2020 LEXUS RX350 service indicator

601-3. Lexus Enform
1-3.Lexus Enform
*:If equipped
“SOS” button
LED light indicators
Microphone
■Certification for Lexus Enform
Lexus Enform Safety Con-
nect*
Safety Connect is a subscrip-
tion-based telematics service that
uses Global Positioning System
(GPS) data and embedded cellular
technology to provide safety and
security features to subscribers.
Safety Connect is supported by
Lexus’ designated response center,
which operates 24 hours per day, 7
days per week.
Safety Connect service is available
by subscription on select, telemat-
ics hardware-equipped vehicles.
By using the Safety Connect ser-
vice, you are agreeing to be bound
by the Telematics Subscription Ser-
vice Agreement and its Terms and
Conditions, as in effect and
amended from time to time, a cur-
rent copy of which is available at
Lexus.com. All use of the Safety
Connect service is subject to such
then-applicable Terms and Condi-
tions.
System components
A
B
C

621-3. Lexus Enform
When the engine switch is turned to
IGNITION ON mode, the red indica-
tor light comes on for 2 seconds then
turns off. Afterward, the green indica-
tor light comes on, indicating that the
service is active.
The following indicator light patterns
indicate specific system usage condi-
tions:
Green indicator light on = Active
service
 Green indicator light flashing =
Safety Connect call in process
 Red indicator light (except at vehi-
cle start-up) = System malfunction
(contact your Lexus dealer)
 No indicator light (off) = Safety
Connect service not active
■Automatic Collision Notification
In case of either airbag deployment or
severe rear-end collision, the system is
designed to automatically call the
response center. The responding agent
receives the vehicle’s location and
attempts to speak with the vehicle
occupants to assess the level of emer-
gency. If the occupants are unable to
communicate, the ag ent automatically
treats the call as an emergency, con-
tacts the nearest emergency services
provider to describe the situation, and
requests that assistance be sent to the location.
■Stolen Vehicle Location
If your vehicle is stolen, Safety Connect
can work with local authorities to assist
them in locating and recovering the
vehicle. After filing a police report, call
the Safety Connect response center at
1-800-25-LEXUS
(1-800-255-3987) in the United
States, 1-877-539-8777 in Puerto
Rico or 1-800-265-3987 in Canada,
and follow the prompts for Safety Con-
nect to initiate this service.
In addition to assisting law enforce-
ment with recovery of a stolen vehicle,
Safety-Connect-equipped vehicle
location data may, under certain cir-
cumstances, be shared with third par-
ties to locate your vehicle. Further
information is available at Lexus.com.
■Emergency Assistance Button
(“SOS”)
In the event of an emergency on the
road, push the “SOS” button to reach
the Safety Connect response center.
The answering agent will determine
your vehicle’s location, assess the
emergency, and dispatch the neces-
sary assistance required.
If you accidentally press the “SOS” button,
tell the response-center agent that you are
not experiencing an emergency.
■Enhanced Roadside Assistance
Enhanced Roadside Assistance adds
GPS data to the already included war-
ranty-based Lexus roadside service.
Subscribers can press the “SOS” but-
ton to reach a Safety Connect
Safety Connect LED light Indi-
cators
Safety Connect services

3606-2. Maintenance
The OBD system determines that a
problem exists somewhere in the emis-
sion control system. Your vehicle may
not pass the I/M test and may need to
be repaired. Contact your Lexus
dealer to service the vehicle.
When the battery is disconnected
or discharged
Readiness codes that are set during ordi-
nary driving are erased.
Also, depending on your driving habits, the
readiness codes may not be completely
set.
When the fuel tank cap is loose
The malfunction indicator lamp comes on
indicating a temporary malfunction and
your vehicle may not pass the I/M test.
The error code in the OBD system will
not be cleared unless the vehicle is
driven 40 or more times.
Contact your Lexus dealer to prepare
the vehicle for re-testing.
Emission inspection and
maintenance (I/M) pro-
grams
Some states have vehicle emission
inspection programs which include
OBD (On Board Diagnostics)
checks. The OBD system monitors
the operation of the emission con-
trol system.
If the malfunction indicator lamp
comes on
Your vehicle may not pass the
I/M test in the following situa-
tions:
When the malfunction indicator
lamp still remains on after sev-
eral driving trips
If your vehicle does not pass the
I/M test

4598-1. Specifications
8
Vehicle specifications
■Gasoline quality
In very few cases, driveability problems may
be caused by the brand of gasoline you are
using. If driveability problems persist, try
changing the brand of gasoline. If this does
not correct the problem, consult your Lexus
dealer.
■Recommendation of the use of gasoline
containing detergent additives
●Lexus recommends the use of gasoline
that contains detergent additives to avoid
the build-up of engine deposits.
●All gasoline sold in the U.S.A. contains
minimum detergent additives to clean
and/or keep clean intake systems, per
EPA’s lowest additive s concentration pro-
gram.
●Lexus strongly recommends the use of
Top Tier Detergent Gasoline. For more
information on Top Tier Detergent Gaso-
line and a list of marketers, please go to
the official websit e www.toptiergas.com.
■Recommendation of the use of low
emissions gasoline
Gasolines containing oxygenates such as
ethers and ethanol, as well as reformulated
gasolines, are available in some cities.
These fuels are typically acceptable for use,
providing they meet other fuel require- ments.
Lexus recommends these fuels, since the
formulations allow for reduced vehicle
emissions.
■Non-recommendation of the use of
blended gasoline
●Use only gasoline containing up to 15%
ethanol.
DO NOT use any flex-fuel or gasoline
that could contain more than 15% etha-
nol, including from
any pump labeled
E30 (30% ethanol [ ]), E50 (50%
ethanol [ ]), E85 (85% ethanol [ ])
(which are only some examples of fuel
containing more than 15% ethanol).
●If you use gasohol in your vehicle, be sure
that it has an octane rating no lower than
87.
●Lexus does not recommend the use of
gasoline containing methanol.
■Non-recommendation of the use of gas-
oline containing MMT
Some gasoline contains an octane enhanc-
ing additive called MMT (Methylcyclopen-
tadienyl Manganese Tricarbonyl).
Lexus does not recommend the use of gas-
oline that contains MMT. If fuel containing
MMT is used, your emission control system
may be adversely affected.
The malfunction indicator lamp on the
instrument cluster may come on. If this hap-
pens, contact your Lexus dealer for service.
■If your engine knocks
●Consult your Lexus dealer.
●You may occasionally notice light knock-
ing for a short time wh ile accelerating or
driving uphill. This is normal and there is
no need for concern.
Fuel information
You must only use unleaded gaso-
line.
Select octane rating 87 (Research
Octane Number 91) or higher. Use
of unleaded gasoline with an
octane rating lower than 87 may
result in engine knocking. Per-
sistent knocking can lead to engine
damage.
At minimum, the gasoline you use
should meet the specifications of
ASTM D4814 in the U.S.A.
A
BC

511Alphabetical Index
Rear side marker lightsLight switch .................................................... 190
Replacing light bulbs................................395
Rear turn signal lights Replacing light bulbs................... 395, 399
Turn signal lever .......................................... 184
Wattage..........................................................458
Rear view mirror Inside rear view mirror................................141
Outside rear view mirrors ...................... 142
Rear window defogger ............................. 298
Rear window wiper.....................................200
Refueling Capacity ......................................................... 454
Fuel types....................................................... 454
If the fuel filler door cannot be opened.........................................................................440
Opening the fuel tank cap .................... 202
Remote Touch .............................................. 290
Replacing Electronic key battery..............................389
Fuses ..................................................................391
Light bulbs..................................................... 394
Tires .................................................................. 426
Resetting the message indicating mainte- nance is required ...................................... 356
Rev indicator .....................................................76
Rev peak.............................................................. 77
Road Sign Assist ...........................................227
RSA (Road Sign Assist) .............................227
S
Seat belt reminder ligh t...............................416
Seat belts............................................................ 26 Automatic Locking Retractor ................ 28
Child restraint system installation ......... 46
Cleaning and maintaining the seat belt.........................................................................353
Emergency Locking Retractor .............. 28
How to wear your seat belt ......................27
How your child should wear the seat belt .............................................................................27 Pregnant women, proper seat belt use
............................................................................. 26
Reminder light and buzzer .................... 416
Seat belt extender......................................... 27
Seat belt pretensioners .............................. 29
SRS warning light.........................................414
Seat heaters .................................................... 310
Seat position memory..................................134
Seat ventilators .............................................. 310
Seating capacity.............................................164
Seats Adjustment ............................................122, 124
Adjustment precautions .................122, 123
Child seats/child restraint system installa-tion .................................................................... 45
Cleaning .........................................................353
Driving position memory .........................134
Folding down the rear seatbacks ........124
Head restraints..............................................137
Power easy access system .....................134
Properly sitting in the seat ........................ 25
Seat heaters ................................................... 310
Seat position memory ...............................134
Seat ventilators ............................................. 310
Sensor Automatic headlight system .................. 190
Automatic High Beam system ............. 193
Inside rear view mirror ............................... 141
Intuitive parking assist .............................. 247
LTA (Lane Tracing Assist) ..................... 218
Parking Support Brake function (rear-crossing vehicles) ...................... 270
Parking Support Brake function (static objects) ........................................................265
Radar sensor ....................................205, 242
Rain-sensing windshield wipers .......... 198
RCTA...............................................................255
Service reminder message ..................... 356
Shift lever Automatic transmission ........................... 180
Shift lever light ................................................313
Side airbags ...................................................... 30