radiator Lexus HS250h 2012 User Guide

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When trouble arises
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5-2. Steps to take in an emergency
HS250h_U_75050U
CAUTION
■To prevent an accident or injury when inspecting under the hood of your vehicle
●If 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.
●Check that the indicator on the “POWER” switch and the READY indicator are
off.
●For vehicles with a hybrid system, there are times when the gasoline engine auto-
matically starts to run or the cooling fans suddenly start to operate. Do not touch
or approach the rotating parts of the belt or fans. Doing so may lead to fingers,
clothes or tools getting caught, resulting in injury.
●Do not loosen the coolant reservoir cap while the hybrid system and radiator are
hot.
Serious injuries, such as burns, may result from hot coolant and steam released
under pressure.
NOTICE
■When adding engine/power control unit coolant
Wait until the hybrid system has cooled down before adding engine/power control
unit coolant.
When adding coolant, do so slowly. Adding cool coolant to a hot hybrid system too
quickly can cause damage to the hybrid system.
■To prevent damage to the cooling system
Observe the following precautions:
●Avoid contaminating the coolant with foreign matter (such as sand or dust etc.)
●Do not use commercially available coolant additives

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Alphabetical index
HS250h_U_75050U
Outside rear view mirrorsAdjusting and folding ......................... 87
Driving position memory................... 72
Mirror position memory ....................72
Outside rear view mirror defogger switch* ............................... 274
Outside temperature display.............177
Overhead console ...............................384
Overheating, Engine...........................552
Overheating, Hybrid system ...........552
Parking brake ...........................................167
Parking lights Replacing light bulbs......................... 481
Switch ......................................................... 191
Wattage................................................. 568
PCS ............................................................ 245
Personal lights Personal lights ..................................... 375
Switch ...................................................... 375
Wattage................................................. 568
Power easy access system................... 69
Power outlet........................................... 388
Power switch ........................................... 152
Power windows ........................................90
Pre-collision system.............................245
Radar cruise control ............................. 216
Radiator .................................................... 444
Radio* ....................................................... 279
Radio data system* ............................... 281
RDS* ........................................................... 281
Rear side marker lights Replacing light bulbs..........................491
Wattage................................................. 568
Rear sunshade .......................................392 Rear turn signal lights
Replacing light bulbs ......................... 481
Wattage .................................................568
Rear view mirror
Compass ............................................... 404
Rear view monitor system*
Rear window defogger* .....................274
Remote Touch*
Replacing Electronic key battery ......................467
Fuses........................................................ 469
Light bulbs .............................................. 481
Tires.......................................................... 532
Reporting safety defects for
U.S. owners..........................................598
Reset the maintenance data ............ 424
Safety connect .......................................408
Scuff lighting ........................................... 374
Seat belts
Adjusting the seat belt ........................78
Automatic Locking Retractor ......... 79
Child restraint system installation ............................................ 130
Cleaning and maintaining the seat belt......................................... 421
Emergency Locking Retractor ...... 79
How to wear your seat belt ............. 77
How your child should wear the seat belt........................................... 79
Pre-collision seat belts.................... 245
Pregnant women, proper seat belt use ......................... 79
Reminder light.....................................505
Seat belt extenders.............................. 80
Seat belt pretensioners ......................78
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