warning LEXUS RC F 2015 Manual Online

5418-2. Steps to take in an emergency
8
When trouble arises
RC350/RCF_U (OM24636U)
(If equipped)
Alerts the driver that the vehicle has deviated from the
lane (while the LDA [Lane Departure Alert] system is
operating)The lane line on the side the vehicle has deviated from
flashes in yellow.
The warning buzzer sounds continuously.
 Check around the vehicle and back to inside of the
lane lines.
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 your Lexus dealer. Continuing to drive the
vehicle may be dangerous.
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 3 mph (5 km/h),
flashes and a buzzer sounds to indicate
that the door(s) are not yet fully closed.
 Make sure that both side doors are closed.
Indicates that the hood is not fully closed
If the vehicle reaches a speed of 3 mph (5 km/h),
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 3 mph (5 km/h),
flashes and a buzzer sounds to indicate
that the trunk is not yet fully closed.
 Close the trunk.
Wa r n i n g m e s s a g eDetails/Actions
(U.S.A.) (Canada)

5458-2. Steps to take in an emergency
8
When trouble arises
RC350/RCF_U (OM24636U)
(If equipped)
Indicates that a Blind Spot Monitor sensor or the sur-
rounding area on the rear bumper is dirty or covered
with snow, ice, etc. or that a sensor is misaligned
A buzzer also sounds.
 Clean off the dirt, snow, ice, etc. and drive the vehi-
cle with the operation conditions of the BSM func-
tion ( P. 303) satisfied for approximately 10
minutes. If the warning message does not disappear,
the sensor may be misaligned. Have the vehicle
inspected by your Lexus dealer.
Indicates a malfunction in:
• The cruise control system; or
• The dynamic radar cruise control system (if equipped)
Press the “ON/OFF” button once to deactivate the
system, and then press the button again to reactivate
the system.
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
(If equipped)
Indicates a malfunction in the LDA (Lane Departure
Alert) system
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
(If equipped)
Indicates a malfunction in the PCS (Pre-Collision Sys-
tem)
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer
immediately.
Wa r n i n g m e s s a g eDetails/Actions
(Flashes)

5518-2. Steps to take in an emergency
8
When trouble arises
RC350/RCF_U (OM24636U)
Indicates that the tire inflation pressure is low
 Check the tire inflation pressure, and adjust to the
appropriate level.
Indicates a malfunction in th e tire pressure warning sys-
tem
 Stop the vehicle in a safe place and turn the engine
switch off then on again.
If the tire pressure warning indicator flashes for 1
minute then illuminates, there is a malfunction in the
system. Have the vehicle inspected at your Lexus
dealer.
Indicates that the tire position information cannot be rec-
ognized
Drive for a short while an d check if the display
updates.
If the radio wave conditions improve, the display
may return to normal. If th e tire pressure is still not
displayed after driving for several minutes, stop the
vehicle in a safe place, turn the engine switch off
then 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 at your Lexus dealer.
RC F only
Indicates a malfunction in the active rear wing
 Have the vehicle inspected by your Lexus dealer.
Indicates that the wash er fluid level is low
 Add washer fluid.
Wa r n i n g m e s s a g eDetails/Actions

5548-2. Steps to take in an emergency
RC350/RCF_U (OM24636U)
■Wa r n i n g m e s s a g e s
The warning message illustrations used are intended as examples, and may differ from
the image that is actua lly displayed on the multi-information display.
■Warning message in radar cruise mode (if equipped)
In the following situations, the warning messag e may not be displayed even if vehicle-to-
vehicle distance decreases:
●When your vehicle and the vehicle ahead are traveling at the same speed or the vehicle
ahead is traveling more quickly than your vehicle
●When the vehicle ahead is traveling at a very low speed
●Immediately after cruise control speed is set
●At the instant the accelerator pedal is depressed
■The LDA (Lane Departure Alert) lane departure warning function
In the following situations, the warning messag e 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
■Reset the maintenance data (U.S.A. only)
Make sure to reset the oil change system. ( P. 4 6 7 )
■Conditions that the tire pressure warning system may not function properly
 P. 4 9 6
■Warning buzzer
P. 5 3 6

5598-2. Steps to take in an emergency
8
When trouble arises
RC350/RCF_U (OM24636U)
*: The engine may not be restarted depending on the vehicle condition.
■Wa r n i n g m e s s a g e s
P. 5 5 4
■Warning buzzer
P. 5 3 6
Once
After the engine switch has been
turned off with the shift lever in a
position other than P, the shift lever
has been shifted to P.
 Turn the engine switch off.

Power was turned off due to the
automatic power off function.
Next time when starting the
engine, increase the engine
speed slightly and maintain that
level for approximately 5 min-
utes to recharge the battery.
Con-
tinuous
Indicates that the engine was
stopped in an emer gency while driv-
ing
 To restart the engine, shift the
shift lever to N and turn the
engine switch to IGNITION
ON mode.
*
Once
Indicates that the engine switch has
been pressed while driving
Except when emergency stop-
ping of the vehicle is needed,
immediately release the engine
switch.
Interior
buzzerExteriorbuzzerWa r n i n g m e s s a g eDetails/Actions
(Flashes)
(Flashes)
(Flashes)

5718-2. Steps to take in an emergency
8
When trouble arises
RC350/RCF_U (OM24636U)
Firmly tighten each wheel nut two or
three times in the order shown in the
illustration.
Tightening torque:
76 ft•lbf (103 N•m, 10.5 kgf•m)
Stow the flat tire, tire jack and all tools.
■The spare tire
●RC350: The spare tire is identified by the label “TEMPORARY USE ONLY” on the
tire sidewall.
●Use the spare tire temporarily, and only in an emergency.
●Make sure to check the tire inflation pressure of the spare tire.
( P. 6 1 4 )
■When using the spare tire
As the spare tire is not equipped with a tire pressure warning valve and transmitter, low
inflation pressure of the spare tire will not be indicated by the tire pressure warning sys-
tem. Also, if you replace the spare tire after the tire pressure warning light comes on, the
light remains on.
■When the spare tire is equipped
The vehicle becomes lower when driving with the spare tire compared to when driving
with standard tires.
■If you have a flat rear tire on a road covered with snow or ice (vehicles with front and
rear tires of the same size except for ve hicles with 235/40R19 tires and LDH system)
Install the spare tire on one of the front wheels of the vehicle. Perform the following steps
and fit tire chains to the rear tires: Replace a front tire with the spare tire.
Replace the flat rear tire with the tire removed from the front of the vehicle.
Fit tire chains to the rear tires.
4
5
1
2
3

5728-2. Steps to take in an emergency
RC350/RCF_U (OM24636U)
WA R N I N G
■When using the spare tire
●Remember that the spare tire provided is specifically designed for use with your vehi-
cle. Do not use your spare tire on another vehicle.
●Do not use more than one spare tires simultaneously.
●Replace the spare tire with a standard tire as soon as possible.
●Avoid sudden acceleration, abrupt steering, sudden braking and shifting operations
that cause sudden engine braking.
■When the spare tire is attached
The vehicle speed may not be correctly detected, and the following systems may not
operate correctly:
Also, not only can the following system not be utilized fully, but it may even negatively
affect the drive-train components:
• AWD system (if equipped)
■Speed limit when using the spare tire
Do not drive at speeds in excess of 50 mp h (80 km/h) when a spare tire is installed on
the vehicle.
The spare tire is not designed for driving at high speeds. Failure to observe this precau-
tion may lead to an accident causing death or serious injury.
■After using the tools and jack
Before driving, make sure all the tools and jack are securely in place in their storage
location to reduce the possibility of personal injury during a collision or sudden brak-
ing.
• ABS & Brake assist
•VSC
•TRAC
• Cruise control (if equipped)
• Dynamic radar cruise control (if equipped)
• PCS (if equipped)
•EPS
• Adaptive Variable Suspension System (if equipped)
• LDA (Lane Departure Alert) (if equipped) • VGRS (if equipped)
• LDH (Lexus Dynamic Handling sys-
tem) (if equipped)
• DRS (Dynamic Rear Steering) (if equipped)
• VDIM (Vehicle Dy namics Integrated
Management)
• Tire pressure warning system
• Lexus parking assist monitor
• Intuitive parking assist (if equipped)
• Navigation system (if equipped)

5738-2. Steps to take in an emergency
8
When trouble arises
RC350/RCF_U (OM24636U)
NOTICE
■Driving with tire chains and the spare tire
Do not fit tire chains to the spare tire.
Tire chains may damage the vehicle body and adversely affect driving performance.
■When replacing the tires
When removing or fitting the wheels, tires or the tire pressure warning valve and trans-
mitter, contact your Lexus dealer as the tire pressure warning valve and transmitter
may be damaged if not handled correctly.

5848-2. Steps to take in an emergency
RC350/RCF_U (OM24636U)
■If the tire is inflated to more than the recommended levelDisconnect the hose from the valve.
Disconnect the hose from the valve, remove the air release cap from the hose and then
reconnect the hose.
Turn the compressor switch on and wait for se veral seconds, then turn it off. Check that
the air pressure indicator shows the recommended level. ( P. 6 1 4 )
If the air pressure is lower than the recommended level, turn the compressor switch on
again and repeat the inflation procedure until the recommended pressure is reached.
■The valve of a tire that has been repaired
●After a tire is repaired with the emergency tire puncture repair kit, the valve should be
replaced.
●After a tire is repaired with the emergency tire puncture repair kit, even if the tire infla-
tion pressure is at the recommended level, the tire pressure warning light may come
on/flash.
■Note for checking the emergency tire puncture repair kit
Check the sealant expiry date occasionally.
The expiry date is shown on the bottle. Do not use sealant whose expiry date has already
passed. Otherwise, repairs conducted using th e emergency tire puncture repair kit may
not be performed properly. Install the air release cap to the end of the
hose and push the protrusion on the air
release cap into the valve to let some air out.
WA R N I N G
■Caution while driving
Observe the following precautions.
Failure to do so may cause an accident.
●The emergency tire puncture repair kit is made exclusively for your vehicle. Do not
use it on other vehicles.
●Do not use the emergency tire puncture repair kit for tires that are a different size
than the specified ones or fo
r any other purpose. Doing so may cause the tires to not
be repaired properly.
■Precautions for use of the sealant
●Ingesting the sealant is hazardous to your health. If you ingest sealant, consume as
much water as possible, then immediately consult a doctor.
●If sealant gets in eyes or adheres to skin, immediately wash it off with water. If discom-
fort persists, consult a doctor.
1
2
3
4

5858-2. Steps to take in an emergency
8
When trouble arises
RC350/RCF_U (OM24636U)
WA R N I N G
■When fixing the flat tire
●Stop your vehicle in a safe and flat area.
●Do not touch the wheels or the area around the brakes immediately after the vehicle
has been driven.
After the vehicle has been driven, the wheels and the area around the brakes may be
extremely hot. Touching these areas with hands, feet or other body parts may result in
burns.
●Connect the valve and hose securely wi th the tire installed on the vehicle.
●If the hose is not properly connected to the valve, air leakage may occur or sealant
may be sprayed out.
●If the hose comes off the valve while inflating the tire, there is a risk that the hose will
move abruptly due to air pressure.
●After inflation of the tire has completed, the sealant may splatter when the hose is dis-
connected or some air is let out of the tire.
●Follow the operation procedure to repair the tire. If the procedure is not followed, the
sealant may spray out.
●Keep back from the tire while it is being re paired, as there is a chance of it bursting
while the repair operation is being perfor med. If you notice any cracks or deforma-
tion of the tire, turn off the compressor sw itch and stop the repair operation immedi-
ately.
●The kit may overheat if operated for a long period of time. Do not operate the com-
pressor continuously for more than 35 minutes.
●Parts of the kit become hot during operatio n. Be careful handling the kit during and
after operation. Do not touch the metal part around the connecting area between the
bottle and compressor. It will be extremely hot.
●Do not attach the vehicle speed warning sticker to an area other than the one indi-
cated. If the sticker is attached to an area where an SRS airbag is located, such as the
pad of the steering wheel, it may prevent the SRS airbag from operating properly.
■Driving to spread the liquid sealant evenly
●Drive the vehicle carefully at a low speed. Be especially careful when turning and cor-
nering.
●If the vehicle does not drive straight or you feel a pull through the steering wheel, stop
the vehicle and check the following:
• Tire condition. The tire may have separated from the wheel.
• Tire inflation pressure. If tire inflation pressure is 19 psi (130 kPa, 1.3 kgf/cm
2 or
bar) or below, this may indicate severe tire damage.