LEXUS RX300H 2017 Owners Manual

5518-2. Steps to take in an emergency
8
When trouble arises
RC300h_EE(OM24740E)
Indicates that the windows are not fully closed (with the
power switch off, and the driver’s door open) A buzzer also sounds. Close all the windows.
(If equipped)
Indicates that the windows and the moon roof are not fully closed (with the power switch off, and the driver’s
door open) A buzzer also sounds. Close all the windows and the moon roof.
Indicates a malfunction in the brake override 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 engine oil level is low This message may appear if the vehicle is stopped on a
slope. Move the vehicle to a level surface and check to see if the message disappears.A buzzer also sounds.
 Check the level of engine oil, and add if necessary.
Indicates that the hybrid system has overheated This message may be displayed when driving undersevere operating conditions. (For example, when driv-
ing up a long steep hill.) A buzzer also sounds.
 Stop and check. (P. 587)
Warning messageDetails/Actions
(Flashes)
(Flashes)

5528-2. Steps to take in an emergency
RC300h_EE(OM24740E)
Indicates a malfunction in the automatic headlight
leveling systemA 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 Automatic High Beam system (if equipped); or
• The LED headlight 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 accelerator and brake pedals are
being depressed simultaneously, and the brake override
system is operating. ( P. 207)
 Release the accelerator or brake pedal.
Indicates that the tire in flation pressure is low
 Check the tire inflation pressure, and adjust to the
appropriate level.
Warning messageDetails/Actions
(Flashes)

5538-2. Steps to take in an emergency
8
When trouble arises
RC300h_EE(OM24740E)
Indicates a malfunction in the tire pressure warning sys- tem
 Stop the vehicle in a safe place and turn the power switch off then on again.If the tire pressure warning indicator flashes for 1
minute then illuminates, th ere is a malfunction in the system. Have the vehicle inspected by any autho-rized Lexus dealer or repairer, or another duly qual-
ified and equipped professional.
Indicates that the tire position information cannot be rec- ognized Drive for a short while and check if the display
updates. If the radio wave conditions improve, the displaymay return to normal. If the tire pressure is still not
displayed after driving for several minutes, stop the vehicle in a safe place, turn the power switch offthen on again, and start driving.
If the tire pressure is still not displayed even after repeating this process several times, have the vehi-cle inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
Maintenance of the hybrid battery (traction battery)
cooling component is required The filter may be clogged, the air intake vent may beblocked or there may be a gap in the duct
 Have maintenance performed on the hybrid battery (traction battery) cooling component by any autho-rized Lexus dealer or repairer, or another duly qual-
ified and equipped professional.
Indicates that the washer fluid level is low  Add washer fluid.
Indicates that remaining fuel is approximately 10 L (2.6 gal., 2.2 Imp. gal.) or less Refuel the vehicle.
Warning messageDetails/Actions

5548-2. Steps to take in an emergency
RC300h_EE(OM24740E)
Indicates that the engine oil is scheduled to be changed.
(The indicator will not work properly unless the message has been reset.) Check the engine oil, and change if necessary.
After changing the engine oil, the message should be reset.
Indicates that the engine oil should be changed. (Afterthe engine oil is changed and the message has been
reset.)  Check and change the engine oil, and oil filter by any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional. After changing the engine oil, the message should bereset.
(If equipped)
Indicates that the Automatic High Beam switch ispressed 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 Operation of the pre-crash brake assist is alsostopped.
 Turn the VSC on. (P. 307)
(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.
Warning messageDetails/Actions
(Flashes)

5558-2. Steps to take in an emergency
8
When trouble arises
RC300h_EE(OM24740E)
*: For the EV drive mode operating conditions: P. 221
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 consumpt ion. Wait a while until
the electric power supply is restored.
Indicates that the EV drive mode is not available*The reason the EV drive mode is not available (the
vehicle is idling, hybrid battery [traction battery] charge is low, speed is higher than the EV drive modeoperating speed range, accelerator pedal is
depressed too much) may be displayed. A buzzer also sounds. Use the EV drive mode when it becomes available.
Indicates that the EV drive mode has been automatically
canceled*
The reason the EV drive mode is not available (the hybrid battery [traction batter y] charge is low, speed is
higher than the EV drive mode operating speed range, accelerator pedal is depressed too much) maybe displayed.
A buzzer also sounds.  Drive the vehicle for a while.
Warning messageDetails/Actions
(Except F SPORT models) (F SPORT models) (Flashes) (Flashes)

5568-2. Steps to take in an emergency
RC300h_EE(OM24740E)
■Warning messages
The warning message illustrations used are in tended as examples, and may differ from the image that is actually displaye d on the multi-information display.
■Warning message in radar cruise mode (if equipped)
In the following situations, the warning message may not be displayed even if vehicle-to- vehicle distance decreases:
●When the speed of the preceding vehicle matches or exceeds your vehicle speed
●When the preceding vehicle is traveling at an extremely slow speed
●Immediately after the cruise control speed was set
●When depressing the accelerator pedal
■The LDA (Lane Departure Alert) lane departure warning function (if equipped)
In the following situations, the warning message will not be displayed even if a lane line is crossed.
●When the vehicle speed deviates from the operating range of the LDA system func-tions
●When the lane lines cannot be recognized
■Conditions that the tire pressure warning system may not function properly
P. 489
■Reset the message indicating maintenance is required
Make sure to reset the oil change system. ( P. 476)
■Warning buzzer
 P. 541

5578-2. Steps to take in an emergency
8
When trouble arises
RC300h_EE(OM24740E)
Interior buzzerExteriorbuzzerWarning messageDetails/Actions
Con-
tinuous  The driver’s door was opened when
the shift lever was not in P and the
power switch was not turned off.
 Shift the shift lever to P.
Con-
tinuousCon-
tinuous
The driver’s door was opened and
closed while the electronic key was
not in the vehicle, the shift lever was
not in P and the power switch was
not turned off.
 Shift the shift lever to P.
 Bring the electronic key back
into the vehicle.
OnceCon-
tinuous
An attempt was made to exit the
vehicle with the electronic key and
lock the doors without first turning
the power switch off when the shift
lever was in P.
 Turn the power switch off and
lock the doors again.
(Flashes)
(Displayed alternately)
(Flashes)
(Displayed alternately)
(Flashes)

5588-2. Steps to take in an emergency
RC300h_EE(OM24740E)
Once3 times
The electronic key was carried out-
side the vehicle and a door other
than the driver’s door was opened
and closed while the power switch
was in a mode other than off.
 Bring the electronic key back
into the vehicle.
The driver’s door was opened and
closed while the electronic key was
not in the vehicle, the shift lever was
in P and the power switch was not
turned off.
 Turn the power switch off.
 Bring the electronic key back
into the vehicle.
Once
The electronic key is not detected
when an attempt is made to start the
hybrid system.
 Start the hybrid system with the
electronic key present.
9 times
An attempt was made to drive when
the electronic key was not inside the
vehicle.
 Confirm that the electronic key
is inside the vehicle.
Interior buzzerExteriorbuzzerWarning messageDetails/Actions
(Flashes)
(Flashes)
(Flashes)

5598-2. Steps to take in an emergency
8
When trouble arises
RC300h_EE(OM24740E)
OnceCon- tinuous
An attempt was made to lock the
doors using the smart entry & start system while the electronic key wasstill inside the vehicle.
 Retrieve the electronic key from the vehicle and lock thedoors again.
An attempt was made to lock either
door by opening a door and putting the inside lock button into the lockposition, then closing the door by
pulling on the outside door handle with the electronic key still inside thevehicle.
 Retrieve the electronic key from the vehicle and lock thedoors again.
An attempt was made to lock the
doors other than using the smart entry & start system while the elec-tronic key was still inside the vehicle.
 Retrieve the electronic key from the vehicle and lock the
doors again.
Once
The electronic key has a low 12-volt battery. Replace the electronic key bat-
tery. ( P. 511)
Once
The steering lock could not be released within 3 seconds of the
power switch being pressed.  Press the power switch while depressing the brake pedal and
moving the steering wheel left and right.
InteriorbuzzerExteriorbuzzerWarning messageDetails/Actions
(Flashes)
(Flashes)

5608-2. Steps to take in an emergency
RC300h_EE(OM24740E)
Once
Indicates a malfunction in the smart
entry & start system  Have the vehicle inspected by any authorized Lexus dealer or
repairer, or another duly quali- fied and equipped professional.
Once
• When the doors were unlockedwith the mechanical key and thenthe power switch was pressed, the
electronic key could not be detected in the vehicle.• The electronic key could not be
detected in the vehicle even after the power switch was pressed twoconsecutive times.
 Touch the electronic key to the power switch while depressingthe brake pedal.
Once
During an hybrid system starting
procedure in the event that the elec- tronic key was not functioning prop-erly ( P. 580), the power switch
was touched with the electronic key.  Press the power switch within 10 seconds of the buzzer sounding.

Indicates that:
• With the power switch off, the doors were unlocked and then the
driver’s door was opened and closed• The power switch was turned to
ACCESSORY mode without starting the hybrid system• The shift lever was shifted to P or
N from another position with the power switch in ON mode. Press the power switch while
depressing the brake pedal.
Interior buzzerExteriorbuzzerWarning messageDetails/Actions
(Flashes)
(Flashes)