engine overheat LEXUS RX350 2011 User Guide

5

When trouble arises
587
5-2. Steps to take in an emergency
If your vehicle overheats
If your engine overheats:
Stop the vehicle in a safe place and turn off the air conditioning
system.
Check to see if steam is coming out from under the hood.
If you see steam:
Stop the engine. Carefully lift the hood after the steam sub-
sides and then restart the engine.
If you do not see steam:
Leave the engine running and carefully lift the hood.
Remove the engine compartment cover. (→P. 464)
Check to see if the cooling fan is operating.
If the fan is operating:
Wait until the temperature of the engine (shown on the instru-
ment panel) begins to fall and then stop the engine.
If the fan is not operating:
Stop the engine immediately and call your Lexus dealer.
After the engine has cooled
down sufficiently, check the
engine coolant level and inspect
the radiator core (radiator) for
any leaks.
STEP1
STEP2
STEP3
STEP4
STEP5

588
5-2. Steps to take in an emergency
nOverheating
If you observe the following, your vehicle may be overheating:
lThe engine coolant temperature gauge enters the red zone or a loss of power is
experienced.
lSteam comes out from under the hood.
CAUTION
nTo prevent an accident or injury when inspecting under the hood of your vehicle
lIf steam is seen coming from under the hood, do not open the hood until the
steam has subsided. The engine compartment may be very hot, causing serious
injuries such as burns.
lKeep hands and clothing away from the fans and drive belt while the engine is
running.
lDo not loosen the radiator cap while the engine and radiator are hot.
Serious injury, such as burns, may result from hot coolant and steam released
under pressure.
Add engine coolant if neces-
sary.
Water can be used in an emer-
gency if engine coolant is
unavailable. (→P. 599)
Have the vehicle inspected at the nearest Lexus dealer as soon as pos-
sible.
STEP6

654
Alphabetical index
Cleaning
Exterior................................................... 444
Interior ..................................................... 447
Seat belts................................................448
Clock .......................................................... 410
Coat hooks ............................................... 419
Compass .................................................. 432
Condenser .............................................. 472
Console box ...........................................404
Cooling system
Engine overheating ..........................587
Cornering assist sensors ...................220
Cruise control
Cruise control ..................................... 204
Dynamic radar cruise control .....208
Cup holders ............................................402
Curtain shield airbags.......................... 109
Customizable features ........................ 621
Daytime running light system ............187
Defogger
Rear window ......................................... 281
Side mirrors..............................................87
Dimensions ............................................. 594
Dinghy towing........................................ 270
Display
Multi-information display ................ 173
Trip information.................................... 176
Warning message ............................ 545
Do-it-yourself maintenance ............. 457
Door courtesy lights
Door courtesy lights ........................ 396
Wattage ................................................. 605
Door lock
Back door ................................................ 50
Side door................................................... 47
Wireless remote control ................... 43
Door pockets .......................................... 401
Doors
Back door ................................................ 50
Door windows ....................................... 90
Door lock .................................. 31, 43, 47
Power back door ................................. 50
Side door................................................... 47
Side mirrors..............................................87
Driver's seat belt reminder light ..... 537
Driving
Break-in tips........................................... 145
Correct posture................................... 107
Utility vehicle precautions..............244
Procedures............................................. 144
Winter driving tips ............................ 254
Driving position memory...................... 70
D

655
Alphabetical index
Electric power steering ....................... 231
Electronic features control ................ 173
Electronic key
If the electronic key does not
operate properly ............................. 581
Emergency flasher switch .................524
Emergency, in case of
If the electronic key does not
operate properly ............................. 581
If the engine will not start ................577
If the shift lever cannot be
shifted from P ................................... 579
If the vehicle has a
discharged battery ........................ 584
If a warning buzzer sounds .......... 535
If a warning light turns on .............. 535
If a warning message is
displayed ............................................ 545
If you have a flat tire ........................ 564
If you lose your keys ....................... 580
If you think something is
wrong..................................................... 531
If your vehicle becomes stuck ....590
If your vehicle has to be stopped
in an emergency...............................591
If your vehicle needs to be
towed ................................................... 525
If your vehicle overheats................ 587
Engine
Accessory mode................................. 153
Compartment......................................463
Engine switch ........................................ 153
Hood ....................................................... 460
How to start the engine ................... 153
Identification number ...................... 595
If the engine will not start................ 577
Ignition switch ....................................... 153
Overheating ........................................ 587
Engine compartment cover ............. 464
Engine coolant
Capacity ................................................ 599
Checking ...............................................470
Preparing and checking
before winter ....................................254
Engine coolant temperature
gauge....................................................... 166
Engine immobilizer system..................101
Engine oil
Capacity .................................................597
Checking .............................................. 466
Preparing and checking
before winter ....................................254
Engine oil maintenance data............468
EPS .............................................................. 231
Event data recorder ............................533
E

659
Alphabetical index
Outer foot lights
Outer foot lights................................. 396
Wattage .................................................605
Outside rear view mirrors
Adjusting and folding ......................... 87
Mirror position memory ................... 70
Outside temperature display ..............411
Overhead console .............................. 406
Overhead courtesy lights
Overhead courtesy lights ............. 396
Wattage .................................................605
Overheating, Engine .......................... 587
Parking assist sensors ........................ 220
Parking brake .......................................... 164
Parking lights
Replacing light bulbs ...........................511
Switch ........................................................184
Wattage .................................................605
PCS............................................................ 240
Personal lights
Switch ...................................................... 397
Power back door .................................... 50
Power outlet ............................................. 413
Power windows........................................ 90
Pre-collision system ............................ 240
Radar cruise control ........................... 208
Radiator .................................................... 472
Radio ......................................................... 287
Rear seat
Folding down ..........................................66
Seat adjustment .....................................66
Rear turn signal lights
Replacing light bulbs ......................... 512
Wattage ................................................. 605
Rear view mirror
Compass................................................ 432
Rear view monitor system................. 227
Rear window defogger ....................... 281
Rear window wiper .............................. 202
Remote Touch*
Replacing
Electronic key battery ..................... 496
Fuses........................................................ 498
Light bulbs ................................................ 511
Tires ......................................................... 564
Wireless remote control
battery ................................................. 496
Roof luggage carrier ........................... 249
Reporting safety defects for
U.S. owners .......................................... 632
P
*: Refer to the “Navigation System Owner’s Manual”.
R

663
Alphabetical index
Vanity lights
Vanity lights .......................................... 409
Wattage .................................................605
Vanity mirrors........................................ 409
VDIM .......................................................... 231
Vehicle dynamics integrated
management......................................... 231
Vehicle identification number ........ 595
Vehicle stability control ....................... 231
VSC ............................................................. 231
Warning buzzers
Brake system ....................................... 535
Open door .......................................... 537
Seat belt reminder ............................ 537
Warning lights
Anti-lock brake system .................. 536
Brake assist system .......................... 536
Brake system ....................................... 535
Charging system ............................... 535
Electric power steering .................. 536
Electronic engine control
system.................................................. 536
Low fuel level....................................... 537
Low tire pressure .............................. 537
Malfunction indicator lamp .......... 536
Master warning light ........................ 537
Open door ........................................... 537
Pre-collision system ......................... 536
Pretensioners ...................................... 536
Seat belt reminder light .................. 537
Slip indicator ........................................ 536
SRS airbags .......................................... 536
Tire pressure........................................ 537
Warning messages
Adaptive front lighting system.....547
Automatic transmission fluid ........547
Anti-lock brake system ................... 547
AWD system ................546, 547, 551
Brake lamp system............................ 547
Brake system....................................... 545
Dynamic radar cruise
control system....................... 547, 551
Electric power steering................... 547
Engine oil maintenance ................... 551
Engine oil pressure .......................... 546
Engine overheat .................................. 551
Headlight leveling .............................. 547
Hood ......................................................... 551
Intuitive parking assist ........... 551, 547
Low fuel ................................................... 551
Moon roof .............................................. 551
Open door ............................................. 551
Parking brake ....................................... 551
Pre-collision system............... 547, 551
Smart access system with
push-button start ........................... 556
SRS airbags........................................... 547
Steering lock......................................... 547
Washer fluid .......................................... 551
V
W

665
What to do if...
What to do if...
A tire puncturesP. 5 6 4If you have a flat tire
The engine does not start
P. 5 7 7If the engine will not start
P. 1 0 1Engine immobilizer system
P. 5 8 4If the battery is discharged
The shift lever cannot be
moved outP. 5 7 9
If the shift lever cannot be shifted
from P
The engine coolant temperature
gauge enters the red zone
Steam can be seen coming
from under the hood
P. 5 8 7If your vehicle overheats
The key is lostP. 5 8 0If you lose your keys
The battery runs outP. 5 8 4If the battery is discharged
The doors cannot be lockedP. 4 7Side doors
P. 5 0Back door
The horn begins to soundP. 1 0 3Alarm
The vehicle is stuck in mud or
sandP. 5 9 0If the vehicle becomes stuck