Page 835 of 956
5
When trouble arises
8335-2. Steps to take in an emergency
LX570_OM_OM60L21U_(U) Have the vehicle inspected by your Lexus dealer immediately.
Failure to investigate the cause of th e following warnings may lead to the
system operating abnormally and possibly cause an accident. Have the
vehicle inspected by your Lexus dealer immediately. Wa r n i n g m e s s a g e Details
Indicates a malfunction in the automatic transmission
system
A buzzer also sounds.
Indicates a malfunction in the steering lock system
A buzzer also sounds.
Page 836 of 956
8345-2. Steps to take in an emergency
LX570_OM_OM60L21U_(U) (If equipped) Indicates a malfunction in the pre-collision system
A buzzer also sounds.
(If equipped) Indicates a malfunction in the intuitive parking assist
The site of malfunction is shown flashing on the dis-
play.
Indicates a malfunction in the cruise control system
Press the “ON-OFF” button once to deactivate the
system, and then press the button again to reactivate
the system.
Indicates a malfunction in the dynamic radar cruise
control system (if equipped)
Press the “ON-OFF” button once to deactivate the
system, and then press the button again to reactivate
the system.Wa r n i n g m e s s a g e Details
Page 837 of 956
5
When trouble arises
8355-2. Steps to take in an emergency
LX570_OM_OM60L21U_(U) Indicates a malfunction in the VGRS
A buzzer also sounds.
Indicates a malfunction in the 4-wheel AHC system
A buzzer also sounds.
(If equipped) Indicates a malfunction in the automatic high beam
A buzzer also sounds.Wa r n i n g m e s s a g e Details
Page 838 of 956
8365-2. Steps to take in an emergency
LX570_OM_OM60L21U_(U) Follow the correction procedures.
After taking the specified steps to co rrect the suspected problem, check
that the warning message goes off. Wa r n i n g m e s s a g e Details Correction procedure
Indicates that one or
more of the doors is not
fully closed
The system also indi-
cates which doors are
not fully closed.
If the vehicle reaches a
speed of 3 mph
(5 km/h),
flashes and a buzzer
sounds to indicate that
the door(s) are not yet
fully closed. Make sure that all the
doors are closed.
Page 843 of 956
5
When trouble arises
8415-2. Steps to take in an emergency
LX570_OM_OM60L21U_(U) Wa r n i n g m e s s a g e Details Correction procedure
(If equipped) Indicates that the
dynamic radar cruise
control system is unable
to judge vehicle-to-vehi-
cle distance • Switch driving mode to
either normal or power.
• If the windshield wipers
are on, turn them off or
set them to either inter-
mittent or slow mode.
(Flashes)
(If equipped) Indicates that your vehi-
cle is nearing the vehicle
ahead (in vehicle-to-vehi-
cle distance control
mode)
A buzzer also sounds. Slow the vehicle by apply-
ing the brakes.
Indicates that remaining
fuel is approximately 4.0
gal. (15.0L, 3.3 Imp.gal.)
or less Refuel the vehicle.
Page 865 of 956

5
When trouble arises
8635-2. Steps to take in an emergency
LX570_OM_OM60L21U_(U) If the engine will not start If the engine still does not start afte r following the correct starting proce-
dure ( P. 175) or releasing the steering lock ( P. 177), confirm the fol-
lowing points.
■ The engine will not start even when the starter motor operates
normally
One of the following may be the cause of the problem.
● There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
● The engine may be flooded.
Try to restart the engine once more following correct starting
procedures. ( P. 175)
● There may be a malfunction in the engine immobilizer system.
( P. 117)
■ The starter motor turns over slow ly, the interior lights and head-
lights are dim, or the horn does not sound or sounds at a low vol-
ume
One of the following may be the cause of the problem.
● The battery may be discharged. ( P. 870)
● The battery terminal connections may be loose or corroded.
■ The starter motor does not turn over
The engine starting system may be malfunctioning due to an electri-
cal problem such as an open ci rcuit or a blown fuse. However, an
interim measure is available to start the engine. ( P. 8 6 4 )
Page 866 of 956

8645-2. Steps to take in an emergency
LX570_OM_OM60L21U_(U) Emergency start function
When the engine does no t start, the following s teps can be used as an
interim measure to start the engine if the “ENGINE START STOP” switch
is functioning normally.
Set the parking brake.
Put the shift lever in “P”.
Set the “ENGINE START STOP” switch to the ACCESSORY
mode.
Push and hold the “ENGINE START STOP” switch about 15 sec-
onds while depr essing the brake pedal firmly.
Even if the engine can be started using the above step s, the system may
be malfunctioning. Have the vehicle checked by your Lexus dealer.■ The starter motor does not turn over, the interior lights and head-
lights do not turn on, or the horn does not sound
One of the following may be the cause of the problem.
● One or both of the battery terminals may be disconnected.
● The battery may be discharged. ( P. 870)
● There may be a malfunction in the steering lock system.Contact your Lexus dealer, if the problem cannot be repaired, or if
repair procedures are unknown.
STEP 1
STEP 2
STEP 3
STEP 4
Page 871 of 956
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When trouble arises
8695-2. Steps to take in an emergency
LX570_OM_OM60L21U_(U) ■
Stopping the engine
Shift the shift lever to “P” and press th e “ENGINE START STOP” switch as you nor-
mally do when stopping the engine. ■
Replacing the key battery
As this above procedure is a temporary measure, it is recommended that the elec-
tronic key battery be replaced immediately when the battery depletes. ( P. 7 8 0 )■
Changing “ENGINE START STOP” switch modes
Within 10 seconds of the buzzer sounding, release the brake pedal and press the
“ENGINE START STOP” switch.
The engine does not start and modes will be changed each time the switch is
pressed. ( P. 1 76 )■
Alarm
Using the mechanical key to lock the doors will not set the alarm system.
If a door is unlocked using the mechanical key when the alarm system is set, the
alarm may be triggered. ( P. 1 1 9 )