2015 LEXUS LS600H display

4596-3. Do-it-yourself maintenance
6
Maintenance and care
LS600hL_U(OM50E41U)
■If the tread on snow tires wears down below 0.16 in. (4 mm)
The effectiveness of the tires as snow tires is lost.
■Situations in which the tire pressure warning system may not operate properly
●In the following cases, the tire pressure warning system may not operate properly.
• If non-genuine Lexus wheels are used.
• A tire has been replaced with a tire that is not an OE (Original Equipment) tire.
• A tire has been replaced with a tire that is not of the specified size.
• Tire chains etc. are equipped.
• Lock nuts are equipped.
• An auxiliary-supported run- flat tire is equipped.
• If a window tint that affects the radio wave signals is installed.
• If there is a lot of snow or ice on the vehicle, particularly around the wheels or wheel housings.
• If the tire inflation pressure is extremely higher than the specified level.
• If the spare tire is in a location subject to poor radio wave signal reception.
*
• If a large metallic object which can interfere with signal reception is put in the trunk.
*
• If tires not equipped with tire pressure warning valves and transmitters are used.
• If the ID code on the tire pressure warn ing valves and transmitters is not regis-
tered in the tire pressure warning computer.
*: Vehicles with a spare tire
●Performance may be affected in the following situations.
• Near a TV tower, electric power plant, gas station, radio station, large display,
airport or other facility that generates strong radio waves or electrical noise
• When carrying a portable radio, cellular phone, cordless phone or other wire- less communication device
If tire position information is not correc tly displayed due to the radio wave condi-
tions, the display may be corrected by driving and changing the radio wave condi-
tions.
●When the vehicle is parked, the time taken for the warning to start or go off could
be extended.
●When tire inflation pressure declines rapi dly for example when a tire has burst, the
warning may not function.

4716-3. Do-it-yourself maintenance
6
Maintenance and care
LS600hL_U(OM50E41U)
■Checking interval
Front air conditioning filter
Inspect and replace the air conditioning fil ter when a message is appeared on the
multi-information display. In dusty areas or areas with heavy traffic flow, early
replacement may be required. (For sche duled maintenance information, please
refer to the “Owner’s Manual Supplement” or “Scheduled Maintenance”.)
Rear air conditioning filter
Replace every 9000 miles (15000 km).
■If air flow from the vents decreases dramatically
The filter may be clogged. Check the filter and replace if necessary.
■After changing the front air conditioning filter
The front air conditioning filter maintenanc e data should be reset. Perform the fol-
lowing procedures:
Turn the power switch to ON mode.
Press and hold (on the air conditioning panel) for 4 seconds or more.
A buzzer will sound to indicate that the maintenance data has been successfully
reset.
■Rear air conditioning filter
If it is necessary to clean or replace the filter, contact your Lexus dealer.
■Climate control seat filter
Filters are installed in the seats. When it is necessary to clean or replace the filters,
contact your Lexus dealer.
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NOTICE
■When using the air conditioning system
Make sure that a filter is always installed.
Using the air conditioning system without a filter may cause damage to the system.

483
When trouble arises7
LS600hL_U(OM50E41U)7-1. Essential information
Emergency flas hers.................. 484
If your vehicle has to be stopped in an
emergency ................................ 485 7-2. Steps to take in an
emergency
If your vehicle needs to be towed ...........................................486
If you think something is wrong ........................................... 492
If a warning light turns on or a warning buzzer
sounds.......................................... 493
If a warning message is displayed.....................................503
If you have a flat tire (vehicles with
a spare tire)................................506
If you have a flat tire (vehicles with
run-flat tires)............................... 515
If the hybrid system will not start .........................................517
If the shift lever cannot be shifted from P............................. 519
If the parking brake cannot be released................. 520
If the electronic key does not operate properly ............. 524
If the 12-volt battery is discharged ................................. 527
If your vehicle overheats .........530
If the vehicle becomes stuck ............................................. 535

486
LS600hL_U(OM50E41U)
7-2. Steps to take in an emergency
The following may indicate a problem with your transmission. Contact
your Lexus dealer or commercial towing service before towing.
●A warning message for the hybrid system is shown on the multi-infor-
mation display and the vehicle does not move.
●The vehicle makes an abnormal sound.
If your vehicle needs to be towed
If towing is necessary, we recommend having your vehicle towed by
your Lexus dealer or commercial towing service, using a lift-type truck
or flatbed truck.
Use a safety chain system for all towing, and abide by all state/provin-
cial and local laws.
Situations needs to contact dealers before towing

5037-2. Steps to take in an emergency
7
When trouble arises
LS600hL_U(OM50E41U)
Master warning light
The master warning light also comes
on or flashes in order to indicate that a
message is currently being displayed
on the multi-information display.
Multi-information display
If any of the warning messages is shown again after the following actions
have been performed, contact your Lexus dealer.
If a warning message is displayed
The multi-information display shows warnings for system malfunctions,
incorrectly performed operations, and messages that indicate a need
for maintenance. When a message is shown, perform the correction
procedure appropriate to the message.
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5047-2. Steps to take in an emergency
LS600hL_U(OM50E41U)
The warning lights and warning buzzers operate as follows depending on
the content of the message. If a message indicates the need for inspection
by a dealer, have the vehicle inspected by your Lexus dealer immediately.
*: A buzzer sounds the first time a message is shown on the multi-information display.
■Warning message in radar cruise mode (if equipped)
In the following cases, the warning message may not be displayed even if vehicle-to-
vehicle distance decreases:
●When your vehicle and the vehicle ahead are traveling at the same speed or the
vehicle ahead is traveling more quickly than your vehicle
●When the vehicle ahead is traveling at a very low speed
●Immediately after cruise control speed is set
●At the instant the accelerator pedal is depressed
Messages and warnings
System warn- ing lightWa r n i n g buzzer
*Wa r n i n g
Remains onSounds
Indicates an important situation
such as the malfunction of the
system related to driving that
may result in danger
Remains on or flashesSounds
Indicates an important situation
such as the malfunction of the
system shown on the multi-infor-
mation display
FlashesSounds
Indicates a situation such as
damage to the vehicle that may
result in danger
Remains onDoes not sound
Indicates a condition such as a
malfunction of electrical compo-
nents and the need for mainte-
nance
FlashesDoes not sound
Indicates a situation such as the
incorrect performance of an
operation and how to perform
the operation correctly

5057-2. Steps to take in an emergency
7
When trouble arises
LS600hL_U(OM50E41U)
■The LKA (Lane-Keeping Assist) lane departure warning function (if equipped)
In the following cases, the warning message will not be displayed even if a lane line is
crossed.
●When the vehicle speed deviates from the operating range of the LKA system
functions
●When the lane lines cannot be recognized
●When the steering wheel is turned as far as necessary to cause the vehicle to
change lanes
■System warning lights
The master warning light does not come on or flash in the following cases. Instead, a
separate system warning light will come on or flash along with the message shown
on the multi-information display.
●Malfunction of the brake system
The brake system warning light (red indicator) comes on. ( P. 4 9 3 )
●Malfunction of the regenerative brake syst em, electronically controlled brake sys-
tem or electric parking brake
The brake system warning light (yellow indicator) comes on. ( P. 495)
●Malfunction of the ABS
The ABS warning light comes on. ( P. 4 9 4 )
●Malfunction of the charging system
The charging system warning light comes on. ( P. 4 9 4 )
●Indicates that a door or the trunk is not fully closed
The open door warnin g light comes on. (P. 4 9 6 )
●High engine coolant temperature
The needle of the engine coolant temperature gauge enters the red zone.
( P. 5 3 0 )
■If “Maintenance required ” is shown (U.S.A. only)
Perform the necessary maintenance.
Please reset the message after the maintenance is performed. ( P. 4 2 6 )
■If “Hybrid System Overheat” is shown
Coping method: P. 5 3 0
This message may be displayed when driv ing under severe operating conditions.
(For example, when driving up a long steep hill.)
■Warning buzzer
In some cases, the buzzer may not be hear d due to ambient noise or sounds from the
audio system.

5307-2. Steps to take in an emergency
LS600hL_U(OM50E41U)●
The needle of the engine
coolant temperature gauge ( P. 99) enters
the red zone or a loss of hybrid system power is experienced. (For
example, the vehicle speed does not increase.)
●“Hybrid System Overheat” is shown on the multi-information display.
●Steam comes out from under the hood.
■If the needle of the engine coolant temperature gauge enters the red
zone
Stop the vehicle in a safe place an d turn off the air conditioning sys-
tem, and then stop the hybrid system.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the hybrid system 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 your
Lexus dealer.
If your vehicle overheats
The following may indicate that your vehicle is overheating.
Correction procedures
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