alarm LEXUS LS500H 2020 User Guide

4397-2. Steps to take in an emergency
7
When trouble arises
If you have a set of jumper (or booster)
cables and a second vehicle with a
12-volt battery, you can jump start your
vehicle by following the steps below.
Method connecting jumper (or
booster) cables to the battery
1 Confirm that the electronic key is
being carried.
When connecting the jumper (or booster)
cables, depending on the situation, the
alarm may activate and doors locked.
( P.66)
2 Open the trunk lid and remove the
luggage mat. ( P.343)
In the event that the trunk opener cannot
be used, use the mechanical key to open
the trunk. (P.437)
3 Connect a positive jumper cable clamp to on your vehicle and connect the
clamp on the other end of the positive cab le to on the second vehicle. Then,
connect a negative cable clamp to on the second vehicle and connect the
clamp at the other end of the negative cable to .
Positive (+) battery terminal (your vehicle)
Positive (+) battery terminal (second vehicle)
Negative (-) battery terminal (second vehicle)
Negative (-) battery terminal (your vehicle)
If the vehicle battery is dis-
charged
The following procedures may be
used to start the engine if the vehi-
cle’s battery is discharged.
You can also call your Lexus dealer
or a qualified repair shop.
Restarting the engine
A
B
C
D
A
B
C
D

4407-2. Steps to take in an emergency
4Start the engine of the second vehi-
cle. Increase the engine speed
slightly and maintain at that level for
approximately 5 minutes to
recharge the battery of your vehi-
cle.
5 Open and close any of the doors of
your vehicle with the engine switch
off.
6 Maintain the engine speed of the
second vehicle and start the engine
of your vehicle by turning the
engine switch to IGNITION ON
mode.
7 Once the vehicle’s engine has
started, remove the jumper cables
in the exact reverse order from
which they were connected.
Method connecting jumper (or
booster) cables to the exclusive
jump starting terminal
1 Confirm that the electronic key is
being carried.
When connecting the jumper (or booster)
cables, depending on the situation, the
alarm may activate and doors locked. (
 P.66)
2 Open the hood. Remove the ser-
vice cover. ( P.375, 379)
3 Open the fuse box cover.
Push the tab in and lift the lid off.
4Open the exclusive jump starting
terminal cover.
5 Remove the engine cover.
(P.378)
6 Connect a positive jumper cable clamp to on your vehicle and connect the
clamp on the other end of the positive cab le to on the second vehicle. Then,
A
B

497What to do if... (Troubleshooting)
In this case, the engine can be started in a
temporary way. (P.438)
Is the battery discharged?
( P.439)
 It is locked automatically to prevent
theft of the vehicle. ( P.165)
 Is the window lock switch pressed?
The power window except for the one at
the driver’s seat cannot be operated if the
window lock switch is pressed. ( P.145)
 The auto power off function will be
operated if the vehicle is left in
ACCESSORY mode for a period of
time. ( P.168)
 The seat belt reminder light is flash-
ing
Are the driver and the front passenger
wearing the seat belts? ( P.422)
 The parking brake indicator is on
Is the parking brake released? ( P.176)
Depending on the situation, other
types of warning buzzer may also sound. (
P.419, 429)
 Did anyone inside the vehicle open
a door during setting the alarm?
The sensor detects it and the alarm sounds.
( P.65)
Do one of the following to deactivate
or stop the alarms:
 Unlock the doors.
 Turn the engine switch to ACCES-
SORY or IGNITION ON mode, or
start the engine. (The alarm will be
deactivated or stopped after a few
seconds.)
 Is the message displayed on the
multi-information display?
Check the message on the multi-informa-
tion display. ( P.429)
 When a warning light turns on or a
warning message is displayed, refer
to P.419, 429.
The steering wheel cannot be
turned after the engine is
stopped
The windows do not open or
close by operating the power
window switches
The engine switch is turned off
automatically
A warning buzzer sounds during
driving
An alarm is activated and the
horn sounds
A warning buzzer sounds when
leaving the vehicle
A warning light turns on or a
warning message is displayed
When a problem has occurred
If you have a flat tire

499Alphabetical Index
Alphabetical Index
A
A/CAir conditioning filter ............................... 402
Front automatic air conditioning system........................................................................... 317
Front seat concentr ated airflow mode
(S-FLOW)................................................. 324
Micro dust and pollen filter................... 323
Rear automatic air conditioning system ......................................................................... 327
ABS (Anti-lock Brake System).............. 297 Warning light ................................................. 421
Active stabilizer suspension system .... 298
Adaptive Front-lighting System (AFS) .182
Adaptive Variable Suspension System298
AFS (Adaptive Front-lighting System) .182
AHB (Automatic High Beam) ................ 183
Air conditioning filter ................................. 402
Air conditioning system Air conditioning filter ............................... 402
Front automatic air conditioning system........................................................................... 317
Front seat concentr ated airflow mode
(S-FLOW)................................................. 324
Micro dust and pollen filter................... 323
Rear automatic air conditioning system ......................................................................... 327
Airbags Airbag operating conditions..................... 31
Airbag precautions for your child ........ 34
Correct driving posture .............................23
Curtain shield airbag operating condi- tions ...................................................................32
Curtain shield airbag precautions ....... 34
Front passenger occupant classification system ............................................................. 39
General airbag precautions ................... 34
Locations of airbags.................................... 29
Modification and disposal of airbags . 36
Side airbag operating conditions ..........32
Side airbag precautions ............................ 34 Side and curtain shie
ld airbags operating
conditions ...................................................... 32
Side and curtain shield airbags precau- tions .................................................................. 34
SRS airbags...................................................... 29
SRS warning light.......................................420
Alarm ................................................................... 65 Warning buzzer .......................................... 419
Anchor brackets ..................................... 46, 55
Antennas (smart acc ess system with
push-button start)..........................................111
Anti-lock Brake System (ABS).............. 297 Warning light .................................................421
Approach warning.......................................247
Armrest............................................................ 347
Assist grips ..................................................... 347
Audio system-linked display ...................... 85
Automatic headlight leveling system ..... 181
Automatic High Beam ............................... 183
Automatic light control system............... 180
Automatic transmission ..............................169 M mode ............................................................174
Paddle shift switches ........................173, 174
Snow mode..................................................... 172
Auxiliary boxes .................................. 342, 344
Average fuel economy................................. 82
Average vehicle speed ................................ 82
B
Back-up lights Replacing light bulbs ............................... 408
Battery Battery checking ....................................... 385
If the battery is discharged ....................439
Preparing and checking before winter......................................................................... 303
Warning light ...............................................420
Blind Spot Monitor (BSM).........................251
Boost gauge...................................................... 84
Brake Brake hold ...................................................... 178
Fluid...................................................... 383, 455

509Alphabetical Index
Driving mode select switch .................. 292
Driving position memory switches .... 130
Dynamic radar cruise control with full-speed range switch ......................... 241
Electronic roof sunshade switches .... 148
Emergency flashers switch .................... 410
Engine switch................................................ 165
Garage door opener switches .......... 354
Heated steering wheel switch.............330
HUD (Head-up display) switch............ 89
Ignition switch............................................... 165
Instrument panel light control switches ....................................................................75, 79
Intuitive parking assist switch...............260
Light switches ............................................... 180
LTA (Lane Tracing As sist) switch..... 232
Meter control switches ................................81
Moon roof switches ...................................146
“ODO TRIP” switch ............................ 74, 79
Outside rear view mirror switches .......141
Paddle shift switches ........................ 173, 174
Panoramic moon roof switches .......... 148
Parking brake switch ................................. 176
PCS OFF switch ............................. 208, 218
PKSB (Parking Support Brake) switch ......................................................................... 274
Power door lock switch ...........................102
Power window switches ..........................143
RCD (Rear Camera Detection) switch ......................................................................... 270
RCTA switch................................................ 266
Rear door sunshade switch................. 350
Rear seat heater ......................................... 328
Rear seat position memory switches. 134
Rear seat ventilator ................................... 328
Rear sunshades switch ........................... 352
Rear window and outside rear view mir- ror defoggers switch .............................. 317
Seat heater switches ................................330
Seat ventilator switches ..........................330
Snow mode switch ..................................... 172
“SOS” button .................................................. 58 Tilt and telescopic steering control switch
........................................................................... 139
Tire pressure warning reset switch...392
Trunk closer switch ....................................108
Trunk opener main switch........................ 110
Trunk opener switch ................................. 106
Vehicle-to-vehicle distance switch.....241
VSC OFF switch .......................................299
Window lock switch.................................. 145
Windshield wiper and washer switch185
Windshield wiper de-icer switch....... 322
T
Tachometer................................................73, 76 Rev indicator ................................................... 78
Rev peak............................................................ 78
Tail lights Light switch ....................................................180
Replacing light bulbs ............................... 408
Theft deterrent system Alarm...................................................................65
Engine immobilizer system...................... 63
Tire inflation pressure Maintenance data ..................................... 456
Tire inflation pressure display function......................................................................... 389
Warning light ............................................... 423
Tire information ..............................................461 Glossary .........................................................464
Size .................................................................... 462
Tire identification number...................... 462
Uniform Tire Quality Grading ............463
Tire pressure display ... ............................... 389
Tire pressure warning system Function ......................................................... 389
Initializing........................................................392
Installing tire pres sure warning valves
and transmitters........................................ 391
Registering ID codes ...............................393
Warning light ............................................... 423
Tires Chains ............................................................ 304