2017 LEXUS LS600H warning

545
7When trouble arises
LS600h/LS600hL_EE(OM50G20E)
7-1. Essential information
Emergency flashers ..................546
If your vehicle has
to be stopped
in an emergency ...................... 547
7-2. Steps to take
in an emergency
If your vehicle needs
to be towed ............................... 548
If you think something
is wrong .......................................554
If a warning light turns
on or a warning buzzer
sounds......................................... 555
If a warning message
is displayed.................................563
If you have a flat tire
(vehicles with
a spare tire)................................ 567
If you have a flat tire
(vehicles without
a spare tire)................................ 578
If the hybrid system
will not start................................ 597
If the parking brake
cannot be released................. 599
If the electronic key does
not operate properly .............603
If the 12-volt battery
is discharged............................. 607
If your vehicle overheats ............ 611
If the vehicle becomes
stuck ...............................................616

548
LS600h/LS600hL_EE(OM50G20E)
7-2. Steps to take in an emergency
The following may indicate a problem with your transmission. Contact any
authorized Lexus dealer or repairer, or another duly qualified and
equipped professional 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 recommen d having your vehicle towed by any
authorized Lexus dealer or repairer, or another duly qualified and
equipped professional or commercial towing service, using a wheel-lift
type truck or flatbed truck.
Use a safety chain system for all to wing, and abide by all state/provin-
cial and local laws.
Situations when it is necessary to contact dealers before towing

5557-2. Steps to take in an emergency
7
When trouble arises
LS600h/LS600hL_EE(OM50G20E)
The following warning indicates a possible problem in the brake system.
Immediately stop the vehicle in a safe place and contact any authorized
Lexus dealer or repairer, or another duly qualified and equipped profes-
sional.
If a warning light turns on or a warning buzzer
sounds
Calmly perform the following actions if any of the warning lights comes
on or flashes. If a light comes on or flashes, but then goes off, this does
not necessarily indicate a malfunction in the system. However, if this
continues to occur, have the vehicl e inspected by any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional.
Stop the vehicle immediately. Cont inuing to drive the vehicle may
be dangerous.
Warning lightWarning light/Details
Brake system warning light (warning buzzer) • Low brake fluid
• Malfunction in the electronically controlled brake system

5567-2. Steps to take in an emergency
LS600h/LS600hL_EE(OM50G20E)
The following warning indicates the possibility of damage to the vehicle
that may lead to an accident. Immediately stop the vehicle in a safe place
and contact any authorized Lexus dealer or repairer, or another duly qual-
ified and equipped professional.
Failure to investigate the cause of the following warnings may lead to the
system operating abnormally and possibly cause an accident. Have the
vehicle inspected by any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional immediately.
Stop the vehicle immediately.
Warning lightWarning light/Details
Charging system warning light
Indicates a malfunction in the vehicle’s charging system
Have the vehicle inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional
immediately.
Warning lightWarning light/Details
Malfunction indicator lamp
Indicates a malfunction in:
•The hybrid system;
• The emission control system (on some models);
• The electronic engine control system;
• The electronic throttle control system; or
• The electronic hybrid transmission control system
SRS warning light
Indicates a malfunction in:
• The SRS airbag system;
• The seat belt pretensioner system; or
• The active head restraints system (if equipped)
ABS warning light
Indicates a malfunction in:
•The ABS; or
• The brake assist system

5577-2. Steps to take in an emergency
7
When trouble arises
LS600h/LS600hL_EE(OM50G20E)
Electric power steering system warning light (warning buzzer)
Indicates a malfunction in the EPS (Electric Power Steering)
system
(Flashes)
(If equipped)
Pre-crash safety system warning light
Indicates a malfunction in the pre-crash safety system
The warning light will operate as follows, even when the system
is not malfunctioning:
• The light will flash quickly when the system is operating.
( P. 346)
• The light will turn on when the pre-crash braking is disabled.
( P. 341, 348)
• The light will turn on when the system cannot temporarily be
used.
Slip indicator
Indicates a malfunction in:
•The VSC system;
•The TRC system;
•The ABS; or
• The hill-start assist control system
The light will flash when the VS C, the TRC, the ABS or the hill-
start assist control system is operating. ( P. 340)
(Flashes)
Brake hold operated indicator
Indicates a malfunction in the brake hold system
(Flashes)
Parking brake indicator
Indicates a malfunction in the electric parking brake
Brake system warning light
Indicates a malfunction in:
• The electronically controlled brake system;
• The regenerative braking system; or
• The electric parking brake
Warning lightWarning light/Details

5587-2. Steps to take in an emergency
LS600h/LS600hL_EE(OM50G20E)
After taking the specified steps to correct the suspected problem, check
that the warning light goes off.
Follow the correction procedures.
Warning lightWarning light/DetailsCorrection procedure
Open door warning light
(warning buzzer)*1
Indicates that a door or the
trunk is not fully closed
Check that all the doors and
the trunk are closed.
In the fuel
gauge
Low fuel level warning light
Indicates remaining fuel is
approximately 13 L (3.4 gal.,
2.8 Imp. gal.) or less
Refuel the vehicle.
Seat belt reminder light (warn-
ing buzzer)*2
Warns the driver and/or front
passenger to fasten their seat
belts
Fasten the seat belt.
If the front passenger’s seat is
occupied, the front passen-
ger’s seat belt also needs to
be fastened to make the
warning light (warning
buzzer) turn off.
Master warning light
A buzzer sounds and the
warning light comes on and
flashes to indicate that the
master warning system has
detected a malfunction.
 P. 563

5597-2. Steps to take in an emergency
7
When trouble arises
LS600h/LS600hL_EE(OM50G20E)
*1: Open door warning buzzer:
The open door warning buzzer sounds to alert one or more of the doors is not
fully closed (with the vehicle having reached a speed of 5 km/h [3 mph]).
*2: Driver’s and front passenger’s seat belt buzzer:
The driver’s and front passenger’s seat belt buzzer sounds to alert the driver and
front passenger that his or her seat belt is not fastened. The buzzer sounds inter-
mittently for 30 seconds after the vehicle reaches a speed of 20 km/h (12 mph).
Then, if the seat belt is still unfastened, the buzzer will sound in a different tone for
90 more seconds.
Tire pressure warning light
When the light comes on:
Low tire inflation pressure
such as
• Natural causes ( P. 560)
• Flat tire ( P. 567, 578)
Adjust the tire inflation pressure
(including the spare tire) to the
specified level.
The light will turn off after a
few minutes. In case the light
does not turn off even if the
tire inflation pressure is
adjusted, have the system
checked by any authorized
Lexus dealer or repairer, or
another duly qualified and
equipped professional.
When the light comes on
after blinking for 1 minute:
Malfunction in the tire pres-
sure warning system
( P. 561)
Have the system checked by
any authorized Lexus dealer or
repairer, or another duly quali-
fied and equipped professional.
Warning lightWarning light/DetailsCorrection procedure

5607-2. Steps to take in an emergency
LS600h/LS600hL_EE(OM50G20E)
■Front passenger detection sensor, seat belt reminder and warning buzzer
●If luggage is placed on the front passenger seat, the front passenger detection sen-
sor may cause the warning light to flash and the warning buzzer to sound even if a
passenger is not sitting in the seat.
●If a cushion is placed on the seat, the sensor may not detect a passenger, and the
warning light may not operate properly.
■Electric power steering system warning light (warning buzzer)
When the 12-volt battery charge becomes insufficient of the voltage temporarily
drops, the electric power steering system warning light may come on and the warn-
ing buzzer may sound.
■If the malfunction indicator lamp comes on while driving
The malfunction indicator lamp will come on if the fuel tank becomes completely
empty. If the fuel tank is empty, refuel the vehicle immediately. The malfunction indi-
cator lamp will go off after several trips.
If the malfunction indicator lamp does not go off, contact any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional as soon as
possible.
■When the tire pressure warning light comes on
Carry out the following procedure after the tire temperature has lowered sufficiently.
●Check the tire inflation pressure and adjust it to the appropriate level.
●If the warning light does not go out after several minutes, check that the tire infla-
tion pressure is at the specified level and carry out initialization.
The warning light may come on again if the above operations are conducted without
first allowing the tire temperature to lower sufficiently.
■The tire pressure warning light may come on due to natural causes
The tire pressure warning light may come on due to natural causes such as natural
air leaks and tire inflation pressure changes caused by temperature. In this case,
adjusting the tire inflation pressure will turn off the warning light (after a few minutes).