engine coolant LEXUS RX270 2014 User Guide

478
4-3. Do-it-yourself maintenance
RX350/270_EE
Radiator and condenser
Check the radiator and condenser and clear away any foreign objects.
If any of the above parts are extremely dirty or you are not sure of their
condition, have your vehicle checked by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
■If the coolant level drops within a short time after replenishing
Visually check the radiator, hoses, radiator cap, drain cock and water pump.
If you cannot find a leak, have any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional, test the cap and check for leaks in the
cooling systems.
CAUTION
■When the engine is hot
Do not remove the radiator cap.
The cooling system may be under pressure and may spray hot coolant if the cap is
removed, causing serious injuries, such as burns.
NOTICE
■When adding engine coolant
Coolant is neither plain water nor straight antifreeze. The correct mixture of water
and antifreeze must be used to provide proper lubrication, corrosion protection
and cooling. Be sure to read the antifreeze or coolant label.
■If you spill coolant
Be sure to wash it off with water to prevent damage to parts or paint.
CAUTION
■When the engine is hot
Do not touch the radiator or condenser as they may be hot and cause serious inju-
ries, such as burns.
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5
541
5-1. Essential information
When trouble arises
RX350/270_EE
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably needs
adjustment or repair. Contact any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional as soon as possible.
■Visible symptoms
●Fluid leaks under the vehicle.
(Water dripping from the air conditioning after use is normal.)
●Flat-looking tires or uneven tire wear
●Engine coolant temperature gauge needle continually points
higher than normal.
■Audible symptoms
●Changes in exhaust sound
●Excessive tire squeal when cornering
●Strange noises related to the suspension system
●Pinging or other noises related to the engine
■Operational symptoms
●Engine missing, stumbling or running rough
●Appreciable loss of power
●Vehicle pulls heavily to one side when braking
●Vehicle pulls heavily to one side when driving on a level road
●Loss of brake effectiveness, spongy feeling, pedal almost touches
the floor
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598
5-2. Steps to take in an emergency
RX350/270_EE
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 any autho-
rized Lexus dealer or repairer, or
another duly qualified and
equipped professional.
The coolant level is satisfactory if it
is between the “FULL” and “LOW”
lines on the reservoir.
Reservoir
“FULL” line
“LOW” line
“Radiator cap
The following may indicate that your vehicle is overheating.
●“ENGINE OVERHEAT” is shown on the multi-information display.
●Steam comes out from under the hood.
STEP1
STEP2
STEP3
STEP4
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5
599
5-2. Steps to take in an emergency
When trouble arises
RX350/270_EEAdd coolant if necessary.
(→P. 4 7 0 )
Water can be used in an emer-
gency if coolant is unavailable.
Start the engine and turn the air conditioning system on to check
that the radiator cooling fans operate and to check for coolant
leaks from the radiator or hoses.
The fans operate when the air conditioning system is turned on immedi-
ately after a cold start. Confirm that the fans are operating by checking
the fan sound and air flow. If it is difficult to check these, turn the air con-
ditioning system on and off repeatedly.
(The fans may not operate in freezing temperatures.)
If the fans are not operating:
Stop the engine immediately and contact any authorized
Lexus dealer or repairer, or another duly qualified and
equipped professional.
If the fans are operating:
Have the vehicle inspected at the nearest authorized Lexus
dealer or repairer, or another duly qualified and equipped pro-
fessional.
STEP5
STEP6
STEP7
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600
5-2. Steps to take in an emergency
RX350/270_EE
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.
●Keep hands and clothing (especially a tie, a scarf or a muffler) away from the fans
and belts. Failure to do so may cause the hands or clothing to be caught, resulting
in serious injury.
●Do 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.
NOTICE
■When adding engine coolant
Wait until the engine has cooled down before adding engine coolant.
When adding coolant, do so slowly. Adding cool coolant to a hot engine too quickly
can cause damage to the engine.
■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 any coolant additives.
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639
Alphabetical index
RX350/270_EE
Child safety
Airbag precautions ............................. 137
Back door precautions ...................... 66
Child restraint system........................ 142
Child-protectors ................................... 57
How your child should wear
the seat belt ............................................ 91
Installing child restraints ...................152
Moon roof precautions ....................107
Power window lock switch.............. 101
Power window precautions .......... 103
Removed electronic key battery
precautions....................................... 503
Seat belt precautions .......................... 92
Seat heater precautions .................440
Battery precautions
...................................................... 481, 594
Child-protectors ...................................... 57
Cleaning
Exterior.................................................... 452
Interior .....................................................455
Seat belts................................................456
Clock* ....................................................... 432
Coat hooks .............................................. 442
Coin holder ............................................. 427
Condenser .............................................. 478
Console box ........................................... 426
Coolant
Engine coolant .................................... 477Cooling system
Engine overheating ..........................598
Cornering assist sensors ................... 248
Cruise control
Cruise control ..................................... 230
Dynamic radar cruise control ......234
Cup holders ............................................ 423
Curtain shield airbags ........................... 131
Customizable features....................... 622
Daytime running light system .......... 220
Defogger*
Rear window.......................................... 321
Side mirror .............................................. 321
Dimensions ............................................. 606
Display
Multi-information display............... 203
Trip information.................................. 206
Warning message ............................ 552
Do-it-yourself maintenance ............... 461
Door courtesy lights
Door courtesy lights .......................... 417
Wattage ................................................... 619
Door lock
Back door ................................................ 60
Side door .................................................. 56
Wireless remote control .................. 53
Door pockets ......................................... 422
D
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.
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641
Alphabetical index
RX350/270_EE
Engine compartment cover ............. 470
Engine coolant
Capacity ...................................................613
Checking ............................................... 477
Preparing and checking before
winter.................................................... 296
Engine oil
Capacity .................................................. 610
Checking ............................................... 472
Preparing and checking before
winter.................................................... 296
Engine switch .......................................... 180
EPS ...............................................................271
Floor mat .................................................. 444
Fluid
Washer ...................................................482
Fog lights
Replacing light bulbs......................... 516
Switch ...................................................... 222
Wattage................................................... 619
Footwell light ............................................417
Front fog lights
Replacing light bulbs......................... 516
Switch ...................................................... 222
Wattage................................................... 619
Front passenger's seat belt
reminder light...................................... 546
Front position lights
Replacing light bulbs......................... 516
Switch ........................................................ 217Front seats
Adjustment ............................................... 73
Driving position memory ................... 81
Flattening seatbacks ............................ 74
Front turn signal lights
Replacing light bulbs .........................516
Wattage ................................................... 619
Fuel
Capacity.................................................609
Fuel gauge .............................................. 196
Fuel pump shut off system ............ 542
Information............................................ 620
Refueling ................................................... 110
Type ......................................................... 609
Fuel door ..................................................... 110
Fuel filler door ........................................... 110
Fuel pump shut off system ................ 542
Fuses .......................................................... 504
Gauges .......................................................196
Glove box.................................................. 421
Hands-free system for
mobile phone*......................................391
Hazard lights
Switch ...................................................... 532
Head restraints
Adjusting ..................................................87
Headlight cleaner................................. 229
F
G
H
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.
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650
RX350/270_EE
What to do if...
What to do if...
A tire puncturesP. 5 7 2If you have a flat tire
The engine does not start
P. 5 8 7If the engine will not start
P. 115Engine immobilizer system
P. 5 9 4If the vehicle battery is discharged
The shift lever cannot be
moved outP. 5 8 9If 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 9 8If your vehicle overheats
The key is lostP. 5 9 0If you lose your keys
The battery runs outP. 5 9 4If the vehicle battery is discharged
The doors cannot be lockedP. 5 6Side doors
P. 6 0Back door
The horn begins to soundP. 1 2 2Alarm
The vehicle is stuck in mud or
sandP. 6 0 1If the vehicle becomes stuck
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