2015 LEXUS RX350 engine overheat

When trouble arises
5
7335-1. Essential information
Emergency flashers............... 734
If your vehicle needs to be
towed ...................................... 735
If you think something is
wrong ....................................... 742
Fuel pump shut off system.... 743 5-2. Steps to take in an
emergency
If a warning light turns
on or a warning buzzer
sounds... .................................. 744
If a warning message is
displayed................................ 754
If you have a flat tire................ 774
If the engine will not start .... 789
If the shift lever cannot be
shifted from P ......................... 791
If you lose your keys .............. 792
If the electronic key does
not operate properly.......... 793
If the vehicle battery is
discharged ............................. 796
If your vehicle overheats ..... 799
If the vehicle becomes
stuck........................................ 802
If your vehicle has to
be stopped in an
emergency ............................ 804

5
When trouble arises
7555-2. Steps to take in an emergency
Stop the vehicle immediately.
A buzzer sounds and a warning message is shown on th e multi-informa-
tion display. The following warning indicates the possibility of damage to
the vehicle that may lead to an accident. Immediately stop the vehicle in a
safe place and contact your Lexus dealer. Wa r n i n g m e s s a g e Details
(U.S.A.)
(Canada) Indicates abnormal engine oil pressure
The warning light may come on if the engine oil pres-
sure is too low.
(Flashes)
(AWD models) Indicates the AWD system has overheated

7645-2. Steps to take in an emergency
Indicates that the engine
has overheated
A buzzer also sounds. Stop and check.
(  P. 7 9 9 )
Indicates that remaining
fuel is approximately 2.8
gal. (10.7 L, 2.3 Imp. gal.)
or less Refuel the vehicle.
(Flashes) Indicates that the
“ENGINE START STOP”
switch is turned off or
turned to ACCESSORY
mode and the driver's
door is opened while the
lights are turned on. Turn the lights off.
(If equipped) Indicates that the Blind
Spot Monitor sensors or
the surrounding area on
the bumper is dirty or
covered with ice. Clean the sensor and its
surrounding area on the
bumper.Wa r n i n g m e s s a g e Details Correction procedure

5
When trouble arises
7995-2. Steps to take in an emergency
If your vehicle overheats
Correction procedures
Stop the vehicle in a safe place and turn off the air conditioning
system, and then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine has cooled down
sufficiently, inspect the hoses and
radiator core (radiator) for any
leaks.
Radiator
Cooling fans If a large amount of coolant leaks,
immediately contact your Lexus
dealer.
The coolant level is satisfactory if it
is between the “FULL” and “LOW”
lines on the reservoir.
Reservoir
“FULL” line
“LOW” line
Radiator capThe following may indicate that your vehicle is overheating.
● “ENGINE OVERHEAT” is shown on the multi-information display.
● Steam comes out from under the hood. STEP 1
STEP 2
STEP 3
STEP 4

872Alphabetical index
Card key ......................................................30
Care
Exterior .................................................. 650
Interior .....................................................653
Seat belts................................................654
Cargo capacity ....................................... 301
Cargo hooks ........................................... 627
CD changer
CD ................................................383, 492
MP3 .............................................. 384, 501
WMA disc.................................. 384, 501
CD player .................................... 383, 492
Chains .......................................................302
Child restraint system
Booster seats, definition ................... 137
Booster seats, installation ..................141
Convertible seats, definition .......... 137
Convertible seats, installation..........141
Front passenger occupant
classification system........................ 132
Infant seats, definition......................... 137
Infant seats, installation ........................141
Installing CRS with LATCH
system .................................................... 142
Installing CRS with seat belts......... 144
Installing CRS with top tether
straps ..................................................... 148
Child safety
Airbag precautions............................. 127
Back door precautions...................... 62
Battery
precautions ...........................682, 796
Child restraint system........................ 137
Child-protectors ................................... 53
How your child should wear
the seat belt .......................................... 85 Installing child restraints ..................... 141
Moon roof precautions .................... 104
Power window lock switch ............. 98
Power window precautions...........100
Removed electron ic key battery
precautions ........................................702
Seat belt extender precautions ..... 89
Seat belt precautions.......................... 86
Seat heater precautions................... 621
Child-protectors...................................... 53
Cleaning
Exterior ................................................... 650
Interior..................................................... 653
Seat belts ............................................... 654
Clock* .......................................................... 611
Coat hooks.............................................. 623
Coin holder ............................................. 606
Compass .................................................. 638
Condenser .............................................. 678
Console box ........................................... 604
Coolant
Engine coolant..................................... 677
Cooling system
Engine overheating .......................... 799
Cornering assist sensors ................... 245
Cruise control
Cruise control ...................................... 227
Dynamic radar cruise control......232
Cup holders ............................................. 601
Curtain shield airbags ........................... 119
Customizable features ....................... 834C

873Alphabetical index
Daytime running light system............ 213
Defogger*
Rear window.......................................... 361
Side mirrors............................................ 361
Dimensions ............................................. 806
Dinghy towing ....................................... 323
Display
Multi-information display............... 200
Trip information .................................. 203
Warning message ............................ 754
Do-it-yourself maintenance..............664
Door courtesy lights
Door courtesy lights ........................ 595
Wattage ................................................... 817
Door lock
Back door ................................................ 56
Side door ...................................................52
Wireless remote control....................49
Door pockets ......................................... 600
Doors
Back door ................................................ 56
Door lock ................................35, 49, 52
Door windows ....................................... 98
Power back door ................................. 56
Side door ...................................................52
Side mirrors............................................. 95
Driver's seat belt reminder light ..... 747
Driving
Break-in tips ...........................................155
Correct posture ..................................... 117
Procedures ............................................. 154
Utility vehicle
precautions ........................................292
Winter driving tips ............................ 302
Driving position memory ...................... 76 Electric power steering ...................... 269
Electronic features control .............. 200
Electronic key
If the electronic key does not
operate properly ............................ 793
Emergency flashers
Switch....................................................... 734
Emergency, in case of
If a warning buzzer sounds........... 744
If a warning light turns on............... 744
If a warning message is
displayed............................................. 754
If the back door opener is
inoperative ..............................................61
If the electronic key does not
operate properly ............................ 793
If the engine will not start............... 789
If the shift lever cannot be
shifted from P .....................................791
If the vehicle has a discharged
battery ..................................................796
If you have a flat tire ......................... 774
If you lose your keys ......................... 792
If you think something is
wrong ................................................... 742
If your vehicle becomes stuck .... 802
If your vehicle has to be
stopped in an emergency ......... 804
If your vehicle needs to be
towed....................................................735
If your vehicle overheats ................799D E
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.

874Alphabetical index
Engine
Accessory mode ................................ 165
Compartment ..................................... 670
Engine switch........................................ 165
Hood........................................................ 667
How to start the engine................... 165
Identification number.......................807
If the engine will not start ...............789
Ignition switch....................................... 165
Overheating......................................... 799
Engine compartment cover ...............671
Engine coolant
Capacity .................................................... 811
Checking ............................................... 677
Preparing and checking
before winter .................................... 302
Engine coolant temperature
gauge.........................................................191
Engine immobilizer system..................110
Engine oil
Capacity ................................................ 809
Checking ............................................... 674
Preparing and checking
before winter .................................... 302
EPS ............................................................. 269
Event data recorder ............................... 26 Floor mat .................................................. 625
Fluid
Brake ......................................................... 814
Washer................................................... 683
Fog lights
Replacing light bulbs ......................... 719
Switch ........................................................ 215
Wattage ................................................... 817
Footwell light .......................................... 595
Front fog lights
Replacing light bulbs ......................... 719
Switch ........................................................ 215
Wattage ................................................... 817
Front passenger occupant
classification system ...........................132
Front passenger's seat belt
reminder light ......................................747
Front seats
Adjustment .............................................. 68
Driving position memory .................. 76
Flattening seatbacks ............................69
Front side marker lights
Replacing light bulbs ......................... 719
Front turn signal lights
Replacing light bulbs ......................... 719
Wattage ................................................... 817F

877Alphabetical index
Mirrors
Inside rear view mirror .......................92
Side mirror heaters* .......................... 361
Side mirrors............................................. 95
Vanity mirrors .......................................610
Mobile Assistant*................................. 343
Moon roof .................................................. 101
MP3 disc* ..................................... 384, 501
Multi-display light control................... 615
Multi-information display
Switches ................................................. 200
Trip information .................................. 203
Noise from under vehicle .....................23
Odometer .................................................. 191
Oil
Engine oil ............................................... 674
Opener
Back door ................................................ 56
Fuel filler door ...................................... 105
Hood ....................................................... 667
Outer foot lights
Outer foot lights................................. 595
Wattage ................................................... 817
Outside rear view mirrors
Adjusting and folding ......................... 95
Mirror position memory ....................76
Outside temperature display*.......... 613
Overhead console .............................. 606
Overhead courtesy lights
Overhead courtesy lights ............. 595
Wattage ................................................... 817
Overheating, Engine ...........................799 Paddle shift switches .................... 171, 178
Parking assist sensors* ....................... 245
Parking brake .......................................... 189
Parking lights
Replacing light bulbs ..........................719
Switch.......................................................... 211
PCS
Function ..................................................278
Pre-collision braking off
switch.................................................... 279
Warning light ....................................... 745
Personal lights
Switch...................................................... 596
Phone* .......................................... 433, 565
Power back door ..................................... 56
Power easy access system .................. 78
Power outlet............................................. 616
Power windows ........................................98
Pre-collision system
Function ..................................................278
Pre-collision braking off
switch.................................................... 279
Warning light ....................................... 745
Radar cruise control ............................ 232
Radiator .................................................... 678
Radio*............................................ 368, 483
Rear seat entertainment system*
Rear seats
Folding down .......................................... 72
Seat adjustment ..................................... 72
Rear turn signal lights
Replacing light bulbs ..........................719
Wattage ................................................... 817
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.N O P
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