2015 LEXUS LS600H check engine

4476-3. Do-it-yourself maintenance
6
Maintenance and care
LS600hL_U(OM50E41U)
Check the radiator and condenser and clear away any foreign objects.
If either of the above parts is extremely dirty or you are not sure of their
condition, have your vehicle inspected by your Lexus dealer.
CAUTION
■When the hybrid system is hot
Do not remove the engine/power control unit coolant reservoir caps.(P. 5 3 4 )
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 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 it from damaging parts or paint.
Radiator and condenser
CAUTION
■When the hybrid system is hot
Do not touch the radiator or condenser as they may be hot and cause serious inju-
ries, such as burns.

4746-3. Do-it-yourself maintenance
LS600hL_U(OM50E41U)
Turn the power switch off.
Open the fuse box cover.
Engine compartment (type A fuse box)
Remove the engine compartment
cover ( P. 440) and push the tab
in and lift the lid off.
Engine compartment (type B fuse box)
Remove the engine compartment
cover ( P. 440) and push the tab
in and lift the lid off.
Engine compartment (type C fuse box)
Remove the engine compartment
cover ( P. 440) and push the tab
in and lift the lid off.
Checking and replacing fuses
If any of the electrical components do not operate, a fuse may have
blown. If this happens, check and replace the fuses as necessary.
1
2

4796-3. Do-it-yourself maintenance
6
Maintenance and care
LS600hL_U(OM50E41U)
P. 4 4 0
Adjustment bolt A
Adjustment bolt B
Make sure the vehicle has a full ta nk of gasoline and the area around
the headlight is not deformed.
Park the vehicle on level ground.
Sit in the driver’s seat.
Bounce the vehicle several times.
Headlight aim
Removing the engine compartment cover
Vertical movement adjusting bolts
1
2
Before checking the headlight aim
1
2
3
4

5347-2. Steps to take in an emergency
LS600hL_U(OM50E41U)
CAUTION
■When inspecting under the hood of your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
●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.
●After the hybrid system has been turned off, check that the indicator on the
power switch and the “READY” indicator are off.
When the hybrid system is operating, the gasoline engine may automatically
start, or the cooling fan may suddenly oper ate even if the gasoline engine stops.
Do not touch or approach rotating parts such as the fan, which may lead to fin-
gers or clothing (especially a tie, a scarf or a muffler) getting caught, resulting in
serious injury.
NOTICE
■When adding engine/power control unit coolant
Add coolant slowly after the hybrid syst em has cooled down sufficiently. Adding
cool coolant to a hot hybrid system too quickly can cause da mage 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 any coolant additive.
●Do not loosen the coolant reservoir caps
while the hybrid system and radiator are
hot.
High temperature steam or coolant could
spray out.

5418-1. Specifications
8
Vehicle specifications
LS600hL_U(OM50E41U)
*: The engine oil capacity is a reference quantity to be used when changing the
engine oil. Warm up the engine and turn off the hybrid system, wait more than 5
minutes, and check the oil level on the dipstick.
■Engine oil selection
“Toyota Genuine Motor Oil” is used in your Lexus vehicle. Use Lexus
approved “Toyota Genuine Motor Oil” or equivalent to satisfy the fol-
lowing grade and viscosity.
Oil grade: ILSAC GF-5 multigrade engine oil
Lubrication system
Oil capacity
Drain and refill (Reference
*)
With filter
Without filter
9.5 qt. (9.0 L, 7.9 Imp. qt.)
8.9 qt. (8.4 L, 7.4 Imp. qt.)

5438-1. Specifications
8
Vehicle specifications
LS600hL_U(OM50E41U)
Cooling system
Capacity
Gasoline
engine11.7 qt. (11.1 L, 9.8 Imp. qt.)
Pow e r
control unit2.7 qt. (2.6 L, 2.3 Imp. qt.)
Coolant type
Use either of the following:• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based non-silicate, non-amine, non- nitrite, and non-borate
coolant with long-life hybrid organic acid tech-
nology
Do not use plain water alone.
Ignition system
Spark plug
MakeDENSO FK20HBR11
Gap0.043 in. (1.1 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
Electrical system
12-volt battery
Open voltage at 68 F
(20 C): 12.5 V or higher Fully charged
11.0 
12.4 V Half charged
10.9 V or lower Discharged
(Voltage is checked 20 minutes after the hybrid sys-
tem and all lights are turned off.)
Charging rates5 A max.

601Alphabetical index
LS600hL_U(OM50E41U)
Console box ........................................... 369
Consumption screen ............................. 115
Coolant..................................................... 445Capacity .................................................543
Checking................................................445
Preparing and checking before winter ....................................................325
Cooling system ..................................... 445 Engine overheating.......................... 530
Hybrid system overheating ......... 530
Cruise control Cruise control......................................253
Dynamic radar cruise control with full-speed range .................... 257
Cup holders ............................................ 368
Curtain shield airbags ........................... 43
Customizable features ....................... 564
Daytime running light system .......... 236
Defogger Front windshield .................................. 341
Outside rear view mirrors ............ 358
Rear window ....................................... 358
Differential Front differential ..................................544
Rear differential .................................. 545
Dimensions .............................................538
Dinghy towing..........................................215 Display
Dynamic radar cruise control with full-speed range ................... 257
LKA (Lane-Keeping Assist)..........277
Multi-information display................ 105
Remote Touch screen ....................330
Trip information ................................... 106
Warning message.............................503
Do-it-yourself maintenance............. 433
Door courtesy lights ........................... 360
Door lock Doors.........................................................145
Smart access system with push-button start .............................. 125
Wireless remote control....................141
Door pockets ..........................................367
Doors .......................................................... 145 Automatic door locking and unlocking system .................... 147
Door glasses ......................................... 189
Door lock.................................................145
Open door warning buzzer ......... 130
Open door warning light .............. 496
Outside rear view mirrors ............. 185
Rear door child-protector ..............146
D

603Alphabetical index
LS600hL_U(OM50E41U)
Energy monitor ........................................ 113
EngineACCESSORY mode........................ 217
Compartment......................................439
Engine switch ........................................ 216
Hood ........................................................436
How to start the hy brid system .... 216
Identification number ...................... 539
If the hybrid system will not start......................................... 517
Ignition switch (power switch).................................. 216
Overheating ........................................ 530
Power switch......................................... 216
Engine compartment cover ............. 440
Engine coolant....................................... 445 Capacity .................................................543
Checking................................................445
Preparing and checking before winter ....................................325
Engine coolant temperature gauge ........................................................ 99
Engine oil ................................................. 442 Capacity .................................................. 541
Checking................................................ 442
Preparing and checking before winter ....................................325
Engine switch ...........................................216
EPS (Electric Power Steering) .............. 290 Function ................................................. 290
Warning light .......................................494
EV drive mode......................................... 221
Event data recorder (EDR) .................... 11 First-aid kit storage belt......................375
Flat tire
Vehicles with a spare tire ............. 506
Vehicles with run-flat tires.............. 515
Floor mats....................................................32
Fluid Brake........................................................545
Hybrid transmission ......................... 544
Washer ................................................... 449
Fog lights...................................................243 Replacing light bulbs .........................481
Switch ...................................................... 243
Footwell light .......................................... 360
Front automatic air conditioning system .................................................... 336
Front fog lights........................................243 Replacing light bulbs .........................481
Switch ...................................................... 243
Front passenger occupant classification system ........................... 55
Front seats ................................................. 156 Adjustment..............................................156
Cleaning................................................. 422
Climate control seats ...................... 387
Correct driving posture .................... 34
Driving position memory................. 172
Head restraints ..................................... 179
Power easy access system .............159
Seat position memory ....................... 172
Front side marker lights......................234 Light switch........................................... 234
Replacing light bulbs .........................481
Welcome light illumination control.................................................... 126F