2020 LEXUS RC300 headlights

3037-2. Steps to take in an emergency
7
When trouble arises
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 again fol-
lowing correct starting procedures.
( P.125)
 There may be a malfunction in the
engine immobilizer system.
( P.56)
One of the following may be the cause
of the problem:
 The battery may be discharged.
( P.308)
 The battery terminal connections
may be loose or corroded.
( P.255)
NOTICE
■Driving with tire chains and the spare
tire
Do not fit tire chains to the spare tire.
Tire chains may damage the vehicle body
and adversely affect driving perfor-
mance.
■When replacing the tires
When removing or fitting the wheels,
tires or the tire pressure warning valve
and transmitter, contact your Lexus
dealer as the tire pr essure warning valve
and transmitter may be damaged if not
handled correctly.
If the engine will not start
If the engine will not start even
though correct starting procedures
are being followed ( P.125), con-
sider each of the following points:
The engine will not start even
though the starter motor oper-
ates normally.
The starter motor turns over
slowly, the interior lights and
headlights are dim, or the horn
does not sound or sounds at a low
volume.

3107-2. Steps to take in an emergency
5Open and close any of the door 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.
Once the engine starts, have the vehi-
cle inspected at your Lexus dealer as
soon as possible.
■Starting the engine when the battery is
discharged
The engine cannot be started by push-start-
ing.
■To prevent battery discharge
●Turn off the headlights and the audio sys-
tem while the engine is off.
●Turn off any unnecessary electrical com-
ponents when the vehicle is running at a
low speed for an extended period, such
as in heavy traffic.
■Charging the battery
The electricity stored in the battery will dis-
charge gradually even when the vehicle is
not in use, due to natural discharge and the
draining effects of certain electrical appli-
ances. If the vehicle is left for a long time,
the battery may discharge, and the engine
may be unable to start. (The battery
recharges automatically during driving.)
■When recharging or replacing the bat-
tery
●In some cases, it may not be possible to
unlock the doors using the smart access
system with push-button start when the
battery is discharged. Use the wireless
remote control or the mechanical key to
lock or unlock the doors.
●The engine may not start on the first
attempt after the battery has recharged
but will start normally after the second
attempt. This is not a malfunction.
●The engine switch mode is memorized by
the vehicle. When the battery is recon-
nected, the system will return to the
mode it was in before the battery was dis-
charged. Before disconnecting the bat-
tery, turn the engine switch off.
If you are unsure wh at mode the engine
switch was in before the battery dis-
charged, be especially careful when
reconnecting the battery.
WARNING
■Avoiding battery fires or explosions
Observe the following precautions to
prevent accidentally igniting the flamma-
ble gas that may be emitted from the bat-
tery:
●Make sure each jumper cable is con-
nected to the correct terminal and that
it is not unintentiona lly in contact with
any other than the intended terminal.
●Do not allow the other end of the
jumper cable connected to the “+” ter-
minal to come into contact with any
other parts or metal surfaces in the
area, such as brackets or unpainted
metal.
●Do not allow the + and - clamps of the
jumper cables to come into contact
with each other.
●Do not smoke, use matches, cigarette
lighters or allow open flame near the
battery.
■Battery precautions
The battery contains poisonous and cor-
rosive acidic electrol yte, while related
parts contain lead and lead compounds.
Observe the following precautions when
handling the battery:

379Alphabetical Index
G-force................................................................72
Glove box .........................................................219
Glove box light ............................................. 220
H
Head restraints .............................................. 103
Headlight aim .................................................. 271
HeadlightsAutomatic High Beam system..............139
Light switch ..................................................... 137
Replacing light bulbs.................................272
Wattage.......................................................... 328
Heated steering wheel ................................ 214
Heaters Automatic air conditioning system ... 207
Heated steering wheel.............................. 214
Outside rear view mirrors ........................211
Seat heaters .................................................... 214
High mounted stoplight Replacing light bulbs.................................272
Hill-start assist control .................................194
Hood Open ............................................................... 247
Hooks Cargo hooks.................................................. 221
Coat hooks ....................................................222
Retaining hooks (floor mat)......................22
Horn ....................................................................107
I
I/M test ............................................................ 244
Identification Engine ...............................................................319
Vehicle ............................................................. 318
Ignition switch (engine switch).................125 Auto power off function ...........................128
Changing the engine switch modes.. 127
If your vehicle has to be stopped in an
emergency ................................................ 276
Illuminated entry system .............................218
Indicators ........................................................... 62 Initialization
Items to initialize .......................................... 351
Maintenance.....................................240, 252
Power windows ............................................. 110
Tire pressure warning system ............. 262
Inside rear view mirror ................................107
Instrument panel light control ................... 69
Intercooler...................................................... 254
Intercooler coolant Capacity ...........................................................321
Checking ....................................................... 252
Interior lights.................................................... 217 Front interior light ........................................ 217
Rear interior light.......................................... 217
Intuitive parking assist Warning message ...................................... 180
J
JackPositioning a floor jack ............................ 247
Vehicle-equipped jack ...........................296
Jack handle .................................................... 296
Jam protection function Moon roof ........................................................ 113
Power windows ............................................. 110
K
Keyless entrySmart access system with push-button start ................................................................... 93
Wireless remote control ...........................84
Keys Battery-saving function.............................. 94
Electronic key ................................................. 82
Engine switch ................................................ 125
If the electronic key does not operate properly ...................................................... 306
If you lose your keys ................................ 305
Key number plate ......................................... 82
Keyless entry ..........................................86, 93
Mechanical key .............................................. 82