2015 Lexus ES300h horn

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4-1. Before drivingDriving the vehicle ..................... 188
Cargo and luggage.................... 199
Vehicle load limits ...................... 202
Trailer towing ............................... 203
Dinghy towing ............................. 204
4-2. Driving procedures Engine (ignition) switch (gasoline vehicles) .................. 205
Power (ignition) switch (hybrid vehicles) ........................ 212
EV drive mode (hybrid vehicles) ........................219
Automatic transmission (gasoline vehicles) .................. 222
Hybrid transmission (hybrid vehicles) ...................... 226
Turn signal lever .......................... 230
Parking brake ................................231
Horn ................................................ 232
4-3. Operating the lights and wipers
Headlight switch ........................ 233
Automatic High Beam..............237
Fog light switch ............................244
Windshield wipers and washer .................................245
4-4. Refueling Opening the fuel tank cap ......249 4-5. Using the driving support
systems
Cruise control ............................. 254
Dynamic radar cruise control............................ 258
LDA (Lane Departure Alert).........273
Intuitive parking assist ................281
Lexus parking assist monitor........................................ 294
Driving mode select switch .............................................. 311
Driving assist systems ................313
Hill-start assist control (hybrid vehicles) ........................319
PCS (Pre-Collision System) ...........321
BSM (Blind Spot Monitor)..... 328 •Blind Spot Monitor function .................................... 332
• Rear Cross Traffic Alert function .................................... 335
4-6. Driving tips Hybrid vehicle driving tips (hybrid vehicles) ..................... 338
Winter driving tips .......................341
4Driving

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ES350_300h_OM_OM33B99U_(U)
4Driving
4-1. Before drivingDriving the vehicle ......................188
Cargo and luggage .................... 199
Vehicle load limits ......................202
Trailer towing ................................203
Dinghy towing..............................204
4-2. Driving procedures Engine (ignition) switch (gasoline vehicles) ................. 205
Power (ignition) switch (hybrid vehicles) ....................... 212
EV drive mode (hybrid vehicles) ....................... 219
Automatic transmission (gasoline vehicles) .................. 222
Hybrid transmission (hybrid vehicles) ...................... 226
Turn signal lever ......................... 230
Parking brake ................................ 231
Horn.................................................232
4-3. Operating the lights and wipers
Headlight switch .........................233
Automatic High Beam ............. 237
Fog light switch............................ 244
Windshield wipers and washer ................................. 245 4-4. Refueling
Opening the fuel tank cap ..... 249
4-5. Using the driving support systems
Cruise control ............................. 254
Dynamic radar cruise control ............................258
LDA (Lane Departure Alert) .........273
Intuitive parking assist ............... 281
Lexus parking assist monitor ........................................ 294
Driving mode select switch .............................................. 311
Driving assist systems................ 313
Hill-start assist control (hybrid vehicles) ....................... 319
PCS (Pre-Collision System)........... 321
BSM (Blind Spot Monitor) ..... 328 • Blind Spot Monitor function .................................... 332
• Rear Cross Traffic Alert function .................................... 335
4-6. Driving tips Hybrid vehicle driving tips (hybrid vehicles) .....................338
Winter driving tips ...................... 341

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4-2. Driving procedures
Horn
To sound the horn, press on or close
to the mark.
■After adjusting the steering wheel (manual adjustment type)
Make sure that the steering wheel is securely locked.
The horn may not sound if the steering wheel is not securely locked. (P. 1 6 9 )

ES350_300h_OM_OM33B99U_(U)
2914-5. Using the driving support systems
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Driving
■Intuitive parking assist display
When an obstacle is detected while the rear view monitor system is in use, the warn-
ing indicator will appear in the top right of the screen even if the display setting has
been set to off.
■Sensor detection information
●The sensor’s detection areas are limited to the areas around the vehicle’s front cor-
ners and rear bumper.
●Certain vehicle conditions and the surrou nding environment may affect the ability
of the sensor to correctly detect obstacles. Particular instances where this may
occur are listed below.
• There is dirt, snow or ice on the sensor. (Wiping the sensors will resolve this problem.)
• The sensor is frozen. (Thawing the area will resolve this problem.) In especially cold weather, if a sensor is frozen the screen may show an abnor-
mal display, or obstacle s may not be detected.
• The sensor is covered in any way.
• The vehicle is leaning considerably to one side.
• On an extremely bumpy road, on an incline, on gravel, or on grass.
• The vicinity of the vehicle is noisy due to vehicle horns, motorcycle engines, air brakes of large vehicles, or other loud noises producing ultrasonic waves.
• There is another vehicle equipped with parking assist sensors in the vicinity.
• The sensor is coated with a sheet of spray or heavy rain.
• The vehicle is equipped with a fender pole or wireless antenna.
• Towing eyelets are installed.
• The bumper or sensor receives a strong impact.
• The vehicle is approaching a tall or curved curb.
• In harsh sunlight or intense cold weather.
• The area directly under th e bumpers is not detected.
• If obstacles draw too close to the sensor.
• A non-genuine Lexus suspension (low ered suspension etc.) is installed.
• People may not be detected if they are wearing certain types of clothing.
In addition to the examples above, there are instances in which, because of their
shape, signs and other objects may be judged by the se nsor to be closer than they
are.

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7-3. Do-it-yourself maintenance
FuseAmpereCircuit
1WIP-S5Driver support system, windshield wipers
2FA N50Electric cooling fan
3H-LP CLN30No circuit
4ENG W/PMP*130Cooling system
5PTC HTR NO.250PTC heater
6PTC HTR NO.150PTC heater
7HTR50Air conditioning system
8ALT*2140Charging system
DC/DC*1120Hybrid system
9ABS NO.2*230VSC, ABS
10ST/AM2*230Starting system
ABS NO.1*130VSC, ABS
11H-LP-MAIN30H-LP RH-LO, H-LP LH-LO
12ABS MTR NO.2*150VSC, ABS
13ABS NO.1*250VSC, ABS
ABS MTR NO.1*150VSC, ABS
14R/B NO.2*150IGCT MAIN, INV W/PMP
15EPS80Electric power steering
16S-HORN7. 5S-HORN
17DEICER15Windshield wiper de-icer
18HORN10Horn
19TV15
Multi-information display, audio display,
Remote Touch, audio system, gauges and
meters
20AMP NO.230Audio system
21EFI NO.215
Multiport fuel injection system, sequential
multiport fuel system, electronic controlled
transmission

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8-2. Steps to take in an emergency
If the engine will not start (gasoline vehicles)
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 foll owing correct starting procedures.
( P. 205)
●There may be a malfunction in the engine immobilizer system.
( P. 8 4 )
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( P. 680)
●The 12-volt battery terminal connecti ons may be loose or corroded.
The engine starting system may be malfunctioning due to an electrical
problem such as electronic key ba ttery depletion or a blown fuse. How-
ever, an interim measure is available to start the engine. ( P. 673)
If the engine will not start even though correct starting procedures are
being followed ( P. 205), consider each of the following points:
The engine will not start even though the starter motor operates
normally.
The starter motor turns over slowly, the interior lights and head-
lights are dim, or the horn does not sound or sounds at a low vol-
ume.
The starter motor does not turn over

6738-2. Steps to take in an emergency
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When trouble arises
One of the following may be the cause of the problem:
●One or both of the 12-volt battery terminals may be disconnected.
●The 12-volt battery may be discharged. ( P. 680)
●There may be a malfunction in the steering lock system.
Contact your Lexus dealer if the problem cannot be repaired, or if repair proce-
dures are unknown.
When the engine does not start, the following steps can be used as an
interim measure to start the engine if the “START STOP ENGINE” switch
is functioning normally:
Set the parking brake.
Shift the shift lever to P.
Turn the “START STOP ENGINE” switch to ACCESSORY mode.
Press and hold the “START STOP ENGINE” switch for about 15 sec-
onds while depressing the brake pedal firmly.
Even if the engine can be started using the above steps, the system may be
malfunctioning. Have the vehicle inspected by your Lexus dealer.
The starter motor does not turn ov er, the interior lights and head-
lights do not turn on, or the horn does not sound.
Emergency start function
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8-2. Steps to take in an emergency
If the hybrid system will not start (hybrid vehicles)
One of the following may be the cause of the problem:
●The electronic key may not be functioning properly. (P. 6 7 8 )
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
●There may be a malfunction in the immobilizer system. ( P. 8 6 )
●There may be a malfunction in the steering lock system.
●The hybrid system may be malfunctio ning due to an electrical problem
such as electronic key battery de pletion or a blown fuse. However,
depending on the type of malfuncti on, an interim measure is available
to start the hybrid system. ( P. 675)
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( P. 6 8 4 )
●The 12-volt battery terminal connecti ons may be loose or corroded.
Reasons for the hybrid system not st arting vary depending on the situa-
tion. Check the following and perf orm the appropriate procedure:
The hybrid system will not start even though the correct starting
procedure is being followed. ( P. 2 1 2 )
The interior lights and headlights are dim, or the horn does not
sound or sounds at a low volume.