brake sensor Lexus IS300h 2014 User Guide

2984-5. Using the driving support systems
IS300h_EE(OM53C61E)
CAUTION
■Limitations of the pre-crash safety system
Do not overly rely on the pre-crash safety system. Always drive safely, taking care to
observe your surroundings and checking for any obstacles or other road hazards.
Failure to do so may cause an accident resulting in death or serious injury.
■Handling the radar sensor
Observe the following to ensure the pre-crash safety system can function effectively.
Otherwise, the system may not function correctly and could result in an accident.
●Keep the sensor and grille cover clean at all times.
Clean the sensor and grille cover with a soft cloth so you do not mark or damage
them.
●Do not subject the sensor or surrounding area to a strong impact.
If the sensor moves even slightly off position, the system may malfunction. If the sen-
sor or surrounding area is subject to a strong impact, always have the area inspected
and adjusted by any authorized Lexus dealer or repairer, or another duly qualified
and equipped professional.
●Do not disassemble the sensor.
●Do not attach accessories or stickers to the sensor, grille cover or surrounding area.
●Do not modify or paint the sensor and grille cover.
●Do not replace them with non-genuine parts.
■Cautions regarding the assist contents of the system
By means of alarms and brake control, the pre-crash safety system is intended to assist
the driver in avoiding collisions through the process of LOOK-JUDGE-ACT. There are
limits to the degree of assistance the system can provide, so please keep in mind the
following important points.
●Assisting the driver in watching the road
The pre-crash safety system is only able to detect obstacles directly in front of the
vehicle, and only within a limited range. It is not a mechanism that allows careless or
inattentive driving, and it is not a system that can assist the driver in low-visibility con-
ditions. It is still necessary for the driver to pay close attention to the vehicle’s sur-
roundings.
●Assisting the driver in making correct judgment
When attempting to estimate the possibility of a collision, the only data available to
the pre-crash safety system is that from obstacles it has detected directly in front of
the vehicle. Therefore, it is absolutely necessary for the driver to remain vigilant and
to determine whether or not there is a possibility of collision in any given situation.
●Assisting the driver in taking action
The pre-crash safety system’s braking assist feature is designed to help reduce the
severity of a collision, and so only acts when the system has judged that a collision is
unavoidable. This system by itself is not capable of automatically avoiding a collision
or bringing the vehicle to a stop safely. For this reason, when encountering a danger-
ous situation the driver must take direct and immediate action in order to ensure the
safety of all involved.
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5068-2. Steps to take in an emergency
IS300h_EE(OM53C61E)*
1: Parking brake engaged warning buzzer:
→P. 5 1 3
*2: Open door warning buzzer:
→P. 5 1 1
*3: Seat belt warning buzzer:
The seat belt warning buzzer sounds to alert the driver, front passenger and rear pas-
sengers that his or her seat belt is not fastened. The buzzer sounds for 30 seconds
after the vehicle reaches a speed of 20 km/h (12 mph). Then, if the seat belt is still
unfastened, the buzzer will sound in a different tone for 90 more seconds.
■Passenger detection sensor, seat belt reminder and warning buzzer
●If luggage is placed on a passenger seat, the passenger detection sensor may cause the
warning light to flash and the warning buzzer to sound even if a passenger is not sitting
in the seat.
●If a cushion is placed on the seat, the sensor may not detect a passenger, and the warn-
ing light may not operate properly.
■If the malfunction indicator lamp comes on while driving
The malfunction indicator lamp will come on if the fuel tank becomes completely empty.
If the fuel tank is empty, refuel the vehicle immediately. The malfunction indicator lamp
will go off after several trips.
If the malfunction indicator lamp does not go off, contact any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional as soon as possible.
■Electric power steering system warning light (warning buzzer)
When the 12-volt battery charge becomes insufficient of the voltage temporarily drops,
the electric power steering system warning light may come on and the warning buzzer
may sound.
■When the tire pressure warning light comes on
Carry out the following procedure after the tire temperature has lowered sufficiently.
●Check the tire inflation pressure and adjust to the appropriate level.
●If the warning light does not go out even after several minutes, check that the tire infla-
tion pressure is at the specified level and carry out initialization.
The warning light may come on again if the above operations are conducted without first
allowing the tire temperature to lower sufficiently.
■The tire pressure warning light may come on due to natural causes
The tire pressure warning light may come on due to natural causes such as natural air
leaks and tire inflation pressure changes caused by temperature. In this case, adjusting
the tire inflation pressure will turn off the warning light (after a few minutes).
■Conditions that the tire pressure warning system may not function properly
→P. 4 5 4
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5118-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53C61E)
Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
A buzzer also sounds.
→Immediately stop the vehicle in a safe place and
contact any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
Continuing to drive the vehicle may be dangerous.
Indicates a malfunction in the hybrid system
A buzzer also sounds.
→Immediately stop the vehicle in a safe place and
contact any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
Indicates that one or more of the doors is not fully closed
The system also indicates which doors are not fully
closed.
If the vehicle reaches a speed of 5 km/h (3 mph),
flashes and a buzzer sounds to indicate that
the door(s) are not yet fully closed.
→Make sure that all the doors are closed.
Indicates that the hood is not fully closed
If the vehicle reaches a speed of 5 km/h (3 mph),
flashes and a buzzer sounds to indicate that
the hood is not yet fully closed.
→Close the hood.
Indicates that the trunk is not fully closed
If the vehicle reaches a speed of 5 km/h (3 mph),
flashes and a buzzer sounds to indicate that
the trunk is not yet fully closed.
→Close the trunk.
(If equipped)
Indicates a malfunction in the Lexus parking assists-sen-
sor
The assist-sensors flash.
A buzzer also sounds.
→Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Wa r n i n g m e s s a g eDetails/Actions
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5138-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53C61E)
Indicates a malfunction in the EPS (Electric Power Steer-
ing) system
A buzzer also sounds.
→Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Indicates that the vehicle is being driven at 5 km/h (3
mph) or more with the parking brake still engaged
A buzzer also sounds.
→Release the parking brake.
Indicates a malfunction in:
• The SRS airbag system; or
• The seat belt pretensioner system
A buzzer also sounds.
→Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Indicates a malfunction in:
•The ABS; or
• The brake assist system
A buzzer also sounds.
→Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Indicates that the engine coolant temperature is too high
A buzzer also sounds.
→P. 5 5 2
(If equipped)
Indicates that the radar sensor is dirty or covered with
ice
A buzzer also sounds.
→Clean the sensor.
Wa r n i n g m e s s a g eDetails/Actions
(Flashes)
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5188-2. Steps to take in an emergency
IS300h_EE(OM53C61E)
(If equipped)
Indicates that all maintenance listed in the maintenance
schedule*1 corresponding to the current vehicle mile-
age is necessary.
(The indicator will not work properly unless the mainte-
nance data has been reset.)
→Perform the necessary maintenance. Please reset
the maintenance data after the maintenance is per-
formed (→P. 4 4 2 )
(If equipped)
Indicates that the Automatic High Beam switch is
pressed while the headlights are in low beam.
→Turn the high beam on and press the Automatic
High Beam switch again.
(If equipped)
Indicates that, since the VSC (Vehicle Stability Control)
system was turned off, the pre-crash brake system oper-
ation is stopped
→Tu r n t h e V S C o n . (→P. 2 8 8 )
(If equipped)
Indicates that the PCS (Pre-Crash Safety system) is not
currently functional because the grille cover or the sen-
sor is dirty
→Check the grille cover and the sensor and clean
them if they are dirty.
Indicates that operation of large electricity consuming
systems such as the air conditioning system are sus-
pended
→Stop using unnecessary electric components to
reduce electricity consumption. Wait a while until
the electric power supply is restored.
(If equipped)
Indicates that the LDA (Lane Departure Alert) system
cannot be used because the vehicle speed is lower than
approximately 50 km/h (32 mph)
→Drive the vehicle at 50 km/h (32 mph) or higher.
Wa r n i n g m e s s a g eDetails/Actions
(Flashes)
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588What to do if... (Troubleshooting)
IS300h_EE(OM53C61E)
●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. 1 8 4 )
●The auto power off function will be operated if the vehicle is left in ACCES-
SORY or ON mode (the hybrid system is not operating) for a period of time.
(→P. 211)
●The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat belts? (→P. 505)
●The parking brake indicator is on
Is the parking brake released? (→P. 2 2 4 )
Depending on the situation, other types of warning buzzer may also sound.
(→P. 503, 509)

●Did anyone inside the vehicle open a door or anything move inside the vehicle
during setting the alarm?
The sensor detects them and the alarm sounds. (→P. 9 6 )
To stop the alarm, turn the power switch to ON mode or start the hybrid system.The windows do not open or close by operating the power window
switches
The power switch is turned off automatically
A warning buzzer sounds during driving
An alarm is activated and the horn sounds (if equipped)
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602Alphabetical index
IS300h_EE(OM53C61E)
Odometer................................................. 109
Oil
Differential oil ....................................... 567
Engine oil ...............................................563
Opener
Hood ........................................................ 437
Trunk ..........................................................143
Outer foot lights
Location..................................................... 411
Replacing light bulbs....................... 486
Wattage..................................................570
Outside rear view mirrors .................180
Adjusting and folding........................ 180
BSM (Blind Sport Monitor)..........299
Linked mirror function
when reversing................................. 182
Mirror position memory.................. 168
Outside rear view mirror
defoggers ..........................................404
Outside temperature ........................... 109
Overheating ...........................................552Paddle shift switches .............................218
Parking assist sensors..........................267
Parking brake......................................... 224
PCS
(Pre-Crash Safety system)............ 292
Function...................................................292
PCS OFF switch................................ 293
Warning light....................................... 504
Personal lights.......................................... 412
Wattage ................................................. 570
Pollen removal mode.......................... 404
Pop-up display.......................................... 117
Pop Up Hood............................................ 56
Power control unit .................................. 83
Power control unit coolant ............... 444
Capacity................................................. 565
Checking ............................................... 444
Preparing and checking before
winter ....................................................... 311
OP
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607Alphabetical index
IS300h_EE(OM53C61E)
Stop lights
Emergency brake signal ................ 287
Replacing light bulbs....................... 490
Storage feature....................................... 413
Stuck
If the vehicle becomes stuck ....... 556
Sun visors ................................................. 420
Sun shade
Rear .......................................................... 422
Roof ........................................................... 188
switch settings ................................... 117Switches
ASC (Active Sound Control)......225
Audio remote control
switches ...............................................322
Automatic High Beam switch......229
BSM (Blind Spot Monitor)
switch ................................................... 299
Cruise control
switch ....................................... 245, 249
Door lock switches............................. 139
Driving mode select switch.......... 283
Driving position memory
switches ................................................168
Emergency flashers switch........... 494
EV drive mode switch ...................... 214
Fog light switch................................... 233
Heated steering wheel
switch ................................................... 409
Ignition switch ..................................... 209
LDA (Lane Departure Alert)
switch ....................................................262
Lexus parking assist-sensor
switch ....................................................267
Light switch............................................226
Meter control switches.......................116
Moon roof switches ........................... 187
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610Alphabetical index
IS300h_EE(OM53C61E)
Units .............................................................. 117
USB device ...................................351, 393
Connecting........................................... 323
USB audio .............................................. 351
USB photo ............................................ 393
USB video .............................................. 351
USB port................................................... 323
Vanity lights .............................................420
Vanity lights .......................................... 420
Wattage..................................................570
Vanity mirrors ........................................420
VDIM (Vehicle Dynamics
Integrated Management) .............. 287
Vehicle identification number .......... 561
Vehicle Stability Control
(VSC) ....................................................286
Ventilators (seat ventilators) ............. 410
VSC (Vehicle Stability
Control)................................................. 286Warning buzzers
Approach warning ........................... 254
Brake system ....................................... 503
Downshifting........................................ 220
Driver’s and front
passenger’s seat belt
reminder ........................................... 505
Lexus parking assist-sensor .........267
Open door ...........................................505
Pre-crash braking ..............................292
Rear passengers’ seat belt
reminder .............................................505
Warning lights ........................................ 105
ABS .......................................................... 504
Automatic headlight leveling
system..................................................505
Brake system ....................................... 503
Charging system ............................... 503
Driver’s and front
passenger’s seat belt
reminder light...................................505
Electric power steering
system.................................................. 504
Low fuel level.......................................505
Malfunction indicator lamp .......... 503
Master warning light ........................505
Open door ...........................................505
Pre-crash safety system ................. 504
Rear passengers’ seat belt
reminder lights ................................505
Slip indicator ........................................ 504
SRS ........................................................... 504
Tire pressure........................................505
U
V
W
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