engine coolant LEXUS LS600H 2015 Owners Manual

1002. Instrument cluster
LS600hL_U(OM50E41U)
Engine coolant temperature gauge
Displays the engine coolant temperature
Hybrid System Indicator
Displays hybrid system output or regeneration level ( P. 1 0 3 )
ECO lamp and SPORT lamp
Changes colors or brightness according to driving mode or way of driving
( P. 1 0 3 )
Speedometer
Displays the vehicle speed
Fuel gauge
Displays the quantity of fuel remaining in the tank
Odometer/trip meter and trip meter reset switches
Multi-information display
Presents the driver with a variety of driving-related data ( P. 105)
Outside Temperature
Displays the outside temperature within the range of -40°F (-40°C) to 122°F
(50°C)
Odometer and trip meter display
Odometer:
Displays the total distance the vehicle has been driven
Tr i p m e t e r :
Displays the distance the vehicle has been driven since the meter was last reset.
Trip meters “A” and “B” can be used to record and display different distances inde-
pendently.
Shift position and shift range
Displays the selected shift position or selected shift range ( P. 2 2 3 )
Instrument panel light control switches
Tachometer
Displays the engine speed in revolutions per minute
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1042. Instrument cluster
LS600hL_U(OM50E41U)
■Tachometer
Hybrid System Indicator switches to the tachometer when driving mode is in sport
mode.
■Engine speed
On hybrid vehicles, engine speed is precis ely controlled in order to help improve
fuel efficiency and reduce exhaust emissions etc.
There are times when the engine speed that is displayed may differ even when vehi-
cle operation and driving conditions are the same.
■Outside temperature display
In the following situations, the correct outside temperature may not be displayed, or
the display may take longer than normal to change.
●When stopped, or driving at low speeds (less than 12 mph [20 km/h])
●When the outside temperature has changed suddenly (at the entrance/exit of a
garage, tunnel, etc.)
■Customization
Settings (e.g. on/off operatio n of ECO lamp) can be changed.
(Customizable features P. 565)
NOTICE
■To prevent damage to the engine and its components
●Do not let the indicator needle of the tachometer enter the red zone, which indi-
cates the maximum engine speed.
●The engine may be overheating if the engine coolant temperature gauge is in the
red zone (H). In this case, immediately stop the vehicle in a safe place, and check
the engine after it has cooled completely. ( P. 5 3 0 )

3254-6. Driving tips
4
Driving
LS600hL_U(OM50E41U)●
Use fluids that are appropriate to the prevailing outside temperatures.
• Engine oil
• Engine/power control unit coolant
• Washer fluid
●Have a service technician inspect th e condition of the 12-volt battery.
●Have the vehicle fitted with four sno w tires or purchase a set of tire
chains for the rear tires.
Ensure that all tires are the specified size and brand, and that chains match the
size of the tires.
Winter driving tips
Carry out the necessary preparati ons and inspections before driving
the vehicle in winter. Always drive the vehicle in a manner appropriate
to the prevailing weather conditions.
Preparation for winter

4286-2. Maintenance
LS600hL_U(OM50E41U)
General maintenance
Listed below are the general maintenance items that should be per-
formed at the intervals specified in the “Warranty and Service Guide”
or “Owner’s Manual Supplement”. It is recommended that any prob-
lem you notice should be brought to the attention of your Lexus dealer
or qualified service shop for advice.
Engine compartment
ItemsCheck points
Brake fluidIs the brake fluid at the correct level? ( P. 448)
Engine/power control unit coolantIs the engine/power control unit coolant
at the correct level? ( P. 445)
Engine oilIs the engine oil at the correct level?
( P. 4 4 2 )
Exhaust systemThere should not be any fumes or
strange sounds.
Radiator/condenserThe radiator and condenser should be
free from foreign objects. ( P. 4 4 7 )
Wa s h e r f l u i dIs there sufficient washer fluid?
( P. 4 4 9 )
Luggage compartment
ItemsCheck points
12-volt batteryCheck the connections. ( P. 4 5 0 )

433
6
Maintenance and care
LS600hL_U(OM50E41U)
6-3. Do-it-yourself maintenance
Do-it-yourself service precautions
If you perform maintenance by yourself, be sure to follow the correct
procedure as given in these sections.
ItemsPa r t s a n d t o o l s
12-volt battery condition (P. 4 5 0 )
•Grease
• Conventional wrench
(for terminal clamp bolts)
Brake fluid level ( P. 448)
• FMVSS No.116 DOT 3 or SAE J1703
brake fluid
•Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine/power control unit
coolant level ( P. 445)
•“To y o t a Super Long Life Coolant” or
a similar high quality ethylene glycol-
based non-silicate, non-amine, non-
nitrite and non-borate coolant with
long-life hybrid organic acid technol-
ogy
For the U.S.A.:
“Toyota Super Long Life Coolant” is
pre-mixed with 50% coolant and
50% deionized water.
For Canada:
“Toyota Super Long Life Coolant” is
pre-mixed with 55% coolant and
45% deionized water.
• Funnel (used only for adding coolant)
Engine oil level ( P. 4 4 2 )
• “Toyota Genuine Motor Oil” or
equivalent
•Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses ( P. 4 74 )• Fuse with same amperage rating as
original
Headlight aim ( P. 4 7 9 )• Phillips-head screwdriver

4346-3. Do-it-yourself maintenance
LS600hL_U(OM50E41U)
Radiator and condenser (P. 4 4 7 )
Tire inflation pressure ( P. 464)• Tire pressure gauge
• Compressed air source
Wa s h e r f l u i d ( P. 4 4 9 )
• Water or washer fluid containing anti-
freeze (for winter use)
• Funnel (used only for adding water or washer fluid)
CAUTION
The engine compartment contains many me chanisms and fluids that may move sud-
denly, become hot, or become electrically energized. To avoid death or serious
injury, observe the following precautions.
■When working on the engine compartment
●Make sure that the indicator on the power switch and the “READY” indicator are
both off.
●Keep hands, clothing and tools away from the moving fan and engine drive belt.
●Be careful not to touch the engine, power control unit, radiator, exhaust manifold,
etc. right after driving as they may be hot. Oil and ot her fluids may also be hot.
●Do not leave anything that may burn easily, such as paper and rags, in the engine
compartment.
●Do not smoke, cause sparks or expose an open flame to fuel. Fuel fumes are flam-
mable.
■When working near the electric cooling fans or radiator grille
Be sure the power switch is off.
With the power switch in ON mode, the electric cooling fans may automatically
start to run if the air conditioning is on and/or the coolant temperature is high.
(  P. 4 4 7 )
■Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from get-
ting in your eyes.
ItemsPa r t s a n d t o o l s

4396-3. Do-it-yourself maintenance
6
Maintenance and care
LS600hL_U(OM50E41U)
■12-volt battery
P. 4 5 0
Engine compartment
Power control unit coolant res-
ervoir ( P. 446)
Engine oil level dipstick (P. 4 4 2 )
Engine oil filler cap ( P. 443)
Brake fluid reservoir (P. 4 4 8 )
Fuse boxes ( P. 4 74 ) Washer fluid tank (
P. 449)
Power control unit coolant radi-
ator ( P. 4 4 7 )
Electric cooling fans
Condenser ( P. 4 4 7 )
Engine coolant radiator (P. 4 4 7 )
Engine coolant reservoir (P. 445)1
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4456-3. Do-it-yourself maintenance
6
Maintenance and care
LS600hL_U(OM50E41U)
■Engine coolant reservoir
The coolant level is satisfactory if it is between the “FULL” and “LOW”
lines on the reservoir when the hybrid system is cold.
Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the
“LOW” line, add coolant up to the
“FULL” line. ( P. 5 3 0 )
Coolant
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4466-3. Do-it-yourself maintenance
LS600hL_U(OM50E41U)
■Power control unit coolant reservoir
The coolant level is satisfactory if it is between the “F” and “L” lines on
the reservoir when the hybrid system is cold.
Reservoir cap
“F” line
“L” line
If the level is on or below the “L”
line, add coolant up to the “F” line.
( P. 5 3 0 )
■Coolant selection
Only use “Toyota Super Long Life Coolant” or a similar high quality ethylene glycol
based non-silicate, non-amine, non-nitrite, and non-borate coolant with long-life
hybrid organic acid technology.
U.S.A.:
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50% deionized
water. (Minimum temperature: -31 F [-35C])
Canada:
“Toyota Super Long Life Coolant” is a mixture of 55% coolant and 45% deionized
water. (Minimum temperature: -44 F [-42C])
For more details about coolant, contact your Lexus dealer.
■If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine/power control unit coolant reservoir caps,
drain cock and water pump.
If you cannot find a leak, have your Lexus dealer test the cap and check for leaks in
the cooling system.
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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.