warning lights LEXUS RX300H 2017 User Guide

110
RC300h_EE(OM24740E)
2. Instrument cluster
Except F SPORT models
F SPORT models
The units used on the meters may differ depending on the target region.
Warning lights and indicators
The warning lights and indicators on th e instrument cluster, center panel and
outside rear view mirrors inform the driver of the status of the vehicle’s vari-
ous systems.
For the purpose of explanation, the fo llowing illustrations display all warning
lights and indicators illuminated.

1112. Instrument cluster
2
Instrument cluster
RC300h_EE(OM24740E)
Warning lights inform the driver of malfunctions in the indicated vehicle systems.
*1: These lights turn on when the power switch is turned to ON mode to indicate that a
system check is being performed. They will turn off after the hybrid system is on, or
after a few seconds. There may be a malfunct ion in a system if a light does not come
on, or turn off. Have the vehicle inspected by any authorized Lexus dealer or repairer,
or another duly qualified and equipped professional.
Warning lights
*2Brake system warning light
( P. 537)
*2Slip indicator
( P. 538)
*2Brake system warning light ( P. 537)
*1 Automatic headlight leveling system warning
light ( P. 539)
*1Charging system warning light ( P. 537)Open door warning light ( P. 539)
*1Malfunction indicator
lamp ( P. 537)
Low fuel level warning light
( P. 539)
*1SRS warning light ( P. 538)
Driver’s and front passen- ger’s seat belt reminder light
( P. 539)
*2ABS warning light ( P. 538)
*4Rear passengers’ seat belt reminder lights ( P. 539)
*1Electric power steering sys- tem warning light( P. 538)
*1Master warning light
( P. 539)
*1, 3
(if equipped)
Pre-crash safety system
warning light ( P. 538)
*1
Tire pressure warning light
( P. 539)

1122. Instrument cluster
RC300h_EE(OM24740E)
*2: These lights turn on when the power switch is turned to ON mode to indicate that a
system check is being perfor med. They will turn off after the “READY” indicator turns
on. There may be a malfunction in a system if a light does not come on, or turn off.
Have the vehicle inspected by any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional.
*3: The light flashes to indicate a malfunction.
*4: This light illuminates on the center panel.
The indicators inform the driver of the operating state of the vehicle’s various sys-
tems.
Indicators
Turn signal indicator ( P. 229) Cruise control “SET” indica- tor ( P. 253, 257)
Tail light indicator ( P. 232) (if equipped)
LDA (Lane Departure Alert) indicator ( P. 273)
Headlight high beam indi-
cator ( P. 232)
Lexus parking assist-sensor
indicator ( P. 279)
(if equipped)
Automatic High Beam indi-
cator ( P. 235)
*2, 3 Slip indicator
( P. 305)
(if equipped)
Front fog light indicator
( P. 239)
*1VSC OFF indicator
( P. 307)
Rear fog light indicator ( P. 239)
*1, 4
(if equipped)
Pre-crash safety system warning light ( P. 312)
Cruise control indicator ( P. 253, 257)
*5, 7
(if equipped)
BSM (Blind Spot Monitor) outside rear view mirror
indicators ( P. 319)
(if equipped)
Dynamic radar cruise con- trol indicator ( P. 257)
*8Security indicator ( P. 95, 102)

2384-3. Operating the lights and wipers
RC300h_EE(OM24740E)
WARNING
■Limitations of the Automatic High Beam
Do not rely on the Automatic High Beam. Al ways drive safely, taking care to observe your surroundings and turning high beam on or off manually if necessary.
NOTICE
■Notes when using the Automatic High Beam system
Observe the following to ensure that the Automatic High Beam functions correctly.
●Do not place items on the da shboard. There is a possibility that the camera sensor will mistake items reflected in the windshield fo r streetlights, the headlights of other vehi- cles, etc.
●Do not install a parking tag or any other accessories near or around the camera sen-sor.
●Do not overload the vehicle.
●Do not modify the vehicle.
●If the windshield needs to be replaced, contact any authorized Lexus dealer orrepairer, or another duly qualified and equipped professional.
●Do not touch the camera sensor.
●Do not subject the camera sensor to a strongimpact.
●Do not disassemble the camera sensor.
●Do not spill liquid onto the camera sensor.
●Do not apply window tinting or stickers to the
camera sensor or the area of windshield near the camera sensor.

2484-3. Operating the lights and wipers
RC300h_EE(OM24740E)
WARNING
■Caution regarding the use of windshield wipers in AUTO mode
The windshield wipers may operate unexpectedly if the sensor is touched or the wind- shield is subject to vibration in AUTO mode. Take care that your fingers or anything
else do not become caught in the windshield wipers.
■Caution regarding the use of washer fluid
When it is cold, do not use the washer fluid until the windshield becomes warm. The
fluid may freeze on the windshield and cause low visibility. This may lead to an accident, resulting in death or serious injury.
NOTICE
■When the windshield is dry
Do not use the wipers, as they may damage the windshield.
■When there is no washer fluid spray from the nozzle
Damage to the washer fluid pump may be caused if the lever is pulled toward you and held continually.
■When a nozzle becomes blocked
In this case, contact any authorized Lexus de aler or repairer, or another duly qualified and equipped professional.
Do not try to clear it with a pin or other object. The nozzle will be damaged.

2584-5. Using the driving support systems
RC300h_EE(OM24740E)
This mode employs a radar sensor to detect the presence of vehicles up to
approximately 120 m (400 ft.) ahead, determines the current vehicle-to-vehicle
following distance, and operates to maintain a suitable following distance from
the vehicle ahead.
Note that vehicle-to-vehicle distance will close in when traveling on long downhill slopes.
Example of constant speed cruising
When there are no vehicles ahead
The vehicle travels at the speed set by the driver. The desired vehicle-to-vehicle dis- tance can also be set by operating the vehicle-to-vehicle distance control.
Example of deceleration cruising
When a preceding vehicle driving slower than the set speed appears
When a vehicle is detected running ahead of you, the system automatically deceler- ates your vehicle. When a greater reductio n in vehicle speed is necessary, the system applies the brakes (the stop lights will come on at this time). A warning tone warns you
when the system cannot decelerate sufficiently to prevent your vehicle from closing in on the vehicle ahead.
Example of follow-up cruising
When following a preceding vehicle driving slower than the set speed
The system continues follow-up cruising wh ile adjusting for changes in the speed of
the vehicle ahead in order to maintain the vehicle-to-vehicle distance set by the driver.
Example of acceleration
When there are no longer any preceding vehicles driving slower than the set
speed
The system accelerates until the set speed is reached. The system then returns to con- stant speed cruising.
Driving in vehicle-to-veh icle distance control mode
1
2
3
4

2774-5. Using the driving support systems
4
Driving
RC300h_EE(OM24740E)
●When sunlight or the headlights of oncoming vehicles are shining directly into the cam- era lens
●When driving on roads that are branching or merging
●When driving on a road surface that is wet du e to rain, previous rainfall, standing water, etc.
●When the vehicle experiences strong up-and-down motion such as when driving on an
extremely rough road or on a seam in the pavement
●When headlight brightness at nighttime is reduced due to dirt on the lenses, or when the headlights are misaligned
●When driving on winding roads or roads that are uneven
●When driving on rough or unpaved roads
■When changing the tires
Depending on the tires used, sufficient performance may not be maintainable.
■Warning messages for the LDA system
Warning messages are used to indicate a syst em malfunction or to inform the driver of
the need for caution while driving. ( P. 549)
WARNING
■Before using the LDA system
Do not rely solely on the LDA system. The LDA system does not drive the vehicle auto- matically, nor does it reduce the amount of care you need to take. As such, the driver
must always assume full responsibility fo r understanding his/her surroundings, for operating the steering wheel to correct the driving line, and for driving safely.
Inappropriate or negligent driving could lead to an accident.
■To avoid operating the LDA by mistake
Switch the LDA system off using the LDA switch when not in use.
■Situations unsuitable for LDA system
Do not use the LDA system in any of the following situations.
Otherwise, the system may not function correctly and could result in an accident.
●When driving with tire chains, a spare tire, or similar equipment
●When there are objects or structures along the roadside that might be misinterpreted as lane markers (such as guardrails, a curb, reflector posts, etc.)
●When driving on snowy roads
●When pavement lane markers are difficult to see due to rain, snow, fog, sand, dirt, etc.
●When there are visible lines on the pavement from road repairs, or if the remains of old lane markers are still visible on the road
●When driving on a road with lane closures due to maintenance, or when driving in a temporary lane

5177-3. Do-it-yourself maintenance
7
Maintenance and care
RC300h_EE(OM24740E)
■After a fuse is replaced
●If the lights do not turn on even after the fuse has been replaced, a bulb may need replacement. ( P. 518)
●If the replaced fuse blows again, have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional.
■If there is an overload in a circuit
The fuses are designed to blow, protecting the wiring harness from damage.
■When replacing light bulbs
Lexus recommends that you us e genuine Lexus products designed for this vehicle. Because certain bulbs are connected to circuits designed to prevent overload, non-gen-
uine parts or parts not designed for this vehicle may be unusable.
WARNING
■To prevent system breakdowns and vehicle fire
Observe the following precautions. Failure to do so may cause damage to the vehicle, and possibly a fire or injury.
●Never use a fuse of a higher amperage rating than that indicated, or use any otherobject in place of a fuse.
●Always use a genuine Lexus fuse or equivalent.
Never replace a fuse with a wire, even as a temporary fix.
●Do not modify the fuses or fuse boxes.
■Fuse box near the power control unit
Never check or replace the fuses as there ar e high voltage parts and wiring near the fuse box.Doing so may cause electric shock, re sulting in death or serious injury.
NOTICE
■Before replacing fuses
Have the cause of electrical overload determined and repaired by any authorized Lexus dealer or repairer, or another duly qualified and equipped professional as soon as possible.

5267-3. Do-it-yourself maintenance
RC300h_EE(OM24740E)
WARNING
■Replacing light bulbs
●Turn off the lights. Do not attempt to replace the bulb immediately after turning off the lights.
The bulbs become very hot and may cause burns.
●Do not touch the glass portion of the light bulb with bare hands. When it is unavoid- able to hold the glass portion, use and hold with a clean dry cloth to avoid getting
moisture and oils on the bulb. Also, if the bulb is scratched or dropped, it may blow out or crack.
●Fully install light bulbs and any parts used to secure them. Failure to do so may result
in heat damage, fire, or wate r entering the headlight unit. This may damage the head- lights or cause condensation to build up on the lens.
■To prevent damage or fire
●Make sure bulbs are fully seated and locked.
●Check the wattage of the bulb before installing to prevent heat damage.

5378-2. Steps to take in an emergency
8
When trouble arises
RC300h_EE(OM24740E)
If a warning light turns on or a warning buzzer
sounds
Calmly perform the following actions if any of the warning lights comes on or
flashes. If a light comes on or flashes, but then goes off, this does not necessar-
ily indicate a malfunction in the system. However, if this continues to occur,
have the vehicle inspected by any authorized Lexus dealer or repairer, or
another duly qualified an d equipped professional.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
Brake system warning light (warning buzzer) Indicates that:
• The brake fluid level is low; or • The brake system is malfunctioningThis light also comes on when the parking brake is not released. If
the light turns off after the parking brake is fully released the system is operating normally. 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 maybe dangerous.
Brake system warning lightIndicates a malfunction in:• The regenerative braking system; or
• The electronically controlled brake system  Have the vehicle inspected by any authorized Lexus dealer or repairer, or another duly qualified and equipped professional
immediately.
Charging system warning light Indicates a malfunction in the vehicle’s charging system Immediately stop the vehicle in a safe place and contact any
authorized Lexus dealer or repairer, or another duly qualified and equipped professional.
Malfunction indicator lampIndicates a malfunction in:
• The hybrid system; • The emission control system (if equipped);• The electronic engine control system; or
• The electronic throttle control system  Have the vehicle inspected by any authorized Lexus dealer or repairer, or another duly qualified and equipped professional
immediately.