2019 LEXUS RCF ECU

RC F_U Pictorial index Search by illustration
1
For safety
and security Make sure to read through them
2
Instrument cluster How to read the gauges and meters, the variety of
warning lights and indicators, etc.
3
Operation of each
component Opening and closing the doors and windows,
adjustment before driving, etc.
4
Driving Operations and advice which are necessary for driving
5
Interior features Usage of the interior features, etc.
6
Maintenance
and care Caring for your vehicle and maintenance procedures
7
When trouble
arises What to do in case of malfunction or emergency
8
Vehicle
specifications Vehicle specifications, customizable features, etc.
9
For owners Reporting safety defects for U.S. owners, and seat belt
and SRS airbag instructio ns for Canadian owners
10
Index Search by symptom
Search alphabetically

TABLE OF CONTENTS
2
RC F_U For your information................................... 8
Reading this manual................................... 12
How to search ..............................................13
Pictorial index............................................... 14
1-1. For safe use
Before driving ................................ 30
For safe driving .............................. 32
Seat belts .......................................... 34
SRS airbags ..................................... 40
Front passenger occupant
classification system ...................51
Safety information for
children .......................................... 57
Child restraint systems ............... 58
Exhaust gas precautions............ 78
1-2. Theft deterrent system
Engine immobilizer system....... 79
Alarm .................................................80
Theft prevention labels ............... 82 2. Instrument cluster
Warning lights and
indicators....................................... 84
Gauges and meters
(RC350/RC300) .....................91
Gauges and meters (RC F)...... 96
Multi-information display
(RC350/RC300) ................. 103
Multi-information display
(RC F) ............................................. 118
Fuel consumption
information ..................................1351
For safety and security 2
Instrument cluster

29
For safety and security
1
RC F_U 1-1. For safe use
Before driving................................. 30
For safe driving .............................. 32
Seat belts .......................................... 34
SRS airbags ..................................... 40
Front passenger occupant
classification system................... 51
Safety information for
children .......................................... 57
Child restraint systems ...............58
Exhaust gas precautions ............ 78
1-2. Theft deterrent system
Engine immobilizer system ....... 79
Alarm .................................................80
Theft prevention labels ............... 82

30
RC F_U 1-1. For safe use
Use only floor mats designed specifica lly for vehicles of the same model and
model year as your vehicle. Fix them securely in place onto the carpet.
Insert the retaining hooks (clips) into
the floor mat eyelets.
Turn the upper knob of each retain-
ing hook (clip) to secure the floor
mats in place.
* : Always align the marks.
The shape of the retaining hooks (clips) may di ffer from that shown in the illustration.Before driving Floor mat 1
*2

311-1. For safe use
1
For safety and security
RC F_U WARNING
Observe the following precautions.
Failure to do so may cause the driver’s floor mat to slip, possibly interfering with the ped-
als while driving. An unexpectedly high spee d may result or it may become difficult to
stop the vehicle. This could lead to an ac cident, resulting in death or serious injury.■
When installing the driver’s floor mat ●
Do not use floor mats designed for other models or different model year vehicles,
even if they are Lexus Genuine floor mats. ●
Only use floor mats designed for the driver’s seat. ●
Always install the floor mat securely using the retain ing hooks (clips) provided.●
Do not use two or more floor mats on top of each other. ●
Do not place the floor mat bottom-side up or upside-down. ■
Before driving ●
Check that the floor mat is securely fixed in
the correct place with all the provided retain-
ing hooks (clips). Be especially careful to per-
form this check after cleaning the floor. ●
With the engine stopped and the shift lever in
P, fully depress each pedal to the floor to
make sure it does not interfere with the floor
mat.

331-1. For safe use
1
For safety and security
RC F_U Make sure that you can see backward clea rly by adjusting the inside and outside
rear view mirrors properly. (  P. 176, 178)
Adjusting the mirrors WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.●
Do not adjust the position of the driver’s seat while driving.
Doing so could cause the driver to lose control of the vehicle. ●
Do not place a cushion between the dr iver or passenger and the seatback.
A cushion may prevent correct posture from being achieved, and reduce the effec-
tiveness of the seat be lt and head restraint.●
Do not place anything under the front seats.
Objects placed under the fr ont seats may become jammed in the seat tracks and stop
the seat from locking in plac e. This may lead to an accident and the adjustment mech-
anism may also be damaged. ●
Always observe the legal speed limi t when driving on public roads.●
When driving over long distances, take regular breaks before you start to feel tired.
Also, if you feel tired or sleepy while drivin g, do not force yourself to continue driving
and take a break immediately.

351-1. For safe use
1
For safety and security
RC F_U When fastening a front seat belt, ensure that it is passed through the seat belt
guide. Passing the seat belt through the guide enables the seat belt to be easily
extended. When you get into or out of the rear seats, release the seat belt from the seat belt
guide.
The pretensioners help the seat belts to
quickly restrain the occupants by
retracting the seat belts when the vehi-
cle is subjected to certain types of
severe frontal collision or a vehicle roll-
over. The front seat belt pretensioners also
activate when the vehicle is subjected to
certain types of severe side collision.
The pretensioners do not activate in the
event of a minor frontal impact, a minor
side impact or a rear impact.Seat belt guide 
RC350/RC300 
RC F
Seat belt pretensioners

36 1-1. For safe use
RC F_U ■
Emergency locking retractor (ELR)
The retractor will lock th e belt during a sudden stop or on impact. It may also lock if you
lean forward too quickly. A slow, easy motion w ill allow the belt to ex tend so that you can
move around fully. ■
Automatic locking retractor (ALR)
When a passenger’s shoulder belt is completely extended and then retracted even
slightly, the belt is locked in that position and cannot be extended. This feature is used to
hold a child restraint system (CRS) firmly. To fr ee the belt again, fully retract the belt and
then pull the belt out once more. (  P. 60)■
Child seat belt usage
The seat belts of your vehicle were principally designed for persons of adult size. ●
Use a child restraint system appropriate fo r the child, until the child becomes large
enough to properly wear the vehicle’s seat belt. (  P. 58)●
When the child becomes large enough to properly wear the vehicle’s seat belt, follow
the instructions regardin g seat belt usage. (  P. 34)■
Replacing the belt after the pr etensioner has been activated
If the vehicle is involved in multiple collisions, the pretensioner will activate for the first
collision, but will not activate for th e second or subsequent collisions.■
Seat belt extender
If your seat belts cannot be fastened securely
because they are not long enough, a personal-
ized seat belt extender is available from your
Lexus dealer free of charge.