air LEXUS RC300H 2017 Owners Manual

5187-3. Do-it-yourself maintenance
RC300h_EE(OM24740E)
Check the wattage of the light bulb to be replaced. (P. 605)
Light bulbs
You may replace the following bulbs by yourself. The difficulty level of replace-
ment varies depending on the bulb. As there is a danger that components may
be damaged, we recommend that replacement is carried out by any autho-
rized Lexus dealer or repairer, or an other duly qualified and equipped profes-
sional.
Preparing for light bulb replacement

5257-3. Do-it-yourself maintenance
7
Maintenance and care
RC300h_EE(OM24740E)
■Replacing the following bulbs
If any of the lights listed below has burnt out, have it replaced by any autho-
rized Lexus dealer or repairer, or another duly qualified and equipped profes-
sional.
●Headlights
●Front position lights and daytime running lights
●Front turn signal lights (LED type)
●Front fog lights (if equipped)
●Side turn signal lights
●Stop/tail lights
●Stop lights
●Tail lights
●Rear fog light
●High mounted stoplight
●License plate lights
■LED lights
The lights other than the front turn signal lights (bulb type), rear turn signal lights and back-up lights each consist of a number of LE Ds. If any of the LEDs burn out, take your vehicle to any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional to have the light replaced.
■Condensation build-up on the inside of the lens
Temporary condensation build-up on the inside of the headlight lens does not indicate a
malfunction. Contact any authorized Lexus dealer or repairer, or another duly qualified and equipped professional for more info rmation in the following situations:
●Large drops of water have built up on the inside of the lens.
●Water has built up inside the headlight.
■When replacing light bulbs
 P. 517

530
RC300h_EE(OM24740E)
8-2. Steps to take in an emergency
The following may indicate a problem with your transmission. Contact any
authorized Lexus dealer or repairer, or another duly qualified and equipped pro-
fessional or commercial towing service before towing.
●A warning message for the hybrid system is shown on the multi-information
display and the vehicle does not move.
●The vehicle makes an abnormal sound.
If your vehicle needs to be towed
If towing is necessary, we recommend having your vehicle towed by any
authorized Lexus dealer or repairer , or another duly qualified and equipped
professional or commercial towing se rvice, using a wheel-lift type truck or
flatbed truck.
Use a safety chain system for all towing , and abide by all state/provincial and
local laws.
Situations when it is necessary to contact dealers before towing

5368-2. Steps to take in an emergency
RC300h_EE(OM24740E)
●Fluid leaks under the vehicle.
(Water dripping from the air conditioning after use is normal.)
●Flat-looking tires or uneven tire wear
●Engine coolant temperature gauge continually points higher than normal.
●Changes in exhaust sound
●Excessive tire squeal when cornering
●Strange noises related to the suspension system
●Pinging or other noises related to the hybrid system
●Engine missing, stumbling or running roughly
●Appreciable loss of power
●Vehicle pulls heavily to one side when braking
●Vehicle pulls heavily to one side when driving on a level road
●Loss of brake effectiveness, spongy fe eling, pedal almost touches the floor
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably needs
adjustment or repair. Contact any authorized Lexus dealer or repairer, or
another duly qualified an d equipped professional as soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms

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.

5388-2. Steps to take in an emergency
RC300h_EE(OM24740E)
SRS warning light Indicates a malfunction in:
• The SRS airbag system; or • The seat belt pretensioner system Have the vehicle inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional immediately.
ABS warning lightIndicates a malfunction in:
•The ABS; or • The brake assist system Have the vehicle inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional immediately.
Electric power steering system warning light (warning buzzer)Indicates a malfunction in the EPS (Electric Power Steering) sys-
tem  Have the vehicle inspected by any authorized Lexus dealer or repairer, or another duly qualified and equipped professional
immediately.
(Flashes) (If equipped)
Pre-crash safety system warning lightIndicates a malfunction in the PCS (Pre-Crash Safety system)The warning light will operate as follows, even when the system is
not malfunctioning: • The light will flash quickly when the system is operating.
( P. 311) • The light will turn on when the pre-crash safety system is dis- abled. ( P. 312)
• The light will turn on when th e VSC (Vehicle Stability Control) system is disabled. ( P. 307) • The light will flash when the sy stem cannot temporarily be used.
( P. 554)  Have the vehicle inspected by any authorized Lexus dealer or repairer, or another duly qualified and equipped professional
immediately.
Slip indicator Indicates a malfunction in:• The VSC (Vehicle Stability Control) system;
• The TRC (Traction Control) system; or • The hill-start assist control systemThe light will flash when the VSC or the TRC system is operating.
 Have the vehicle inspected by any authorized Lexus dealer or repairer, or another duly qualified and equipped professionalimmediately.
Warning lightWarning light/Details/Actions

5398-2. Steps to take in an emergency
8
When trouble arises
RC300h_EE(OM24740E)
Automatic headlight leveling system warning light Indicates a malfunction in the au tomatic headlight leveling system
 Have the vehicle inspected by any authorized Lexus dealer or repairer, or another duly qualified and equipped professionalimmediately.
Open door warning light (warning buzzer)*1
Indicates that a door or the trunk is not fully closed
 Check that both side doors and the trunk are closed.
Low fuel level warning light Indicates that remaining fuel is approximately 10 L (2.6 gal., 2.2 Imp.gal.) or less
 Refuel the vehicle.
Driver’s and front passenger’s seat belt reminder light (warning
buzzer)*2
Warns the driver and/or front passe nger to fasten their seat belts  Fasten the seat belt.
If the front passenger’s seat is occupied, the front passenger’s seat belt also needs to be fastened to make the warning light(warning buzzer) turn off.
Rear passengers’ seat belt reminder lights (warning buzzer)*2
Warns the rear passengers to fasten their seat belts  Fasten the seat belt.
Master warning light A buzzer sounds and the warning light comes on and flashes to
indicate that the master warnin g system has detected a malfunc- tion. P. 542
Tire pressure warning light
When the light comes on: Low tire inflation pressure such as• Natural causes ( P. 540)
• Flat tire ( P. 563)  Adjust the tire inflation pressure to the specified level. The light will turn off after a few minutes. If the warning light
does not turn off after a few minutes, perform initialization ( P. 487). If the light does not turn off after performing initialization,have the system checked by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
When the light comes on af ter blinking for 1 minute:
Malfunction in the tire pressure warning system  Have the system checked by any authorized Lexus dealer or repairer, or another duly qualified and equipped professional.
Warning lightWarning light/Details/Actions

5408-2. Steps to take in an emergency
RC300h_EE(OM24740E)
*1: Open door warning buzzer:
 P. 544
*2: Seat belt warning buzzer:
The seat belt warning buzzer sounds to al ert 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.
■Front passenger detection sensor, seat belt reminder and warning buzzer
●If luggage is placed on a front passenger seat, the front passenger detection sensormay cause the warning light to flash and the warning buzzer to sound even if a passen-
ger 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 eq uipped professional as soon as possible.
■Electric power steering system warning light (warning buzzer)
When the 12-volt battery charge becomes insufficient or 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 afte r several minutes, check that the tire infla- tion pressure is at the specifie d 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, adjustingthe tire inflation pressure will turn off the warning light (after a few minutes).
■When a tire is replaced with the spare tire (if equipped)
The spare tire is not equipped with a tire pre ssure warning valve and transmitter. If a tire
goes flat, the tire pressure warning light will no t turn off even though the flat tire has been replaced with the spare tire.
■Conditions that the tire pressure warning system may not function properly
P. 489

5418-2. Steps to take in an emergency
8
When trouble arises
RC300h_EE(OM24740E)
■If the tire pressure warning light frequently comes on after blinking for 1 minute
If the tire pressure warning light frequently comes on after blinking for 1 minute when the power switch is turned to ON mode, have it checked by any authorized Lexus dealer or
repairer, or another duly qua lified and equipped professional.
■Warning buzzer
In some cases, the buzzer may not be heard due to being in a noisy location or audio
sound.
WARNING
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact any authorized Lexus dealer or repairer, or another duly qualified and equipped professional. The vehicle will
become extremely unstable during braking, and the ABS system may fail, which could cause an accident resulting in death or serious injury.
■When the electric power steering system warning light comes on
The steering wheel may become extremely heavy. If the steering wheel becomes heavier than us ual when operating, hold firmly and oper- ate using more force than usual.
■If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause a loss of vehicle control and result in death or serious injury.
●Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pressureimmediately.
●If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, it is probable that you have a flat tire. Check the tires. If a tire is flat, repair the flat tire by using emergency tire puncture repair kit.
●Avoid abrupt maneuvering and braking. If th e vehicle tires deteriorate, you could lose
control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.
NOTICE
■To ensure the tire pressure warning system operates properly
Do not install tires with different specifications or makers, as the tire pressure warning system may not operate properly.

5428-2. Steps to take in an emergency
RC300h_EE(OM24740E)
Master warning light
The master warning light also comes on or flashes in order to indicate that a message is currently being displayed on the multi-information display.
Multi-information display
If any of the warning message is shown again after the following actions have
been performed, contact any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional.
If a warning message is displayed
If a warning is shown on the multi-information display, stay calm and perform
the following actions:
Except F SPORT modelsF SPORT models (main meter in
center position)
F SPORT models (main meter
moved to the right)
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