2015 Lexus IS200t key battery

5528-2. Steps to take in an emergency
IS200t_EE(OM53D19E)
■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 6 6 )
■Alarm (if equipped)
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.
■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 9 7 )
■When the electronic key does not work properly
●Make sure that the smart entry & start syst em has not been deactivated in the customi-
zation setting. If it is off, turn the function on.
(Customizable features →P. 5 76 )
●Check if battery-saving mode is set. If it is set, cancel the function. (→P. 1 3 5 )
CAUTION
■When using the mechanical key and operating the power windows or moon roof
Operate the power window or moon roof after 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 mechanical key. It is possible for children and
other passengers to get caught in the power window or moon roof.
3

5538-2. Steps to take in an emergency
8
When trouble arises
IS200t_EE(OM53D19E)
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. 8 5 )
Open the hood. ( →P. 4 3 9 )
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 any authorized Lexus dealer or repairer, or another duly
qualified and equipped professional.
1
2

5558-2. Steps to take in an emergency
8
When trouble arises
IS200t_EE(OM53D19E)
Once the engine starts, have the vehicle inspected at any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional as soon
as possible.
■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 stopped. (Vehicles with
a Stop & Start system: except when the engine is stopped by the Stop & Start system.)
●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 disc harge 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 un lock the doors using the smart entry & start
system when the battery is discharged. Use the wireless remote control or the mechan-
ical 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.
●Vehicles with Stop & Start system:
After charging the battery or reconnecting the battery terminals, the Stop & Start sys-
tem may not automatically stop the engine for approximately 30 to 60 minutes.
■When exchanging the battery (vehicles with Stop & Start system)
Use a battery specified for use with the Stop & Start system and equivalent to a genuine
battery. If an unsupported battery is used, Stop & Start system functions may be
restricted to protect the battery.
Also, battery performance may decrease and the engine may not be able to restart.
Contact any authorized Lexus dealer or Lexus authorized repairers, or any reliable
repairers for details.

588
IS200t_EE(OM53D19E)What to do if... (Troubleshooting)
What to do if... (Troubleshooting)
●If you lose your mechanical keys, new genuine mechanical keys can be made
by any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional. (
→P. 118)
●If you lose your electronic keys, the risk of vehicle theft increases significantly.
Contact any authorized Lexus dealer or repairer, or another duly qualified
and equipped professional immediately. ( →P. 1 2 1 )
●Is the electronic key battery weak or depleted? ( →P. 466)
●Is the engine switch in IGNITION ON mode?
When locking the doors, turn the engine switch off. ( →P. 1 9 7 )
●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 condition of the radio wave.
(→ P. 136)
●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 2 6 )
If you have a problem, check the foll owing before contacting any authorized
Lexus dealer or repairer, or another duly qualified and equipped professional.
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

589What to do if... (Troubleshooting)
IS200t_EE(OM53D19E)
●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. 131)
●Did you press the engine switch while firmly depressing the brake pedal?
(→ P. 1 9 6 )
●Is the shift lever in P? ( →P. 1 9 8 )
●Is the electronic key anywhere detectable inside the vehicle? ( →P. 1 3 4 )
●Is the steering wheel unlocked? ( →P. 1 9 8 )
●Is the electronic key battery weak or depleted?
In this case, the engine can be started in a temporary way. ( →P. 5 5 1 )
●Is the battery discharged? ( →P. 5 5 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. 549)
●It is locked automatically to prevent theft of the vehicle. ( →P. 1 9 8 )
The trunk lid is closed with the electronic key left inside
If you think som
ething 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

594Alphabetical index
IS200t_EE(OM53D19E)
Card key...................................................... 116
Care ............................................... 428, 432Aluminum wheels .............................. 429
Exterior....................................................428
Interior ..................................................... 432
Seat belts................................................ 433
Cargo hooks ............................................ 418
CD player ................................................340
Chains ........................................................ 310
Child restraint system ............................58 Baby seats, definition .......................... 59
Baby seats, installation .......................68
Child seats, definition.......................... 59
Child seats, installation.......................68
Installing CRS with ISOFIX
rigid anchors.......................................... 71
Installing CRS with seat belts..........68
Installing CRS with top strap ...........72
Junior seats, definition ........................ 59
Junior seats, installation ..................... 70
Child safety................................................. 57
Airbag precautions .............................. 43
Battery precautions ............. 449, 556
Child restraint system.........................58
How your child should wear the seat belt ..............................38
Installing child restraints .................... 67 Moon roof precautions .................... 176
Power window lock switch ............169
Power window precautions............. 171
Rear door child-protectors ............ 126
Removed electronic key
battery precautions....................... 468
Seat belt precautions.......................... 40
Seat heater precautions ................. 409
Trunk precautions .............................. 132
Child-protectors ....................................126
Cleaning........................................428, 432 Aluminum wheels.............................. 429
Exterior ................................................... 428
Interior......................................................432
Seat belts ............................................... 433
Clock ...........................................................421
Coat hooks.............................................. 425
Condenser ............................................. 446
Console box .............................................415
Cooling system ..................................... 445
Engine overheating .......................... 557
Cruise control
Cruise control ..................................... 240
Dynamic radar cruise control ......244
Cup holders ..............................................416
Current fuel consumption ..................102
Curtain shield airbags ............................ 41
Customizable features........................577
C

596Alphabetical index
IS200t_EE(OM53D19E)
E-mail ......................................................... 374
Eco drive mode .....................................283
Eco Driving Indicator ........................... 107
Eco Driving Indicator Light ............... 104
Elapsed time ............................................ 102
Electric Power Steering (EPS)........285Function ..................................................285
Warning light ........................................ 501
Electronic key............................................ 116
Battery-saving function.................... 135
If the electronic key does not operate properly ........................... 550
Replacing the battery.......................466
Emergency, in case of If a warning message is
displayed ........................................... 506
If the electronic key does not
operate properly ........................... 550
If the engine will not start ............... 547
If the shift lever cannot be shifted from P ...................................549
If the vehicle battery is discharged.........................................553
If the warning buzzer sounds ..... 500
If the warning light turns on ......... 500
If you have a flat tire ..............522, 533
If you think something is wrong.............................................. 498
If your vehicle becomes stuck...... 561
If your vehicle has to be stopped in an emergency............491
If your vehicle needs to be towed............................................. 492
If your vehicle overheats ................557 Emergency brake signal.................... 286
Emergency flashers ............................. 490
Emergency tire puncture
repair kit ................................................ 533
Engine ....................................................... 566 ACCESSORY mode ....................... 197
Compartment ....................................... 441
Engine switch ........................................ 196
Hood ....................................................... 439
How to start the engine ................... 196
Identification number.......................565
If the engine will not start ............... 547
Ignition switch (engine switch) ..... 196
Overheating ........................................ 557
Engine coolant....................................... 445 Capacity................................................. 569
Checking ............................................... 445
Preparing and checking
before winter.................................... 309
Engine coolant temperature
gauge ........................................................ 95
Engine immobilizer system .................. 77
Engine oil ................................................. 442 Capacity................................................. 567
Checking ................................................442
Preparing and checking
before winter.................................... 309
Engine oil maintenance data ........... 444
Engine switch ...........................................196
EPS (Electric Power Steering) ....... 285
Function.................................................. 285
Warning light.........................................501
E

599Alphabetical index
IS200t_EE(OM53D19E)
IdentificationEngine..................................................... 565
Vehicle ................................................... 565
Ignition switch (engine switch) ......... 196
Illuminated entry system ..................... 412
Indicators..................................................... 92
Initialization Engine oil maintenance data ....... 444
Moon roof ...............................................175
Multi-information display ................ 104
Power windows....................................170
Tire pressure warning system ..................................................453
Inside door handle lights ....................... 411
Inside rear view mirror ........................ 163
Instrument panel light control ............98
Intercooler ............................................... 446
Intercooler coolant .............................. 445 Capacity ................................................ 569
Checking ...............................................445
Preparing and checking
before winter ................................... 309
Interior lights ............................................ 412
Wattage.................................................. 573
Intrusion sensor and tilt sensor ..........86
ISOFIX rigid anchors............................. 67
Jack
Positioning the jack...........................440
Vehicle-equipped jack .......523, 534
Jack handle .................................. 523, 534
Jam protection function Moon roof ............................................... 174
Power window ......................................170 Keyless entry
Smart entry & start system.......................................... 122, 129
Wireless remote control ....... 122, 129
Keys............................................................... 116
Battery-Saving Function .................. 135
Electronic key..........................................116
Engine switch ........................................ 196
If the electronic key does not operate properly ............................550
Key number plate..................................116
Keyless entry................................ 122, 129
Mechanical key ...................................... 117
Replacing the battery ...................... 466
Warning buzzer................................... 123
Wireless remote control ...................116
Knee airbags ............................................... 41
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