
7108-2. Steps to take in an emergency
RX350/RX200t_EE_OM48F32E
■Unlocking the door
Use the mechanical key ( P. 135) in order to perform the following opera-
tions:
Insert the mechanical key while
pulling on the driver’s door han-
dle.
Unlocking the door.
Remove the key, return the handle, and then pull the handle again.
If the electronic key does not operate properly
If communication between the electronic key and vehicle is interrupted
( P. 170) or the electronic key cannot be used because the battery is
depleted, the smart entry & start system and wireless remote control cannot
be used. In such cases, the doors can be opened and the engine can be
started by following the procedure below.
Locking and unlocking the doors
1
2
3

7138-2. Steps to take in an emergency
8
When trouble arises
RX350/RX200t_EE_OM48F32E
■Stopping the engine
Shift the shift lever to P, set the parking brake, and press the engine switch as you nor- mally do when stopping the engine.
■Replacing the key battery
As the above procedure is a temporary measur e, it is recommended that the electronic key battery be replaced immediately when the battery is depleted. ( P. 638)
■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. ( P. 83)
■Changing engine switch modes
Release the brake pedal and press the engine switch in step above.
The engine does not start an d modes will be changed each time the switch is pressed.
( P. 247)
■When the electronic key does not work properly
●Make sure that the smart entry & start system has not been deactivated in the
customization setting. If it is off, turn the function on. (Customizable features P. 743)
●Check if battery-saving mode is set. If it is set, cancel the function. (P. 170)
WARNING
■When using the mechanical key and operating the power windows or the moon roof
or panoramic moon roof
Operate the power window or the moon roof or panoramic 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 the moon roof or panoramic moon roof. Also, do not allow children to operate the me chanical key. It is possible for children and other passengers to get caught in the powe r window or the moon roof or panoramic
moon roof.
3

7148-2. Steps to take in an emergency
RX350/RX200t_EE_OM48F32E
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.
Vehicles with an alarm: When connect- ing the jumper (or booster) cables,depending on the situation, the alarm
may activate and doors locked. ( P. 84)
Open the hood (P. 597).
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

7168-2. Steps to take in an emergency
RX350/RX200t_EE_OM48F32E
Start the engine of the second vehicle. Increase the engine speed slightly and
maintain at that level for approximately 5 minutes to recharge the battery of
your vehicle.
Open and close any of the doors of your vehicle with the engine switch off.
Maintain the engine speed of the second vehicle and start the engine of your
vehicle by turning the engine switch to IGNITION ON mode.
Once the vehicle’s engine has started, remove the jumper cables in the exact
reverse order from which they were connected.
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. (RX200t: 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 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 beunable to start. (The battery recharges automatically during driving.)
■When the battery is removed or discharged
●In some cases, it may not be possible to unlock the doors using the smart entry & startsystem when the battery is discharged. Us e 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 power back door: The power back door must be initialized. (P. 159)
●RX200t: After the battery terminals have been disconnected then reconnected or the battery has been replaced, the Stop & Start system may not automatically stop theengine for approximately 5 to 60 minutes.
4
5
6
7

754
RX350/RX200t_EE_OM48F32E
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. 136)
●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. 138)
●Is the electronic key battery weak or depleted? (P. 638)
●Is the engine switch in IGNITION ON mode?
When locking the doors, turn the engine switch off. ( P. 247)
●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. 170)
●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. 143)
If you have a problem, check the following 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

755What to do if... (Troubleshooting)
RX350/RX200t_EE_OM48F32E
●Did you press the engine switch while firmly depressing the brake pedal?
( P. 246)
●Is the shift lever in P? (P. 248)
●Is the electronic key anywhere detectable inside the vehicle? (P. 168)
●Is the steering wheel unlocked? (P. 248)
●Is the electronic key battery weak or depleted?
In this case, the engine can be started in a temporary way. ( P. 712)
●Is the battery discharged? (P. 714)
●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. 256)
●It is locked automatically to prevent theft of the vehicle. (P. 248)
●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. 210)
●The auto power off function will be operated if the vehicle is left in
ACCESSORY or IGNITION ON mode (the engine is not running) for a
period of time. ( P. 248)
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

760Alphabetical index
RX350/RX200t_EE_OM48F32E
Back door
Back door................................................146
Power back door.................................. 151
Touchless power back door......... 153
Wireless remote control ................... 151
Back-up lights
Replacing light bulbs........................ 643
Wattage..................................................738
Battery
Battery checking ................................607
If the battery is discharged .............. 714
Preparing and checking
before winter .................................... 429
Warning light .......................................666
Blind Spot Monitor (BSM) ................355
Blind Spot Monitor function...........361
Rear Crossing Traffic
Alert function ....................................365
Bluetooth®............................................... 513
Audio system ...................................... 490
Hands-free system
(for cellular phone)........................ 492
Boost gauge ............................................. 107
Bottle holders .........................................560
Brake
Brake Hold ........................................... 263
Fluid .......................................................... 736
Parking brake ......................................259
Warning light .......................................666
Brake assist.............................................. 422
Brake Hold .............................................. 263
Warning light....................................... 667
Break-in tips............................................ 228
Brightness control
Instrument panel light control ........ 98
BSM (Blind Spot Monitor) ............... 355
Blind Spot Monitor function .......... 361
Rear Crossing Traffic
Alert function.................................... 365
Card key ....................................................134
Care
Aluminum wheels..............................585
Exterior ................................................... 584
Interior.....................................................589
Seat belts ...............................................590
Self-restoring coat ............................ 584
Cargo hooks .......................................... 562
Cargo net hooks................................... 562
CD player ................................................ 466
Chains ....................................................... 430
Child restraint system............................ 54
Child seats definition .......................... 54
Child seats installation ...............62, 69
Installing a CRS to the
passenger seat ................................... 59
Installing CRS with ISOFIX
rigid anchors ........................................ 74
Installing CRS with seat belts ......... 66
Installing CRS with top strap ...........75
B
C

761Alphabetical index
RX350/RX200t_EE_OM48F32E
Child safety................................................. 54
Airbag precautions .............................. 43
Back door precautions .................... 148
Battery precautions ................. 610, 717
Child restraint system......................... 54
How your child should wear
the seat belt .......................................... 37
Installing child restraints .................... 54
Moon roof precautions .................... 217
Panoramic moon roof
precautions.......................................... 221
Power back door precautions....... 161
Power window lock switch............ 210
Power window precautions ........... 213
Rear door child-protectors ............143
Removed key battery
precautions........................................639
Seat belt precautions .......................... 39
Seat heater precautions .................549
Child-protectors .................................... 143
Cleaning .......................................584, 589
Aluminum wheels ............................. 585
Exterior................................................... 584
Interior .................................................... 589
Seat belts............................................... 590
Clock ................................................ 96, 568
Coat hooks .............................................. 577
Condenser .............................................. 607
Console box ........................................... 557
Consumption screen ................. 105, 128
Coolant
Capacity..................................................734
Checking ...............................................605
Preparing and checking
before winter.................................... 429
Cooling system ..................................... 605
Engine overheating ............................ 718
Cornering lights .................................... 266
Cruise control
Cruise control ....................................... 341
Dynamic radar cruise control
with full-speed range ................... 329
Cup holders ............................................558
Curtain shield airbags ............................. 41
Customizable features....................... 740
Customized mode ................................. 417
Daytime running light system ...........267
Defogger
Outside rear view mirrors ............ 542
Rear window........................................ 542
Windshield ........................................... 542
Differential............................................... 736
Dimensions ..............................................726
Display
Dynamic radar cruise control
with full-speed range ................... 329
LKA (Lane-Keeping Assist) .......... 319
Multi-information display................ 100
Warning messages .......................... 673
D