4317-3. Do-it-yourself maintenance
7
Maintenance and care
IS350/300/200t_U (OM53D18U)
Check the battery as follows.
■Battery exterior
Make sure that the battery terminals are not corroded and that there are no
loose connections, cracks, or loose clamps.Te r m i n a l s
Hold-down clamp
■Before recharging
When recharging, the battery produces hydrogen gas which is flammable and explosive.
Therefore, observe the following before recharging:
●If recharging with the battery installed on the vehicle, be sure to disconnect the ground
cable.
●Make sure the power switch on the charger is off when connecting and disconnecting
the charger cables to the battery.
■After recharging/reconnecting the battery
The engine may not start. Follow the proc edure below to initialize the system.
Shift the shift lever to P.
Open and close any of the doors.
Restart the engine.
●Unlocking the doors using the smart access system with push-button start may not be
possible immediately after reconnecting the battery. If this happens, use the wireless
remote control or the mechanical key to lock/unlock the doors.
●Start the engine with the engine switch in ACCESSORY mode. The engine may not
start with the engine switch turned off. However, the engine will operate normally from
the second attempt.
●The engine switch mode is recorded by the vehicle. If the battery is disconnected and
reconnected, the vehicle will return the engi ne switch mode to the status it was in
before the battery was disconnected. Make su re to turn off the engine before discon-
necting the battery. Take extra care when connecting the battery if the engine switch
mode prior to the battery be ing disconnected is unknown.
If the system will not start even after mult iple attempts, contact your Lexus dealer.
Battery
1
2
1
2
3
4517-3. Do-it-yourself maintenance
7
Maintenance and care
IS350/300/200t_U (OM53D18U)
■Use a CR2032 lithium battery
●Batteries can be purchased at your Lexus dealer, local electrical appliance shops or
camera stores.
●Replace only with the same or equivalent type recommended by the manufacturer.
●Dispose of used batteries according to local laws.
■When the card key battery needs to be replaced (if equipped)
The battery for the card key is available only at Lexus dealers. Your Lexus dealer can
replace the battery for you.
■If the electronic key battery is depleted
The following symptoms may occur:
●The smart access system with push-button start and wireless remote control will not
function properly.
●The operational range will be reduced.
CAUTION
■Removed battery and other parts
These parts are small and if swallowed by a child, they can cause choking. Keep away
from children. Failure to do so could result in death or serious injury.
NOTICE
■For normal operation afte r replacing the battery
Observe the following precautions to prevent accidents:
●Always work with dry hands.
Moisture may cause the battery to rust.
●Do not touch or move any other component inside the remote control.
●Do not bend either of the battery terminals.
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
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.
5559-2. Customization
9
Vehicle specifications
IS350/300/200t_U (OM53D18U)
■Smart access system with push-button start and wireless remote control
( P. 105, 111)
■Smart access system with push-button start ( P. 105, 111, 116)
FunctionDefault settingCustomized setting
Operation buzzer volume5OffO—O1 to 7
Operation signal (Emer-
gency flashers)OnOffO—O
Time elapsed before auto-
matic door lock function is
activated if door is not
opened after being
unlocked
60 seconds
Off
O—O30 seconds
120 seconds
Open door warning buzzerOnOff——O
Welcome light illumination
controlOnOff——O
123
FunctionDefault settingCustomized setting
Smart access system with
push-button startOnOff——O
Smart door unlockingDriver’s doorAll the doorsO—O
Number of consecutive
door lock operations2 timesAs many as desired——O
123
5609-2. Customization
IS350/300/200t_U (OM53D18U)
■Vehicle customization
●When the smart access system with push-but ton start is off, the entry unlock function
cannot be customized.
●When the doors remain closed after unlocking the doors and the timer activated auto-
matic door lock function activates, signals will be generated in accordance with the
operation buzzer volume and operational si gnal (Emergency flashers) function set-
tings.
●Some settings can be changed using a switch or the audio system screen. If a setting is
changed using a switch, the changed setting will not be reflected on the audio system
screen until the engine switch is turn ed off and then to IGNITION ON mode.
■When customizing using the Remote Touch or Lexus Display Audio controller
Stop the vehicle in a safe place, apply the parking brake, and shift the shift lever to P. Also,
to prevent battery discharge, leave the engi ne running while customizing the features.
CAUTION
■During customization
As the engine needs to be running during customization, ensure that the vehicle is
parked in a place with adequate ventilation. In a closed area such as a garage, exhaust
gases including harmful carbon monoxide (CO) may collect and enter the vehicle. This
may lead to death or a serious health hazard.
NOTICE
■During customization
To prevent battery discharge, ensure that the engine is running while customizing fea-
tures.
588Alphabetical index
IS350/300/200t_U (OM53D18U)
I/M test ...................................................... 418
IdentificationEngine ......................................................526
Vehicle ................................................... 525
Ignition switch (engine switch)..........164
Illuminated entry system .................... 379
Immobilizer system ................................. 69
Indicators .................................................... 78
Initialization Engine oil maintenance data........ 427
Maintenance.......................................... 413
Moon roof .............................................. 146
Multi-information display ..................89
Power windows ....................................142
Tire pressure warning system................................435
Initiators (tire pressure warning system)...................................441
Inside door handle lights ................... 378
Inside rear view mirror .........................136
Instrument panel light control ............ 84
Intercooler............................................... 429
Intercooler coolant .............................. 428 Capacity .................................................. 531
Checking................................................428
Preparing and checking before winter ....................................270
Interior lights........................................... 379 Wattage ................................................. 536
Intuitive parking assist......................... 223 Jack
Positioning a floor jack.................... 422
Vehicle-equipped jack ................... 497
Jack handle ................................................. 497
Jam protection function Moon roof ...............................................145
Power windows.................................... 142
Keyless entry Smart access system with push-button start............ 105, 111
Wireless remote control.......... 105, 111
Keys ............................................................ 100 Battery-saving function ......................117
Electronic key ....................................... 100
Engine switch ........................................164
If the electronic key does not operate properly ....... 509
Key number plate ............................... 100
Keyless entry ......................................... 100
Mechanical key...................................... 101
Replacing the battery ......................450
Warning buzzer.................................. 106
Wireless remote control................. 100
Knee airbags ..............................................36
IJ
K
597Alphabetical index
IS350/300/200t_U (OM53D18U)
Tools........................................................... 497
Top tether strap........................................ 65
Total load capacity .................................. 161
TowingDinghy towing ...................................... 163
Emergency towing ........................... 468
Towing eyelet.........................................471
Trailer towing ........................................ 162
TRAC (Traction Control) ................. 249
Transmission .............................................169 Automatic transmission ................... 169
Driving mode select switch ..........246
If the shift lever cannot be shifted from P .................................. 508
M mode .................................................... 172
Paddle shift switches ........................... 171
Trip meters ...................................................81 Trunk .............................................................. 111
Internal trunk release lever ...............113
Luggage security system...................112
Smart access system with push-button start....................... 111
Trunk features......................................385
Trunk handle ............................................112
Trunk light..................................................113
Trunk opener main switch ................112
Trunk opener switch ............................. 111
Wireless remote control..................... 111
Trunk light................................................... 113 Wattage .................................................536
Turn signal lights ..................................... 175 Replacing light bulbs ................ 457, 459, 460, 463
Turn signal lever ................................... 175
Wattage .................................................536
*: For vehicles with a navigation system, refer to the
“NAVIGATION SYSTEM OWNER’S MANUAL”.