2019 LEXUS UX250H cruise

2244-5. Using the driving support systems
below approximately 20 mph [30 km/h],
the set speed will be set to approximately
20 mph [30 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 vehi-
cle-to-vehicle distance control mode, the
vehicle speed may decrease below the set
speed in order to maintain the distance to
the preceding vehicle.
■When the vehicle stops while follow-up
cruising
●Pressing the “+RES” switch while the
vehicle ahead stops w ill resume follow-up
cruising if the vehicle ahead starts off
within approximately 3 seconds after the
switch is pressed.
●If the vehicle ahead starts off within 3 sec-
onds after your vehicle stops, follow-up
cruising will be resumed.
■Automatic cancelation of vehicle-to-
vehicle distance control mode
Vehicle-to-vehicle dist ance control mode is
automatically canceled in the following situ-
ations.
●VSC is activated.
●TRAC is activated for a period of time.
●When the VSC or TRAC system is
turned off.
●The sensor cannot detect correctly
because it is covered in some way.
●Pre-collision braking is activated.
●The parking brake is operated.
●The vehicle is stopped by system control
on a steep incline.
●The following are detected when the
vehicle has been stopped by system con-
trol:
• The driver is not wearing a seat belt.
• The driver’s door is opened.
• The vehicle has been stopped for about 3 minutes
If vehicle-to-vehicle distance control mode
is automatically canceled for any reasons
other than the above, there may be a mal- function in the system. Contact your Lexus
dealer.
■Automatic cancelation of constant
speed control mode
Constant speed control mode is automati-
cally canceled in the following situations:
●Actual vehicle speed is more than
approximately 10 mph (16 km/h) below
the set vehicle speed.
●Actual vehicle speed falls below approxi-
mately 20 mph (30 km/h).
●VSC is activated.
●TRAC is activated for a period of time.
●When the VSC or TRAC system is
turned off.
●Pre-collision braking is activated.
If constant speed control mode is automati-
cally canceled for any reasons other than
the above, there may be a malfunction in the
system. Contact your Lexus dealer.
■Brake operation
A brake operation sound may be heard and
the brake pedal response may change, but
these are not malfunctions.
■Warning messages and buzzers for
dynamic radar cruise control with full-
speed range
Warning messages and buzzers are used to
indicate a system malfunction or to inform
the driver of the need for caution while driv-
ing. If a warning messa ge is shown on the
multi-information displa y, read the message
and follow the instructions. ( P.196, 395)
■When the sensor may not be correctly
detecting the vehicle ahead
In the case of the fo llowing and depending
on the conditions, operate the brake pedal
when deceleration of the system is insuffi-
cient or operate the accelerator pedal
when acceleration is required.
As the sensor may not be able to correctly
detect these types of vehicles, the approach
warning ( P.222) may not be activated.
●Vehicles that cut in suddenly
●Vehicles traveling at low speeds
●Vehicles that are not moving in the same

3977-2. Steps to take in an emergency
7
When trouble arises
not be charged when the shift lever is in N,
shift the shift lever to P when the vehicle is
stopped.
■If “Traction Battery Needs to be Pro-
tected Shift into P to Restart” is dis-
played
This message is displayed when the hybrid
battery (traction battery) charge has
become extremely low because the shift
lever has been left in N for a certain amount
of time.
When operating the vehicle, shift to P and
restart the hybrid system.
■If “Vehicle May Roll Shift to P” or “Shift
to P before exiting vehicle” is shown
Message is displayed when the driver’s
door is opened with out turning the power
switch off with the shift lever in any position
other than P.
Shift the shift lever to P.
■If “Shift is in N Release accelerator
before shifting” is displayed
The accelerator pedal has been depressed
when the shift lever is in N.
Release the accelerator pedal and shift the
shift lever to D, S or R.
■If “Press brake when vehicle is stopped
Hybrid system may overheat” is dis-
played
The message may be displayed when the
accelerator pedal is depressed to hold the
vehicle while the vehicle is stopped on an
incline, etc. The hybrid system may over-
heat. Release the accelerator pedal and
depress the brake pedal.
■If “Auto Power Off to Conserve Battery”
is displayed
Power was turned off due to the automatic
power off function. Next time when starting
the hybrid system, operate the hybrid sys-
tem for approximately 5 minutes to
recharge the 12-volt battery.
■If “High Power Cons umption Power to
Climate Temporarily Limited” is dis-
played
Turn off unnecessary electronic equipment
to reduce power consumption. Please wait until the power supply returns to
normal.
■If “Headlight System Malfunction Visit
Your Dealer” is displayed
The following systems may be malfunction-
ing. Have the vehicle inspected by your
Lexus dealer immediately.
●The LED headlight system
●AFS (Adaptive Front-lighting System) (if
equipped)
●The automatic headlight leveling system
(if equipped)
●Automatic High Beam
■If “Radar Cruise Control Unavailable” is
shown
The dynamic radar cruise control with full-
speed range system cannot be used tempo-
rarily. Use the system when it becomes
available again.
■If “Front Camera Unav ailable” or “Front
Camera Unavailable See Owner’s
Manual” is displayed
The following systems may be suspended
until the problem shown in the message is
resolved. ( P.196, 392)
●PCS (Pre-Collision System)
●LTA (Lane Tracing Assist)
●Automatic High Beam
●RSA (Road Sign Assist) (if equipped)
●Dynamic radar cruise control with full-
speed range
■If “AWD System Overheated Switching
to 2WD Mode” or “AWD System Over-
heated 2WD Mode Engaged” is shown
on the multi-information display (AWD
models)
This message may be displayed when high
load driving is continued. ( P.259)
■If “Maintenance Required Soon” is dis-
played
Indicates that all maintenance according to
the driven distance on the maintenance
schedule
* should be performed soon.
Comes on approximately 4500 miles
(7200 km) after the message has been

3987-2. Steps to take in an emergency
reset. If necessary, perform maintenance.
Please reset the message after the mainte-
nance is performed. (P.328)
*: Refer to the separa te “Scheduled Main-
tenance” or “Owner’s Manual Supple-
ment” for the maintenance interval
applicable to your vehicle.
■If “Maintenance Required Visit Your
Dealer” is displayed
Indicates that all maintenance is required to
correspond to the driven distance on the
maintenance schedule
*.
Comes on approximately 5000 miles
(8000 km) after the message has been
reset. (The indicator will not work properly
unless the message ha s been reset.) Per-
form the necessary maintenance. Please
reset the message after the maintenance is
performed. ( P.328)
*: Refer to the separa te “Scheduled Main-
tenance” or “Owner’s Manual Supple-
ment” for the maintenance interval
applicable to your vehicle.
■If “Oil Maintenance Required Soon” is
displayed
Indicates that the engine oil should be
scheduled to be changed.
Check the engine oil and change it if neces-
sary. After changing the engine oil, make
sure to reset the message. ( P.339)
■If “Oil Maintenance Required” is dis-
played
Indicates that the engine oil should be
changed.
Check and change the en gine oil, and oil fil-
ter by your Lexus deal er. After changing the
engine oil, make sure to reset the message.
(  P.339)
■If a message that in dicates the need for
visiting your Lexus dealer is displayed
The system or part shown on the multi-
information display is malfunctioning. Have
the vehicle inspected by your Lexus dealer
immediately.
■If a message that indicates the need for
referring to Owner’ s Manual is dis-
played
●If any of the following messages are
shown on the multi-information display,
follow the instructions.
• “Engine Coolant Temp High” ( P.410)
• “Front Camera Unavailable” ( P.196)
• “Radar Cruise Control Unavailable” ( P.196)
●If any of the following messages are
shown on the multi-info rmation display, it
may indicate a malf unction. Have the
vehicle inspected by your Lexus dealer
immediately.
• “Access System with Elec. Key Malfunc-
tion”
• “Hybrid system malfunction”
•“Check Engine”
• “Hybrid battery system malfunction”
• “Accelerator system malfunction”
●If any of the following messages are
shown on the multi-info rmation display, it
may indicate a malfun ction. Immediately
stop the vehicle and contact your Lexus
dealer.
• “Braking Power Low”
• “Charging System Malfunction”
• “Oil Pressure Low”
●If “Low Auxiliary Battery See Owner’s
Manual” is shown
• When the display goes off after several
seconds
*:
Maintain the hybrid system operation for
more than 15 minutes and charge the 12-
volt battery.
• When the display does not go off:
Start up the hybrid system using the proce-
dures for “If the 12-volt battery is dis-
charged” ( P.405)
*: Displays for about 6 seconds
●If “Maintenance required for Traction bat-
tery cooling parts See owner’s manual” is
shown, the filter may be clogged, the air
intake vent may be blocked, or there may
be a gap in the duct. Therefore, perform
the following correction procedure.
• If the air intake vent and filter of the hybrid battery (traction battery) are dirty, per-

464Alphabetical Index
C
Card key .......................................................... 104
CareAluminum wheels ...................................... 322
Exterior ........................................................... 322
Interior ............................................................. 325
Seat belts........................................................ 325
Cargo capacity............................................... 157
Cargo hooks ................................................. 296
Center Display ............................................. 270
Chains .............................................................. 264
Child-protectors...............................................111
Child restraint system................................... 44 Fixed with a LATCH system .................. 52
Fixed with a seat belt................................... 48
Front passenger occupant classification system ............................................................. 39
Points to remember .................................... 44
Riding with children ..................................... 44
Types of child restraint system installation method ........................................................... 46
Using an anchor bracket .......................... 54
Child safety ....................................................... 44 12-volt battery precautions ...... 343, 409
Airbag precautions...................................... 36
Back door precautions...............................112
Child restraint system................................. 44
Heated steering wheel and seat heater precautions................................................286
How your child should wear the seat belt ............................................................................ 28
Moon roof precautions ............................149
Power window lock switch.....................146
Power window precautions ...................146
Rear door child-protectors ....................... 111
Removed key battery precautions ...369
Seat belt extender precautions ............. 28
Seat belt precautions .................................. 52
Cleaning...............................................322, 325 Aluminum wheels ...................................... 322
Exterior ........................................................... 322 Interior .............................................................325
Radar sensor ...................................... 192, 227
Seat belts ........................................................325
Clock .................................................78, 82, 301
Coat hooks...................................................... 310
Compass ........................................................... 317
Condenser ..................................................... 340
Console box .................................................. 294
Consumption screen .....................................97
Coolant Capacity .......................................................... 419
Checking .......................................................339
Preparing and checking before winter..........................................................................263
Cooling system............................................. 339 Hybrid system overheating ................... 410
Cornering lights ............................................. 179 Replacing light bulbs ................................ 374
Cruise control Dynamic radar cruise control with full-
speed range ................................................216
Cup holders ................................................... 294
Current fuel consumption .......................... 89
Curtain shield airbags ....................................31
Customizable features .............................. 434
D
Daytime running light system ................... 177
Deck board .................................................... 297
Deck under tray ........................................... 296
Defogger Outside rear view mirrors..................... 277
Rear window ................................................ 277
Windshield .................................................... 277
Differential ........................................................ 421
Dimension ........................................................416
Dinghy towing.................................................. 161
Display BSM (Blind Spot Monitor).................... 226
Dynamic radar cruise control with full-
speed range ................................................216
Energy monitor .............................................. 97

Alphabetical Index465
Head-up display ........................................... 93
Intuitive parking assist.............................. 232
LTA (Lane-Tracing Assist) .....................210
Multi-information display .......................... 87
RCTA .............................................................. 239
Warning messages ..................................395
Distance until next engine oil change .. 80, 86
Do-it-yourself maintenance .................... 333
Door lock Doors................................................................ 108
Smart access system with push-button start .................................................................. 124
Wireless remote control......................... 106
Doors Automatic door lock ing and unlocking
system ............................................................... 111
Back door..........................................................112
Door glasses ..................................................145
Door lock........................................................ 108
Open door warning bu zzer .......... 109, 111
Outside rear view mirrors ...................... 142
Rear door child-protectors ....................... 111
Side doors ...................................................... 108
Drive distance .................................................. 89
Drive info 1/Drive info 2 .............................. 89
Driver’s seat position memory .................133
Drive-start control ........................................152
Driving................................................................152 Break-in tips ...................................................153
Correct driving posture ............................ 25
Driving mode select switch .................. 255
Hybrid vehicle driving tips ...................... 261
Procedures .....................................................152
Winter drive tips......................................... 263
Driving information display ........................ 88
Driving position memory............................133 Memory recall function ............................135
Driving range ................................................... 89
Driving support system information display ............................................................................. 90
Dynamic radar cruise control with full- speed range..................................................216
Warning message .........................224, 395
E
ECB (Electronically Controlled Brake Sys-
tem) ................................................................ 256
Eco drive mode ............................................ 255
EDR (Event data recorder) ........................... 8
E-Four .............................................................. 257
Elapsed time ..................................................... 89
Electric motor Location ............................................................. 62
Electric Power Steering (EPS) Function .......................................................... 257
Warning light .............................................. 388
Electronically Controlled Brake System (ECB) ............................................................ 256
Electronic key ................................................ 104 Battery-saving function............................ 125
If the electronic key does not operate properly ...................................................... 403
Replacing the battery .............................. 368
Emergency, in case of If a warning buzzer sounds.................. 386
If a warning light turns on...................... 386
If a warning message is displayed .... 395
If the 12-volt battery is discharged ... 405
If the electronic key does not operate properly ...................................................... 403
If the fuel filler do or cannot be opened
..........................................................................402
If the hybrid system will not start ....... 400
If the vehicle is trapped in rising water .......................................................................... 379
If you have a flat tire ................................. 399
If you lose your keys .................................402
If you think something is wrong......... 385
If your vehicle becomes stuck ...............413
If your vehicle has to be stopped in an emergency .................................................378
If your vehicle needs to be towed ...... 381
If your vehicle overheats ......................... 410

468Alphabetical Index
J
JackPositioning a floor jack............................ 336
Jam protection function Moon roof ...................................................... 148
Power back door opener and closer. 119
Power windows............................................145
K
Keyless entrySmart access system with push-button start .................................................................. 124
Wireless remote control......................... 106
Keys.................................................................... 104 Battery-saving function ............................125
Electronic key ............................................... 104
If the electronic key does not operate properly.......................................................403
If you lose your keys................................. 402
Key number plate ....................................... 104
Keyless entry .............................. 108, 113, 124
Mechanical key............................................ 104
Power switch ................................................. 162
Replacing the battery...............................368
Warning buzzer ........................................... 124
Wireless remote control key ................ 106
Knee airbags ...................................................... 31
L
Lane Tracing Assist (LTA) ....................... 205 Operation......................................................205
Warning messages .................................... 213
Language (multi-informa tion display) ..... 91
LATCH anchors ............................................. 52
Lever Auxiliary catch lever .................................335
Hood lock release lever.........................335
Shift lever.......................................................... 167
Turn signal lever .............................................171
Wiper lever......................................... 184, 188 Lexus climate concierge ...........................274
Lexus Enform Safety Connect.................. 56
Lexus Safety System+2.0 ..........................192
Automatic High Beam ............................. 180
Dynamic radar cruise control with full-
speed range ................................................216
LTA (Lane Tracing Assist) ................... 205
PCS (Pre-Collision System) ................. 198
RSA (Road Sign Assist)............................214
License plate lights Light switch ..................................................... 177
Replacing light bulbs ................................ 374
Light bulbs Replacing ....................................................... 374
Wattage .......................................................... 422
Lights Automatic High Beam system .............180
Cornering lights ...........................................179
Fog light switch ............................................ 183
Front interior lights ......................................291
Headlight switch........................................... 177
Illuminated entry system ........................ 290
Interior light list ........................................... 290
Luggage compartment light ................... 114
Personal lights ............................................. 292
Rear interior lights .......................................291
Replacing light bulbs ................................ 374
Turn signal lever ............................................ 171
Vanity lights ................................................... 301
Wattage .......................................................... 422
Welcome light illumination control ... 178
Lock steering column ..................................163
LTA (Lane Tracing Assist) ....................... 205 Operation ..................................................... 205
Warning messages.....................................213
Luggage cover ............................................. 298
M
Maintenance Do-it-yourself maintenance .................333
General maintenance .............................329
Maintenance data ....................................... 416

Alphabetical Index469
Maintenance requirements .................. 328
Malfunction indicator lamp ..................... 387
Menu icons........................................................ 87
Meter Changing the main meter location ..... 86
Clock ......................................................... 78, 82
Hybrid System Indicator .................. 79, 84
Indicators .......................................................... 76
Instrument panel light control ...... 80, 86
Meter control switches ..............................88
Meters ....................................................... 78, 82
Multi-information display .......................... 87
Settings ................................................................ 91
Warning lights .............................................386
Warning messages ..................................395
Mirrors Inside rear view mirror............................. 140
Outside rear view mirror defoggers 277
Outside rear view mirrors ...................... 142
Vanity mirrors............................................... 301
Moon roof Door lock linked moon roof operation.......................................................................... 148
Jam protection function........................... 148
Operation........................................................ 147
Multi-information display ............................ 87 Audio system-linked display................... 90
Drive information 1/Drive information 2............................................................................ 89
Driving information display......................88
Driving support system information dis- play ................................................................... 90
Dynamic radar cruise control with full- speed range ................................................ 216
Energy monitor.............................................. 97
G-force.............................................................. 90
LTA (Lane-Tracing Assist) .....................210
Menu icons ...................................................... 87
Meter control switches ..............................88
Navigation system-linked display ........ 90
Pop-up display............................................... 87
Settings ................................................................ 91 Suggestion function ..................................... 92
Units.....................................................................90
Warning messages.................................. 395
N
Navigation system-lin
ked display....90, 93
Noise from under vehicle ...............................6
O
Odometer ................................................ 80, 86
Odometer and trip meter display “ODO TRIP” switch .......................... 80, 86
Display items ......................................... 80, 86
Pop-up display ..................................... 80, 86
“ODO TRIP” switch ............................. 80, 86
Oil Engine oil......................................................... 418
Opener Back door ................................................ 113, 115
Fuel filler door ............................................... 190
Hood ................................................................335
Outside rear view mirrors ......................... 142 Adjustment ......................................................142
BSM (Blind Spot Monitor).................... 226
Folding...............................................................143
Linked mirror functi on when reversing
............................................................................143
Mirror position memory .......................... 133
Outside rear view mirror defoggers 277
RCTA function ............................................239
Outside temperature..... ....................... 78, 82
Overheating ................................................... 410
P
Paddle shift switches ..........................169, 170
Panic mode ..................................................... 106
Parking assist sensors (intuitive parking assist) ............................................................. 232
Parking brake.................................................. 172 Operation ........................................................ 172

470Alphabetical Index
Parking brake engaged warning buzzer........................................................................... 174
Warning light ...............................................389
Warning message....................................... 174
Parking lights Light switch ..................................................... 177
Replacing light bulbs................................ 374
Parking Support Brake function (rear- crossing vehicles) .......................... 243, 252Function .......................................................... 252
Parking Support Brake function (static objects) .............................................. 243, 247Function .......................................................... 247
PCS (Pre-Collision System) .................... 198 Function ........................................................... 198
PCS OFF switch ........................................200
Warning light ............................................... 392
Personal lights............................................... 290
PKSA (Parking Support Alert) ................231
PKSB (Parking Support Brake)............. 243 Warning message..................................... 246
Power back door open er and closer ..... 115
Power control unit coolant ...................... 339 Capacity ...........................................................419
Checking ....................................................... 339
Preparing and checking before winter......................................................................... 263
Power easy access system ........................133
Power outlets ................................................ 302
Power steering (Electric Power Steering system).......................................................... 257Warning light .............................................. 388
Power switch ................................................... 162 Auto power off function ...........................164
Changing the power switch modes ..164
If your vehicle has to be stopped in an
emergency ................................................ 378
Starting the hybrid system....................... 162
Power windows ..............................................145 Door lock linked window operation..146
Jam protection function............................145
Operation........................................................145 Window lock switch.................................. 146
Pre-Collision System (PCS) .................... 198 Function ........................................................... 198
PCS OFF switch ....................................... 200
Warning light ...............................................392
R
Radar cruise control (dynamic radar cruise control with full-speed range)...............216
Radiator ........................................................... 340
RCTA (Rear Cross Traffic Alert) 231, 239
RCTA Function ..........................................................239
Warning message .....................................240
Rear Cross Traffic Alert (RCTA) 231, 239
Rear seat Folding down the rear seatbacks ........132
Rear side marker lights Light switch ..................................................... 177
Rear turn signal lights Replacing light bulbs ................................ 374
Turn signal lever ............................................ 171
Rear view mirror Inside rear view mirror ............................. 140
Outside rear view mirrors.......................142
Rear window defogger ..............................277
Rear window wiper...................................... 188
Refueling .......................................................... 190 Capacity ...........................................................417
Fuel types .........................................................417
Opening the fuel tank cap ..................... 190
When the fuel filler door cannot be
opened.........................................................402
Regenerative braking ................................... 63
Remote Touch .............................................. 270
Replacing Electronic key battery ............................. 368
Fuses.................................................................370
Light bulbs ..................................................... 374
Tires ................................................................. 355
Resetting the message indicating mainte- nance is required ...................................... 328