2019 LEXUS RX350 lane assist

386 4-6. Driving tips
RX350/RX350L_U To enable the windshield wi pers to be lifted when he avy snow or icy conditions
are expected, change the rest position of the windshield wipers from the
retracted position below the hood to th e service position using the wiper lever.
(  P. 265) ■
Tire chain installation
Observe the following precautions when installing and removing chains: ●
Install and remove tire chains in a safe location. ●
Install tire chains on the front tires only. Do not install tire chains on the rear tires. ●
Install tire chains on front tires as tightly as possible. Retighten chains after driving
1/4 - 1/2 mile (0.5 - 1.0 km). ●
Install tire chains following the instru ctions provided with the tire chains. Windshield wipers
WARNING ■
Driving with snow tires
Observe the following precautions to reduce the risk of accidents.
Failure to do so may result in a loss of vehi cle control and cause death or serious injury.●
Use tires of the specified size. ●
Maintain the recommended level of air pressure.●
Do not drive in excess of 75 mph (120 km/h ), regardless of the type of snow tires
being used. ●
Use snow tires on all, not just some wheels. ■
Driving with tire chains
Observe the following precautions to reduce the risk of accidents.
Failure to do so may result in the vehicle being unable to be dr iven safely, and may
cause death or serious injury. ●
Do not drive in excess of the speed limit specified for the tire chains being used, or
30 mph (50 km/h), whichever is lower. ●
Avoid driving on bumpy road surfaces or over potholes.●
Avoid sudden acceleration, abrupt steering, sudden braking and shifting operations
that cause sudden engine braking. ●
Slow down sufficiently before entering a cu rve to ensure that vehicle control is main-
tained. ●
Do not use the LKA (Lane-Keeping Assist) system.

6558-2. Steps to take in an emergency
8
When trouble arises
RX350/RX350L_U (Flashes)
(U.S.A.)
(Flashes)
(Canada)
Parking brake indicator
It is possible that the parking br ake is not fully engaged or released
 Operate the parking brake switch once again.
This light comes on when the parking brake is not released. If the
light turns off after the parking brak e is fully released, the system is
operating normally. (Flashes)
Brake hold operated indicator
Indicates a malfunction in the brake hold system
 Have the vehicle inspected by your Lexus dealer immediately.
Electric power steering system warning light (warning buzzer)
Indicates a malfunction in the EPS (Electric Power Steering) sys-
tem
 Have the vehicle inspected by your Lexus dealer immediately.
LKA indicator
Indicates a malfunction in the LKA (Lane-Keeping Assist)
 When “Lane Keeping Assist Unavailable” is displayed on the
multi-information display, turn the LKA system off, drive the
vehicle for a short time, and then turn the LKA system back on.
(  P. 295)
When a message other than above is displayed, follow the
instructions displayed in the message.
Slip indicator
When the warning lig ht is illuminated:
Indicates a malfunction in:
• The VSC system;
• The TRAC system;
• The Trailer Sway Control; or
• The hill-start assist control system
 Have the vehicle inspected by your Lexus dealer immediately.
When the warning light flashes:
Indicates that the VSC, TRAC or Trailer Sway Control system is
operatingWarning light Warning light/Details/Actions

664 8-2. Steps to take in an emergency
RX350/RX350L_U ■
If “Forward Camera System Unavailable” or “Forward Camera System
Unavailable Clean Windshield” is displayed
The following systems may be suspended until the problem shown in the mes-
sage is resolved. (  P. 290)●
PCS (Pre-Collision System) ●
LKA (Lane-Keeping Assist) ●
Dynamic radar cruise control with full-speed range ●
Automatic High Beam■
If “Oil Maintenance Required Soon” is shown
Indicates that the engine oil is scheduled to be changed.
Check the engine oil, and change if necessary. After changing the engine oil,
the message should be reset. (  P. 597)■
If “Oil Maintenance Required” is shown
Indicates that the engine oil should be changed.
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. 597)■
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. Plea se reset the message after the main-
tenance is performed. (  P. 585)
* : Refer to the separate “Scheduled Mainte nance” or “Owner’s Manual Supplement”
for the maintenance interval applicable to your vehicle.

680 8-2. Steps to take in an emergency
RX350/RX350L_U WARNING ■
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 comp act spare tire on another vehicle.●
Do not use more than one comp act spare tire simultaneously.●
Replace the compact spare ti re with a standard tire as soon as possible.●
Avoid sudden acceleration, abrupt steering, sudden braking 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 possibilit y 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)
• Dynamic radar cruise control with full-
speed range
• PCS (Pre-Collision System)
• LKA (Lane-keeping Assist)
• Automatic High Beam • AFS (Adaptive Front-lighting System)
(if equipped)
• Tire pressure warning system
• Intuitive parking assist (if equipped)
• Intelligent Clearance Sonar (ICS) (if
equipped)
• Lexus parking assist monitor (if
equipped)
• Panoramic view monitor (if equipped)
• BSM (Blind Spot Monitor) (if
equipped)
• Navigation system (if equipped)

761Alphabetical index
RX350/RX350L_U Daytime running light system .......... 254
Defogger
Outside rear view mirrors .............. 513
Rear window ......................................... 513
Windshield ............................................. 513
Differential ............................................... 703
Dimensions ............................................. 698
Dinghy towing........................................ 230
Display
Dynamic radar cruise control
with full-speed range ................... 300
LKA (Lane-Keeping Assist) .........296
Multi-information display ..................90
Warning messages............................ 661
Do-it-yourself maintenance .............590
Doors
Automatic door locking and
unlocking system .............................. 127
Door lock ................................................ 126
Outside rear view mirrors .............. 184
Power back door ................................ 130
Rear door child-p rotectors ............ 127
Side doors ...............................................124
Side windows ........................................ 187 Drive information .....................................94
Drive-start control ........ 203, 238, 243
Driver’s seat belt reminder light .... 656
Driver’s seat position memory.......... 172
Driving
Break-in tips ......................................... 204
Correct posture .................................... 30
Driving mode select switch .......... 373
Procedures ........................................... 202
Winter drive tips ................................384
Driving position memory .................... 172
Memory recall function .................... 175
Power easy access system ............. 172
Dynamic radar cruise control
with full-speed range....................... 300
Dynamic Torque Control AWD
system .....................................................379D

766 Alphabetical index
RX350/RX350L_U Lane-Keeping Assist (LKA)...............291
Language (multi-information
display).................................................... 102
LATCH anchors .......................................67
Lever
Auxiliary catch lever .........................592
Hood lock release lever .................592
Shift lever ................................... 236, 240
Turn signal lever .................................246
Wiper lever .................................261, 267
Lexus Climate Concierge ................ 502
Lexus Display Audio controller...... 396
Lexus Enform
* Lexus Enform Remote
* .................... 573
LEXUS Enform Safety
Connect ................................................ 568
LEXUS Enform Service
Connect
* ............................................. 574
Lexus parking assist monitor ........... 357
Display .................................................... 358
Precautions ...........................................364
Lexus Safety System+..........................274
Automatic High Beam ....................256
Dynamic radar cruise control
with full-speed range ................... 300
LKA (Lane-Keeping Assist) .......... 291
PCS (Pre-Collision System) ......... 281 License plate lights
Light switch........................................... 252
Replacing light bulbs .......................630
Light
Automatic High Beam.................... 256
Cornering lights ................................. 253
Fog light switch ................................... 260
Headlight switch ................................ 252
Illuminated entry system................. 527
Interior light list .................................... 524
Interior lights ........................................ 525
Luggage compartment light ..........136
Personal lights ..................................... 526
Replacing light bulbs .......................630
Turn signal lever ................................. 246
Vanity lights .......................................... 543
Wattage ................................................. 705
Welcome lighting.............................. 255
Light bulbs
Replacing ...............................................630
Wattage ................................................. 705
LKA (Lane-Keeping Assist) .............. 291
Lock steering column......................... 233
Luggage cover .......................................537L

767Alphabetical index
RX350/RX350L_U Maintenance
Do-it-yourself maintenance......... 590
General maintenance .................... 586
Maintenance data ............................. 698
Maintenance requirements.......... 584
Malfunction indicator lamp .............. 654
Memory recall function .......................175
Meter
Head-up display..................................108
Indicators.................................................. 80
Instrument panel light control ........ 88
Meters.........................................................86
Multi-information display ..................90
Settings ....................................................... 97
Warning lights .................................... 654
Warning messages............................ 661
Microphone ............................................ 456
Mirrors
Inside rear view mirror ..................... 182
Outside rear view mirror
defoggers ............................................ 513
Outside rear view mirrors .............. 184
Vanity mirrors ......................................543
Moon roof
Door lock linked moon roof
operation ............................................. 189
Jam protection function ................... 192
Operation ................................................. 191 MP3 disc .................................................. 427
Multi-information display
AWD Control display........................ 95
Clock .......................................................... 86
Drive information.................................. 94
Dynamic radar cruise control
with full-speed range .................. 300
G-force display ..................................... 96
Language.................................................102
LKA (Lane-Keeping Assist)......... 296
Outside temperature.......................... 86
PCS
(Pre-Collision System) .................281
Settings .......................................................97
Suggestion function........................... 105
Sway warning display......................... 95
Warning messages ............................661
Navigation system
* Noise from under vehicle ........................8M
N
* : Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL”.

772 Alphabetical index
RX350/RX350L_U Switches
All-wheel drive lock switch ........... 377
Audio remote control
switches .............................................. 400
Automatic High Beam switch .....256
Brake hold switch ............................. 250
Cruise control switch...................... 300
Door lock switch ................................. 126
Driving mode select switch .......... 373
Driving position memory
switches ................................................. 172
Electronic sunshade switch ........... 195
Emergency flashers switch ...........644
Engine switch .........................................231
Fog light switch .................................. 260
Garage door opener
switches ...............................................557
Heated steering wheel switch ..... 522
HUD (Head-up display)
switches ................................................108
Ignition switch ........................................231
Light switch ........................................... 252
LKA (Lane-Keeping Assist)
switch....................................................295
Meter control switches ...................... 92
Moon roof switches............................. 191
“ODO/TRIP” switch ........................... 93 Outside rear view mirror
switches ................................................184
Paddle shift switches.............. 241, 242
Panoramic moon roof
switches ................................................195
Parking brake switch ........................247
Power back door opener
and closer switch .................... 131, 133
Power window switch .......................187
Rear window and outside
rear view mirror
defoggers switch..............................513
Rear window wiper and
washer switch .................................. 267
Seat heater switches ............ 522, 523
Seat ventilator switches .................. 523
“SOS” button ...................................... 568
Talk switch.................................465, 487
Telephone switches.......................... 465
Vehicle-to-vehicle
distance button............................... 300
VSC OFF switch .............................. 380
Window lock switch ..........................187
Windshield wiper and
washer switch .................................... 261