2015 LEXUS RC350 horn

1653-4. Adjusting the steering wheel and mirrors
3
Operation of each component
RC350/RCF_U (OM24636U)
When the engine switch is turned off,
the steering wheel returns to its stowed
position by moving up and away to
enable easier driver entry and exit.
Turning the engine switch to ACCES-
SORY or IGNITION ON mode will
return the steering wheel to the original
position.
To sound the horn, press on or close to
the mark.
■The steering wheel can be adjusted when (power type)
The engine switch is in ACCESSORY or IGNITION ON mode.
■Automatic adjustment of the steering position (if equipped)
A desired steering position can be entered to memory and recalled automatically by the
driving position memory system. (P. 1 5 7 )
■Customization
The auto tilt away function can be changed. (Customizable features: P. 6 3 5 )
Auto tilt away (power type)
Horn
WA R N I N G
■Caution while driving
Do not adjust the steering wheel while driving.
Doing so may cause the driver to mishandle the vehicle and cause an accident, result-
ing in death or serious injury.
■After adjusting the steering wheel (manual type)
Make sure that the steering wheel is securely locked.
Otherwise, the steering wheel may move suddenly, possibly causing an accident, and
resulting in death or serious injury. Also, the horn may not sound if the steering wheel is
not securely locked.

2614-5. Using the driving support systems
4
Driving
RC350/RCF_U (OM24636U)
■Sensor detection information
●RC350: The sensor’s detection areas are limited to the areas around the vehicle’s front
and rear bumpers.
●RC F: The sensor’s detection areas are limited to the areas around the vehicle’s front
corner and rear bumpers.
●Certain vehicle conditions and the surround ing 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 prob-
lem.)
• The sensor is frozen. (Thawing th e area will resolve this problem.)
In especially cold weather, if a sensor is frozen the screen may show an abnormal
display, or obstacles may not be detected.
• The sensor is covered in any way.
• The vehicle is leaning co nsiderably 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 sensor 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 the 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 sensor to be closer than they are.
●The shape of the obstacle may prevent the sensor from detecting it. Pay particular
attention to the following obstacles:
• Wires, fences, ropes, etc.
• Cotton, snow and other materials that absorb sound waves
• Sharply-angled objects
•Low obstacles
• Tall obstacles with upper sections projecting outwards in the direction of your vehi-
cle
●The following situations may occur during use.
• Depending on the shape of the obstacle and other factors, the detection distance
may shorten, or detect ion may be impossible.
• Obstacles may not be detected if they are too close to the sensor.
• There will be a short delay between obst acle detection and display. Even at slow
speeds, there is a possibility that the obstacle will come within the sensor’s detection
areas before the display is shown and the warning beep sounds.
• Thin posts or objects lower than the sensor may not be detected when approached, even if they have been detected once.
• It might be difficult to hear beeps due to the volume of the audio system or air flow noise of the air conditioning system.

5878-2. Steps to take in an emergency
8
When trouble arises
RC350/RCF_U (OM24636U)
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 following correct starting procedures.
(P. 1 9 3 )
●There may be a malfunction in the engine immobilizer system. ( P. 76 )
One of the following may be the cause of the problem:
●The battery may be discharged. ( P. 5 9 3 )
●The battery terminal connections may be loose or corroded.
The engine starting system may be malfun ctioning due to an electrical problem
such as electronic key battery depletion or a blown fuse. However, an interim
measure is available to start the engine. ( P. 588)
If the engine will not start
If the engine will not start even though correct starting procedures are being
followed ( P. 193), consider each of the following points:
The engine will not start even thoug h the starter motor operates nor-
mally.
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.
The starter motor does not turn over

5888-2. Steps to take in an emergency
RC350/RCF_U (OM24636U)
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. 5 9 3 )
●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.
When the engine does not start, the following steps can be used as an interim
measure to start the engine if the engine switch is functioning normally:
Set the parking brake.
Shift the shift lever to P.
Turn the engine switch to ACCESSORY mode.
Press and hold the engine switch for about 15 seconds while depressing the
brake pedal firmly.
Even if the engine can be started using the above steps, the system may be mal-
functioning. Have the vehicle inspected by your Lexus dealer.
The starter motor does not turn over, the interior lights and headlights
do not turn on, or the horn does not sound.
Emergency start function
1
2
3
4

662What to do if... (Troubleshooting)
RC350/RCF_U (OM24636U)
●The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat belts? ( P. 5 3 4 )
●The parking brake indicator is on
Is the parking brake released? ( P. 2 0 5 )
Depending on the situation, other type s of warning buzzer may also sound.
( P. 533, 539)

●Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds. ( P. 7 8 )
To stop the alarm, turn the engine switch to IGNITION ON mode or start the
engine.
●Is the electronic key left inside the vehicle or the moon roof opened?
Check the message on the multi-information display. ( P. 5 3 9 )
●When a warning light turns on or a warning message is displayed, refer to
P. 533, 539. 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

671Alphabetical index
RC350/RCF_U (OM24636U)
Front turn signal lights ........................ 204Replacing light bulbs ...............514, 519
Turn signal lever .................................204
Wattage ................................................... 619
Fuel ............................................................. 225 Capacity ................................................ 607
Fuel gauge ...................................... 90, 96
Fuel pump shut off system.............532
Information ........................................... 620
Refueling................................................. 225
Type ............................................. 225, 607
Warning light .......................................534
Fuel consumption Average fuel economy ........... 106, 112
Current fuel consumption ..... 106, 112
Fuel filler door ........................................ 225 If the fuel filler door cannot be opened ......................... 227
Refueling................................................. 225
Fuel gauge ..........................................90, 96
Fuel pump shut off system................. 532
Fuses ..........................................................509
Garage door opener .......................... 440
Gauges ................................................90, 96
Glove box ................................................ 432
Glove box light ...................................... 432 Hands-free system
(for cellular phone)........................... 378
HD Radio
® system .............................. 346
Head restraints......................................... 161
Headlight cleaner .................................. 217
Headlights ............................................... 208 Automatic High Beam system ......................................................211
Light switch...........................................208
Replacing light bulbs .........................519
Heaters Air conditioning system ...................416
Heated steering wheel ................... 425
Outside rear view mirrors ............ 420
Seat heaters .......................................... 426
Hill-start assist control ....................... 282
Hood ..........................................................475 Open ....................................................... 475
Hooks Cargo hooks ....................................... 434
Coat hooks ........................................... 439
Retaining hooks (floor mat)............. 30
Horn............................................................. 165
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