
3444-5. Using the driving support systems
RX350/RX200t_EE_OM48F32E
WARNING
■To avoid operating the cruise control by mistake
Switch the cruise control off using the “ON/OFF” button when not in use.
■Situations unsuitable for cruise control
Do not use cruise control in any of the following situations. Doing so may result in loss of control and could cause an accident resulting in death orserious injury.
●In heavy traffic
●On roads with sharp bends
●On winding roads
●On slippery roads, such as those covered with rain, ice or snow
●On steep hills Vehicle speed may exceed the set sp eed when driving down a steep hill.
●When your vehicle is towing a trailer or during emergency towing

3474-5. Using the driving support systems
4
Driving
RX350/RX200t_EE_OM48F32E
◆When the dynamic radar cruise control with full-speed range is operating
(if equipped)
The Stop & Start system is operational during a controlled stop by the
dynamic radar cruise control with full-speed range. (P. 332)
■Stopping the engine
While driving with the dynamic
radar cruise control with full-speed
range in vehicle-to-vehicle distance
control mode, the engine will stop
automatically if the vehicle comes to
a complete stop through a con-
trolled stop. (The engine will stop
automatically even though the brake
pedal is not depressed.)
The Stop & Start indicator will come on.
■Restarting the engine
When the preceding vehicle starts off, the engine will restart automatically.
The Stop & Start indicator will turn off.
■Stop & Start system operation during a controlled stop by the dynamic
radar cruise control with full-speed range
If the engine is restarted automatically by the Stop & Start system during a
controlled stop by the dynamic radar cruise control with full-speed range, the
controlled stop will continue. (Resuming follow-up cruising after a controlled
stop: P. 335)

3494-5. Using the driving support systems
4
Driving
RX350/RX200t_EE_OM48F32E
■Operating conditions
●The Stop & Start system is operational when all of the following conditions are met:
• The brake pedal is being depressed firmly. (Except when the vehicle comes to a controlled stop while driving with the dyna mic radar cruise control with full-speed
range in vehicle-to-vehicle distance control mode [if equipped])
• The shift lever is in D or M.
• is off.
• The driver's seat belt is fastened.
• The engine is adequately warmed up.
• The driver's door is closed.
• The accelerator pedal is not being depressed.
• The outside temperature is -5°C (23°F) or higher.
• The hood is closed.
●In the following situations the engine may not be stopped by the Stop & Start system.
This is not a malfunction of the Stop & Start system.
• The air conditioning system is being used when the ambient temperature is high or
low.
• The battery is not sufficiently charged, such as if the vehicle has been parked for a long time and the battery charge has decreased, the electric load is large, the bat-
tery temperature is excessively low or the battery has deteriorated, or is undergoing
a periodic recharge.
• The brake booster vacuum is low.
• The vehicle is stoppe d on a steep incline.
• The steering wheel is being operated.
• Due to traffic or other circumstances the vehicle is being stopped repeatedly.
• The vehicle is being driven in a high altitude area.
• Engine coolant temperature or transmissi on fluid temperature is extremely low or
high.
• The battery fluid temperature is extremely low or high.
• For a while after the battery terminals have been disconnected and reconnected.
• For a while after the battery replacement.
●In the following situations, the engine will re start automatically if the engine is stopped
by the Stop & Start system. (To enable stoppi ng of the engine by the Stop & Start sys-
tem, drive the vehicle.)
• The air conditioning system is turned on.
• is turned on.
• The steering wheel is operated.
• The shift lever is shifted to a position other than D or M.
• The driver's seat belt is unfastened.
• The driver's door is opened.
• The accelerator pedal is depressed.
• The Stop & Start cancel switch is pressed.
• The vehicle starts to roll on an incline.

3544-5. Using the driving support systems
RX350/RX200t_EE_OM48F32E
WARNING
■When the Stop & Start system is operating
●Depress the brake pedal and apply the parking brake when necessary while the engine is stopped by the Stop & Start system (while the Stop & Start indicator is on).
(Except when the brake hold system is operating or when the vehicle comes to a con- trolled stop while driving with the dynamic radar cruise control with full-speed range in vehicle-to-vehicle distan ce control mode [if equipped])
●Do not allow anyone to leave the vehicle while the engine is stopped by the Stop & Start system (while the Stop & Start indicator is on).An accident may occur due to the automatic engine start function.
●Ensure that the engine is not stopped by the Stop & Start system while the vehicle is ina poorly ventilated area. The engine may restart due to the automatic engine startfunction, causing exhaust gases to collect and enter the vehicle, possibly resulting in
death or a serious health hazard.
NOTICE
■To ensure the system operates correctly
If any of the following situations occur, the Stop & Start system may not operate cor- rectly. Have your vehicle inspected by any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
●While the driver's seat belt is fastened, the driver's and front passenger's seat belt reminder light flashes.
●Even though the driver's seat belt is not fastened, the driver's and front passenger'sseat belt reminder light does not illuminate.
●Even though the driver's door is closed, the open door warning is displayed on the
multi-information display or the interior lig ht is illuminated when door linked illumina- tion is enabled ( P. 553).
●Even though the driver's door is open, the open door warning is not displayed on the
multi-information display or the interior light does not illuminate when door linked illumination is enabled ( P. 553).

6778-2. Steps to take in an emergency
8
When trouble arises
RX350/RX200t_EE_OM48F32E
■When “Headlight System Malfunction Visit Your Dealer” is displayed
The following systems may be malfunctioning. Have the vehicle inspected by
any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional immediately.
●The LED headlight system
●The automatic headlight leveling system
●AHS (Adaptive High-beam System) (if equipped)
●Automatic High Beam (if equipped)
■If “Forward Camera System Unavailable” or “Forward Camera System
Unavailable Clean Windshield” is displayed (if equipped)
The following systems may be suspende d until the problem shown in the mes-
sage is resolved.
●PCS (Pre-Crash Safety system)
●LKA (Lane-Keeping Assist)
●Dynamic radar cruise control with full-speed range
●AHS (Adaptive High-beam System)
●Automatic High Beam
●RSA (Road Sign Assist)
■If “Oil Maintenance Required Soon” is shown
Indicates that the engine oil is scheduled to be changed. (The indicator will not
work properly unless the message has been reset.)
Check the engine oil, and change if necessary. After changing the engine oil,
the message should be reset. ( P. 604)
■If “Oil Maintenance Required” is shown
Indicates that the engine oil should be changed. (After the engine oil is
changed and the message has been reset.)
Check and change the engine oil, and oil filter by any authorized Lexus dealer
or repairer, or another duly qualified and equipped professional. After chang-
ing the engine oil, the message should be reset. ( P. 604)

6918-2. Steps to take in an emergency
8
When trouble arises
RX350/RX200t_EE_OM48F32E
WARNING
■When using the compact spare tire (vehicles with a compact spare tire)
●Remember that the compact spare tire provided is specifically designed for use with your vehicle. Do not use your compact spare tire on another vehicle.
●Do not use more than one compact spare tire simultaneously.
●Replace the compact spare tire with a standard tire as soon as possible.
●Avoid sudden acceleration, abrupt steerin g, sudden braking and shifting operations
that cause sudden engine braking.
■When the compact spare tire is attached (vehicles with a compact spare tire)
The vehicle speed may not be correctly detected, and the following systems may not
operate correctly:
Also, not only can the following system not be utilized fully, but it may even negatively affect the drive-train components:
• AWD system (AWD models)
■Speed limit when using the compact spare tire (vehicles with a compact spare tire)
Do not drive at speeds in excess of 80 km /h (50 mph) when a compact spare tire is installed on the vehicle.
The compact spare tire is not designed for driving at high speeds. Failure to observe this precaution may lead to an accid ent causing death or serious injury.
■After using the tools and jack
Before driving, make sure all the tools and jack are securely in place in their storage location to reduce the possibility of personal injury during a collision or sudden brak- ing.
• ABS & Brake assist
•VSC •TRC• Trailer Sway Control
•EPS • VDIM (if equipped)• Adaptive Variable Suspension System
(if equipped) • Cruise control (if equipped)• Dynamic radar cruise control with full-
speed range (if equipped) • PCS (Pre-Crash Safety system) (ifequipped)
• LKA (Lane-Keeping Assist) (if
equipped) • RSA (Road Sign Assist) (if equipped)• Automatic High Beam (if equipped)
• AHS (Adaptive High-beam System) (if equipped)• Tire pressure warning system
• Lexus parking assist-sensor (if equipped)• Intelligent Clearance Sonar (ICS) (if
equipped) • Lexus parking assist monitor (ifequipped)
• Panoramic view monitor (if equipped) • BSM (Blind Spot Monitor) (ifequipped)
• Navigation system (if equipped)

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

762Alphabetical index
RX350/RX200t_EE_OM48F32E
Do-it-yourself maintenance .............595
Doors
Automatic door locking and
unlocking system..............................143
Back door................................................146
Door lock................................................. 142
Outside rear view mirrors.............206
Power back door.................................. 151
Rear door child-protectors ............143
Side doors .............................................. 140
Side windows........................................ 210
Double locking system .......................... 82
Drive information................................... 105
Drive-start control.....................227, 255
Driver’s seat belt reminder light ..... 669
Driver’s seat position memory ......... 195
Driving
Break-in tips ......................................... 228
Correct posture .................................... 34
Driving mode select switch ............ 417
Procedures ........................................... 226
Winter drive tips................................. 429
Driving position memory .................... 195
Memory recall function ................... 198
Power easy access system ............ 195
Dynamic radar cruise control
with full-speed range ....................... 329
Dynamic Torque Control AWD
system .................................................... 423
Eco drive mode ....................................... 417
Eco Driving Indicator............................120
Electric Power Steering (EPS) ....... 423
Warning light....................................... 667
Electronic key ..........................................134
Battery-saving function .................... 169
If the electronic key does
not operate properly...................... 710
Replacing the battery ...................... 638
Electronic sunshade ..............................218
Jam protection function ................... 219
Operation ............................................... 218
Emergency brake signal.................... 423
Emergency flashers ............................. 656
Emergency tire puncture
repair kit ................................................ 693
Emergency, in case of
If a warning buzzer sounds .......... 666
If a warning light turns on .............. 666
If a warning message is
displayed ............................................ 673
If the battery is discharged ............. 714
If the electronic key does
not operate properly...................... 710
If the engine will not start ............... 708
If you have a flat tire.............. 679, 693
If you lose your keys ............... 136, 138
If you think something is
wrong................................................... 664
If your vehicle becomes stuck ..... 722
If your vehicle has to be
stopped in an emergency ......... 657
If your vehicle needs
to be towed.......................................658
If your vehicle overheats.................. 718
E