coolant level LEXUS RC350 2022 User Guide

2937-2. Steps to take in an emergency
RC350/RC300 Owner's Manual
7
When trouble arises
■Brake system warning light
■Brake system warning light
■High coolant temperature warning light* (warning buzzer)
*: This light illuminates on the multi-information display.
If a warning light turns on or a warning buzzer sounds
Calmly perform the followin g actions if any of the warning lights comes on or
flashes. If a light comes on or flashes, bu t 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 your Lexus dealer.
Actions to the warning lights or warning buzzers
Warning lightDetails/Actions
(U.S.A.)
or
(red)
(Canada)
Indicates that:
 The brake fluid level is low; or
 The brake system is malfunctioning
 Immediately stop the vehicle in a safe place and contact your Lexus
dealer. Continuing to drive the vehicle may be dangerous.
Warning lightDetails/Actions
(yellow)
Indicates a malfunction in the parking brake system
 Have the vehicle inspected by your Lexus dealer immediately.
Warning lightDetails/Actions
Indicates that the engine coolant temperature is too high
Immediately stop the vehicle in a safe place.
Handling method ( P.320)

3217-2. Steps to take in an emergency
RC350/RC300 Owner's Manual
7
When trouble arises
Radiator
Cooling fans
If a large amount of coolant leaks, immedi-
ately contact your Lexus dealer.
RC300
Radiator
Cooling fans
If a large amount of coolant leaks, immedi-
ately contact your Lexus dealer.
4 The coolant level is satisfactory if it
is between the full (“FULL” or “F”)
and low (“LOW” or “L”) lines on the
reservoir.
 Engine (RC350/RC300 AWD) Reservoir cap
“FULL” or “F”
“LOW” or “L”
 Engine (RC300)
Reservoir cap
“FULL” or “F”
“LOW” or “L”
 Intercooler (RC300)
Reservoir cap
“FULL” or “F”
“LOW” or “L”
A
B
A
B
A
B
C
A
B
C
A
B
C

3438-1. Specifications
RC350/RC300 Owner's Manual
8
Vehicle specifications
cornering (turning) traction.
■Temperature A, B, C
The temperature grades are A (the
highest), B, and C, representing the
tire’s resistance to the generation of
heat and its ability to dissipate heat
when tested under controlled condi-
tions on a specified indoor laboratory
test wheel.
Sustained high temperature can cause the
material of the tire to degenerate and
reduce tire life, and excessive temperature
can lead to sudden tire failure. Grade C corresponds to
a level of perfor-
mance which all passenger car tires must
meet under the Federal Motor Vehicle
Safety Standard No. 109.
Grades B and A represent higher levels of
performance on the laboratory test wheel
than the minimum required by law.
Warning: The temperatur e grades of a tire
assume that it is properly inflated and not
overloaded.
Excessive speed, unde rinflation, or exces-
sive loading, either separately or in combi-
nation, can cause heat buildup and
possible tire failure.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pressure
Tire pressure when the vehicle has been parked for
three hours or more, or has not been driven more
than 1 mile or 1.5 km under that condition
Maximum inflation pressureThe maximum cold inflated pressure to which a tire
may be inflated, shown on the sidewall of the tire
Recommended inflation pressureCold tire inflation pressure recommended by a
manufacturer
Accessory weight
The combined weight (in excess of those standard
items which may be replaced) of automatic trans-
mission, power steering, power brakes, power win-
dows, power seats, radio and heater, to the extent
that these items are available as factory-installed
equipment (whether installed or not)
Curb weight
The weight of a motor vehicle with standard equip-
ment, including the maximum capacity of fuel, oil
and coolant, and if so equipped, air conditioning
and additional weight optional engine

394Alphabetical Index
RC350/RC300 Owner's Manual
Driving mode select switch ....................196
M mode ............................................................ 132
Paddle shift switches ......................... 131, 132
Snow mode ..................................................... 131
Trip meters ........................................................ 70
Trunk .................................................................... 89 Smart access system with push-button start ................................................................... 90
Trunk features...............................................227
Trunk grip ........................................................... 91
Trunk light........................................................... 91
Trunk opener main switch ....................... 92
Trunk opener switch ................................... 90
Wireless remote control............................. 91
Trunk light ............................................................ 91
Turn signal lights Replacing light bulbs................................280
Turn signal lever ...........................................134
Wattage.......................................................... 336
V
Vanity lights.................................................... 229
Vanity mirrors ............................................... 229
Variable Gear Ratio Steering (VGRS)199
VDIM (Vehicle Dynamics Integrated Man-agement)........................................................199
Vehicle data recording ....................................6
Vehicle Dynamics Integrated Manage- ment (VDIM)................................................199
Vehicle identification number ................ 326
Vehicle Stability Control (VSC) ............ 198
Vehicle sway warning display ....................75
Ventilators (seat ventilators)..................... 221
VGRS (Variable Gear Ratio Steering)199
VSC (Vehicle Stabilit y Control) ............ 198
W
Warning buzzer
Open door warning................................. 297
Warning buzzers Approach warning...................................... 179 Brake hold .....................................................299
Brake Override System .........................295
Downshifting ....................................... 132, 133
Drive-Start Control...................................295
Electric power steering...........................295
High coolant temperature.....................293
LDA (Lane Departure Alert with steering
control) ..........................................................167
LDA (Lane Departure Alert) ...............296
Low engine oil pressure.........................294
Open door ............................................. 87, 88
Open window .................................................. 111
Pre-collision braking ................................... 161
Seat belt .......................................................... 297
Warning lights............................................... 293 ABS...................................................................295
Brake hold operated in dicator ...........299
Brake Override System .........................295
Brake system................................................293
Charging system........................................ 294
Drive-Start Control...................................295
Electric power steering...........................295
High coolant temperature.....................293
LDA indicator ..............................................296
Low engine oil pressure.........................294
Low fuel level ............................................... 297
Malfunction indicator lamp ................... 294
Master warning light................................ 298
Open door warning ................................. 297
Parking brake indicator ......................... 298
Pre-collision system..................................296
Seat belt reminder light........................... 297
Slip indicator.................................................296
SRS .................................................................... 294
Tire pressure ............................................... 298
Warning message display............................76
Warning messages ...................................... 301
Washer Checking ....................................................... 262
Preparing and checking before winter..........................................................................203
Switch................................................................ 145