2010 Lexus GX460 cooling

655
4-3. Do-it-yourself maintenance
4
Maintenance and care
GX460_CANADA (OM60F29U)
19ECU-IG NO.210 A
Rear window defogger, outside rear
view mirror memory, seat heater/ ven-
tilator switch, inverter relay, air condi-
tioning system, EC mirror, BODY
ECU, exhaust gas sensor, parking
assist sensor, navigation system,
DSS#2 ECU, meter switch, accessory
meter, folding seat ECU, O/H IG,
head light cleaner, rear air condition-
ing system, deicer, D-module, rain
sensor, air suspension, RR VLV ECU,
steering heater, LKA, P/SEAT IND
20S/HTR FR20 ASeat heater and ventilator
21P/ S E AT F R30 AFront power seat (right)
22DOOR P30 A
Front power window (passenger’s
side), outside rear view mirror mem-
ory
23DOOR10 APo w e r w i n d o w
24DOOR D25 AFront power window (driver’s side)
25DOOR RR25 ARear power window (right)
26S/ROOF25 AMoon roof
27WIP30 AWindshield wipers and washer
28WA S H E R20 AWindshield wipers and washer, rear
window wipers and washer
29COOLING10 ACool box
FuseAmpereCircuit
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5
When trouble arises
743
5-2. Steps to take in an emergency
GX460_CANADA (OM60F29U)
CAUTION
■Avoiding battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flammable
gas that may be emitted from the battery:
●Make sure the jumper cable is connected to the correct terminal and that it is not
unintentionally in contact with any part other than the intended terminal.
●Do not allow the + and - clamps of the jumper cables to come into contact with
each other.
●Do not smoke, use matches, cigarette lighters or allow open flame near the bat-
tery.
■Battery precautions
The battery contains poisonous and corrosive acidic electrolyte, while related parts
contain lead and lead compounds. Observe the following precautions when han-
dling the battery:
●When working with the battery, always wear safety glasses and take care not to
allow any battery fluids (acid) to come into contact with skin, clothing or the vehi-
cle body.
●Do not lean over the battery.
●If the battery fluid comes into contact with the skin or eyes, immediately wash the
affected area with water and seek medical attention.
Place a wet sponge or cloth over the affected area until medical attention can be
received.
●Always wash your hands after handling the battery support, terminals, and other
battery-related parts.
●Do not allow children near the battery.
NOTICE
■When handling jumper cables
When connecting the jumper cables, ensure that they do not become entangled in
the cooling fans or belt.
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744
5-2. Steps to take in an emergency
GX460_CANADA (OM60F29U)
If your vehicle overheats
If the engine overheats:
Stop the vehicle in a safe place and turn off the automatic 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 covers. ( →P. 609)
Check to see if the cooling fan is operating.
If the fan is operating: Wait until the engine coolant temperature gauge begins to
fall and then stop the engine.
If the fan is not operating: Stop the engine and call your local Lexus dealer.STEP1
STEP2
STEP3
STEP4
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757
6-1. Specifications
6
Vehicle specifications
GX460_CANADA (OM60F29U)
Cooling system
Ignition system
Capacity
(reference)
With rear
heater16.3 qt. (15.4 L, 13.6 Imp.qt.)
Without rear
heater14.5 qt. (13.7 L, 12.1 Imp.qt.)
Coolant type
Use either of the following:• “Toyota Super Long Life Coolant”
• A similar high-quality ethylene glycol-
based non-silicate, non-amine, non-nitrite,
and non-borate coolant with long-life
hybrid organic acid technology
Do not use plain water alone.
Spark plug
MakeDENSO SK20HR11
Gap0.043 in. (1.1 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
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814
Alphabetical index
GX460_CANADA (OM60F29U)
Conversation mirror ...........................534
Cool box...................................................528
Cooling systemEngine overheating .......................... 744
Cornering assist sensors ...................259
Crawl Control........................................323
Cruise control Cruise control ..................................... 242
Dynamic radar crui se control ..... 246
Cup holders ............................................ 522
Curtain shield airbags............................ 121
Customizable features .......................783
Daytime running light system .......... 224
DAC........................................................... 327
Defogger
Rear window........................................404
Side mirror ............................................404
Dimension ................................................ 752
Dinghy towing ....................................... 380
Display Dynamic radar crui se control ..... 246
Multi-information display ........................................ 204, 212
Trip information ........................ 204, 212
Warning message............................ 698
Do-it-yourself maintenance .............602
Door courtesy lights Door courtesy lights............................ 511
Wattage.................................................. 763
Door pocket............................................520
Doors Back door................................................. 54
Power windows..................................... 101
Door lock...........................................48, 51
Rear door child protector ................ 52 Side doors.................................................. 51
Side mirrors.............................................. 97
Downhill assist control system ........ 327
Driver’s seat belt reminder light ..... 690
Driving Correct posture.....................................119
Off-road precautions...................... 348
Procedures............................................. 168
Winter driving tips .............................. 361
Driving position memory...................... 79
Electronic key
If the electronic key does not operate properly............................ 738
Emergency, in case of If the electronic key does not
operate properly............................ 738
If the engine will not start ................734
If the shift lever cannot be shifted from P....................................736
If the vehicle has discharged battery ................................................... 741
If the warning buzzer sounds...... 686
If the warning light turns on..........686
If the warning message is displayed ............................................ 698
If you have a flat tire .........................720
If you lose your keys ......................... 737
If you think something is wrong ....................................................681
If your vehicle becomes stuck ..... 747
If your vehicle has to be stopped in an emergency ..........749
If your vehicle needs to be
towed ................................................... 675
If your vehicle overheats.................744
D
E
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