cruise control LEXUS RX350 2016 Owner's Guide

322 4-5. Using the driving support systems
RX350_U_OM48E90U When constant speed control mode is sele cted, your vehicle will maintain a set
speed without controlling the vehicle-to-vehicle distance. Select this mode only
when vehicle-to-vehicle distance contro l mode does not function correctly due
to a dirty radar sensor, etc.
With the cruise control off, press and
hold the “ON/OFF” button for 1.5
seconds or more. Immediately after the “ON/OFF” but-
ton is pressed, the radar cruise control
indicator will come on. Afterwards, it
switches to the cruise control indicator.
Switching to constant speed control
mode is only possible when operating
the lever with the cruise control off.
Accelerate or decelerate, with
accelerator pedal operation, to the
desired vehicle speed (above
approximately 30 mph [50 km/h])
and push the lever down to set the
speed. Cruise control “SET” indicator will come
on.
The vehicle speed at the moment the
lever is released be comes the set speed.
Adjusting the speed setting:  P. 3 1 9
Canceling and resuming the speed setting:  P. 3 2 0Selecting constant speed control mode 1
2

3234-5. Using the driving support systems
4
Driving
RX350_U_OM48E90U ■
Dynamic radar cruise control can be set when ●
The shift lever is in the D or range 4 or higher of S has been selected.
(vehicles without padd le shift switches)●
The shift lever is in D.
(vehicles with paddle shift switches) ●
Range 4 or higher of D has been se lected by using the paddle shift.
(vehicles with paddle shift switches) ●
Vehicle speed is above approximately 30 mph (50 km/h). ■
Accelerating after setting the vehicle speed
The vehicle can accelerate by operating the accelerator pedal. After accelerating, the
set speed resumes. However, during vehicle- to-vehicle distance control mode, the vehi-
cle speed may decrease below the set speed in order to maintain the distance to the pre-
ceding vehicle. ■
Automatic cancelation of vehicle- to-vehicle distance control mode
Vehicle-to-vehicle distance control mode is automatically canceled in the following situ-
ations. ●
Actual vehicle speed falls below approximately 25 mph (40 km/h). ●
VSC is activated. ●
TRAC is activated for a period of time. ●
When the VSC or TRAC system is turned off by pressing the VSC OFF switch. ●
The sensor cannot detect correctly because it is covered in some way. ●
Pre-collision braking is activated.
If vehicle-to-vehicle distance control mode is automatically canceled for any other rea-
son, there may be a malfunction in the system. Contact your Lexus dealer. ■
Automatic cancelation of constant speed control mode
Constant speed control mode is automatica lly canceled in the following situations:●
Actual vehicle speed is more than approximately 10 mph (16 km/h) below the set vehi-
cle speed. ●
Actual vehicle speed falls below approximately 25 mph (40 km/h). ●
VSC is activated. ●
TRAC is activated for a period of time. ●
When the VSC or TRAC system is turned off by pressing the VSC OFF switch. ●
Pre-collision braking is activated.
If constant speed control mode is automatica lly canceled for any other reason, there may
be a malfunction in the system. Contact your Lexus dealer. ■
Warning messages and buzzers for dynamic radar cruise control
Warning messages and buzzers are used to indicate a system malfunction or to inform
the driver of the need for caution while driving. If a warning message is shown on the
multi-information display, read the message and follow the instructions.

326 4-5. Using the driving support systems
RX350_U_OM48E90U Use the cruise control to maintain a set speed without operating the accelerator
pedal.
Set speed
Indicators
Cruise control switch
Press the “ON/OFF” button to acti-
vate the cruise control. Cruise control indicator will be dis-
played on the multi-information display.
Press the button again to deactivate the
cruise control.
Accelerate or decelerate, with
accelerator pedal operation, to the
desired vehicle speed (above
approximately 25 mph [40 km/h])
and push the lever down to set the
speed. Cruise control “SET” indicator and set
speed will be displayed on the multi-
information display.
The vehicle speed at the moment the lever is released becomes the set speed.Cruise control 
 : If equippedSummary of functions 1
2
3
Setting the vehicle speed 1
2

328 4-5. Using the driving support systems
RX350_U_OM48E90U ■
Cruise control can be set when ●
The shift lever is in the D or range 4 or higher of S has been selected.
(vehicles without padd le shift switches)●
The shift lever is in D.
(vehicles with paddle shift switches) ●
Range 4 or higher of D has been se lected by using the paddle shift.
(vehicles with paddle shift switches) ●
Vehicle speed is above approximately 25 mph (40 km/h). ■
Accelerating after setting the vehicle speed ●
The vehicle can be accelerated by operating accelerator pedal. After accelerating, the
set speed resumes. ●
Even without canceling the cruise control, the set speed can be increased by first accel-
erating the vehicle to the desired speed and then pushing the lever down to set the new
speed. ■
Automatic cancelation of cruise control
Cruise control is automatically canceled in any of the fo llowing situations.●
Actual vehicle speed falls more than approximately 10 mph (16 km/h) below the set
speed. ●
Actual vehicle speed is below approximately 25 mph (40 km/h). ●
VSC is activated. ●
TRAC is activated for a period of time. ●
When the VSC or TRAC system is turned off by pressing the VSC OFF switch. ■
If “Cruise Control Malfunction Visit Your Dealer” is displayed on the multi-information
display
Press the “ON/OFF” button once to deactivate the system, and then press the button
again to reactivate the system.
If the cruise control speed cannot be set or if the cruise control cancels immediately after
being activated, there may be a malfunction in the cruise control system. Have the vehi-
cle inspected by your Lexus dealer.

3294-5. Using the driving support systems
4
Driving
RX350_U_OM48E90U WA R N I N G ■
To avoid operating the cruise control by mistake
Switch the cruise control off using th e “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 or
serious injury. ●
In heavy traffic ●
On roads with sharp bends ●
On winding roads ●
On slippery roads, such as thos e covered with rain, ice or snow●
On steep hills
Vehicle speed may exceed the set speed when driving down a steep hill. ●
When your vehicle is towing a trailer or during emergency towing

644 8-2. Steps to take in an emergency
RX350_U_OM48E90U ■
If “Forward Camera System Unavailable” or “Forward Camera System
Unavailable Clean Windshield ” is displayed (if equipped)
The following systems may be suspended until the problem shown in the mes-
sage is resolved. ●
PCS (Pre-Collision System) ●
LKA (Lane-Keeping Assist) ●
LDA (Lane Departure Alert with steering control) ●
Dynamic radar cruise control with full-speed range ●
Dynamic radar cruise control ●
Automatic High Beam■
If “Oil Maintenance Required Soon” is shown
Indicates that the engine oil is schedule d to be changed. (The indicator will not
work properly unless the message has been reset.)
Check the engine oil, and change if ne cessary. After changing the engine oil,
the message should be reset. (  P. 5 7 7 )■
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 o il filter by your Lexus dealer. After
changing the engine oil, the message should be reset. (  P. 5 7 7 )■
If “Maintenance Required Soon” is displayed (U.S.A. only)
Indicates that all maintenance according to the driven distance on the mainte-
nance schedule
* should be performed soon.
Comes on approximately 4500 miles (7200 km) after the message has been
reset.
If necessary, perform maintenance. Pl ease reset the message after the main-
tenance is performed. (  P. 565)
* : Refer to the separate “Scheduled Mainte nance” or “Owner’s Manual Supplement”
for the maintenance interval applicable to your vehicle.

656 8-2. Steps to take in an emergency
RX350_U_OM48E90U WA R N I N G ■
When using the compact spare tire ●
Remember that the compact spare tire provid ed 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, ab rupt steering, sudden bra king and shifting operations
that cause sudden engine braking. ■
When the compact spare tire is attached
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
Do not drive at speeds in excess of 50 mph (80 km/h) 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
•TRAC
• Trailer Sway Control
•EPS
• VDIM (if equipped)
• Adaptive Variable Suspension System
(if equipped)
• Cruise control (if equipped)
• Dynamic radar cruise control (if
equipped)
• Dynamic radar cruise control with full-
speed range (if equipped)
• PCS (Pre-Collision System) (if
equipped) • LDA (Lane Departure Alert with
steering control) (if equipped)
• LKA (Lane-keeping Assist) (if
equipped)
• Automatic High Beam (if equipped)
• AFS (Adaptive Front-lighting System)
(if equipped)
• Tire pressure warning system
• Intuitive parking assist (if equipped)
• Lexus parking assist monitor (if
equipped)
• Panoramic view monitor (if equipped)
• BSM (Blind Spot Monitor) (if
equipped)
• Navigation system (if equipped)

735Alphabetical index
RX350_U_OM48E90U Coolant
Capacity ................................................ 678
Checking............................................... 578
Preparing and checking
before winter ................................... 380
Cooling system ..................................... 578
Engine overheating.......................... 668
Cornering lights .................................... 242
Cruise control
Cruise control......................................326
Dynamic radar cruise control....... 314
Dynamic radar cruise control
with full-speed range ................... 302
Cup holders ..............................................514
Curtain shield airbags ........................... 37
Customizable features ....................... 699
Customized mode ............................... 369
Daytime running light system .......... 243
Defogger
Outside rear view mirrors ............ 500
Rear window .......................................500
Windshield ........................................... 500
Differential ............................................... 679
Dimension ............................................... 674
Dinghy towing..........................................219
Display
Dynamic radar cruise control....... 314
Dynamic radar cruise control
with full-speed range ................... 302
LDA (Lane Departure Alert
with steering control) ................... 297
LKA (Lane-Keeping Assist) ........ 288
Multi-information display ..................89
Warning messages............................ 641 Do-it-yourself maintenance............. 570
Doors
Automatic door locking and
unlocking system.............................. 127
Door lock................................................. 126
Outside rear view mirrors .............. 173
Power back door ............................... 130
Rear door child-p rotectors ............ 127
Side doors ............................................... 124
Side windows ........................................ 177
Drive information .....................................93
Drive-start control .......... 193, 227, 232
Driver’s seat belt reminder light .... 636
Driver’s seat position memory.......... 162
Driving
Break-in tips ...........................................194
Correct posture .................................... 28
Driving mode select switch .......... 369
Procedures ............................................. 192
Winter drive tips ............................... 380
Driving position memory .................... 162
Memory recall function ....................165
Dynamic radar cruise control ........... 314
Dynamic radar cruise control
with full-speed range....................... 302
Dynamic Torque Control AWD
system .....................................................375D

739Alphabetical index
RX350_U_OM48E90U Keyless entry
Smart access system with
push-button start ............................. 146
Wireless remote control .......120, 130
Keys............................................................. 120
Battery-saving function .................... 148
Electronic key ....................................... 120
Engine switch .......................................220
If the electronic key does not
operate properly.............................. 661
Key number plate ............................... 120
Keyless entry ......................................... 120
Mechanical key ...................................... 121
Replacing the battery ...................... 603
Warning buzzer .................................. 125
Wireless remote control ................. 120
Knee airbags ............................................. 36
Lane Departure Alert
with steering control (LDA).......... 293
Lane-Keeping Assist (LKA)............. 283
Language (multi-information
display)...................................................... 101
LATCH anchors ...................................... 69
LDA (Lane Departure Alert
with steering control) ...................... 293
Lever
Auxiliary catch lever ......................... 572
Hood lock release lever ................. 572
Shift lever .................................... 225, 229
Turn signal lever ................................. 234
Wiper lever .............................. 250, 256
Lexus Climate Concierge ................ 494 Lexus Display Audio controller ..... 392
Lexus Enform
* Lexus Enform Remote
* .................... 552
LEXUS Enform Safety
Connect.................................................547
LEXUS Enform Service
Connect
* ............................................. 554
Lexus parking assist monitor ........... 339
Display..................................................... 340
Precautions ........................................... 346
Lexus Safety System+ .........................262
Automatic High Beam.................... 245
Dynamic radar cruise control ....... 314
Dynamic radar cruise control
with full-speed range ................... 302
LDA (Lane Departure Alert
with steering control) ................... 293
LKA (Lane-Keeping Assist)......... 283
PCS (Pre-Collision System) ....... 270
License plate lights
Light switch............................................. 241
Replacing light bulbs ........................ 610
Light
Automatic High Beam.................... 245
Cornering lights ................................. 242
Fog light switch ................................... 249
Headlight switch .................................. 241
Illuminated entry system.................... 511
Interior light list ................................... 508
Interior lights ....................................... 509
Luggage compartment light ..........136
Personal lights ...................................... 510
Replacing light bulbs ........................ 610
Turn signal lever ................................. 234
Vanity lights .......................................... 523K
L
* : Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL”.

740 Alphabetical index
RX350_U_OM48E90U Wattage ................................................. 682
Welcome lighting .............................. 243
Light bulbs
Replacing ................................................ 610
Wattage ................................................. 682
LKA (Lane-Keeping Assist)............. 283
Lock steering column ......................... 222
Luggage cover ....................................... 519
Maintenance
Do-it-yourself maintenance......... 570
General maintenance .................... 566
Maintenance data .............................. 674
Maintenance requirements.......... 564
Malfunction indicator lamp .............. 634
Memory recall function .......................165
Meter
Head-up display.................................. 107
Indicators.................................................. 80
Instrument panel light control ......... 87
Meters........................................................ 85
Multi-information display ..................89
Settings .......................................................96
Warning lights .....................................634
Warning messages............................ 641
Microphone ..............................................451
Mirrors
Inside rear view mirror ....................... 171
Outside rear view mirror
defoggers .......................................... 500
Outside rear view mirrors ...............173
Vanity mirrors ......................................523 Moon roof
Door lock linked moon roof
operation .............................................. 179
Jam protection function....................182
Operation................................................. 181
MP3 disc ..................................................422
Multi-information display
AWD Control display........................ 94
Clock .......................................................... 85
Drive information .................................. 93
Dynamic radar cruise control ....... 314
Dynamic radar cruise control
with full-speed range ................... 302
G-force display ..................................... 95
Language.................................................. 101
LDA (Lane Departure Alert
with steering control) ................... 297
LKA (Lane-Keeping Assist).........288
Outside temperature.......................... 85
PCS
(Pre-Crash Safety system).......... 271
Settings ...................................................... 96
Suggestion function............................104
Sway warning display ......................... 94
Warning messages ............................641
Navigation system
* Noise from under vehicle ........................8M
N