly.
Contact your Lexus dealer immediately. ( P. 1 0 4 )
●Is the electronic key battery weak or depleted? ( P. 4 5 0 )
●Is the engine switch in IGNITION ON mode?
When locking the doors, turn the engine switch off. ( P. 1 6 5 )
●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 1 8 )
●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 0 8 )
●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 1 3 )
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

577What to do if... (Troubleshooting)
IS350/300/200t_U (OM53D18U)
●Did you press the engine switch while firmly depressing the brake pedal?
(P. 1 6 4 )
●Is the shift lever in P? ( P. 166)
●Is the electronic key anywhere detectable inside the vehicle? ( P. 1 1 6 )
●Is the steering wheel unlocked? ( P. 1 6 6 )
●Is the electronic key battery weak or depleted?
In this case, the engine can be started in a temporary way. (P. 5 1 0 )
●Is the battery discharged? ( P. 5 1 2 )
●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 0 8 )
●It is locked automatically to prevent theft of the vehicle. ( P. 1 6 6 )
●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. 141)
●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. 1 6 6 )
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

583Alphabetical index
IS350/300/200t_U (OM53D18U)
Child safety ................................................ 53Airbag precautions .............................. 39
Battery precautions ............... 432, 515
Child restraint system ......................... 54
How your child should wear the seat belt .......................................... 32
Installing child restraints.................... 58
Moon roof precautions.....................147
Power window lock switch .............. 141
Power window precautions .......... 143
Rear door child-protectors ...........108
Removed electronic key battery precautions................ 451
Seat belt extender precautions ...........................................35
Seat belt precautions .......................... 57
Seat heater precautions..................376
Trunk precautions................................. 114
Child-protectors.................................... 108 Cleaning .......................................406, 409
Aluminum wheels .............................. 407
Exterior ...................................................406
Interior .....................................................409
Seat belts..................................................410
Clock......................................................... 387
Coat hooks ............................................... 391
Compass ..................................................397
Condenser ...............................................429
Console box ........................................... 382
Cooling system ..................................... 428 Engine overheating ............................516
Cruise control Cruise control ...................................... 198
Dynamic radar cruise control ..... 202
Cup holders............................................ 383
Current fuel consumption ....................87
Curtain shield airbags ............................ 37
Customizable features ...................... 552

585Alphabetical index
IS350/300/200t_U (OM53D18U)
E-mail.........................................................338
Eco drive mode ..................................... 246
Eco Driving Indicator...............................91
Eco Driving Indicator Light ................. 89
EDR (Event data recorder) ...................10
Elapsed time .............................................. 87
Electric Power Steering (EPS) ....... 250Function ................................................. 250
Warning light ....................................... 477
Electronic key ......................................... 100 Battery-saving function ...................... 117
If the electronic key does not operate properly............................ 509
Replacing the battery ...................... 450 Emergency, in case of
If a warning message is displayed ........................................ 482
If the electronic key does not operate properly ....... 509
If the engine will not start .............. 506
If the shift lever cannot be shifted from P ........... 508
If the vehicle battery is discharged........................................... 512
If the warning buzzer sounds ................................................. 476
If the warning light turns on .......... 476
If you have a flat tire .......................... 496
If you think something is wrong .............................................. 474
If your vehicle becomes stuck......................................................520
If your vehicle has to be stopped in an emergency.......... 467
If your vehicle needs to be towed .......................................468
If your vehicle overheats ..................516
E