2018 LEXUS RC350 air conditioning

4517-2. Steps to take in an emergency
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
7
When trouble arises
●Fluid leaks under the vehicle.
(Water dripping from the air conditioning after use is normal.)
●Flat-looking tires or uneven tire wear
●Engine coolant temperature gauge cont inually points higher than normal.
●Changes in exhaust sound
●Excessive tire squeal when cornering
●Strange noises related to the suspension system
●Pinging or other noises related to the engine
●Engine missing, stumbling or running roughly
●Appreciable loss of power
●Vehicle pulls heavily to one side when braking
●Vehicle pulls heavily to one side when driving on a level road
●Loss of brake effectiveness, spongy feeling, pedal almost touches the floor
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably needs
adjustment or repair. Contact your Lexus dealer as soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms

4817-2. Steps to take in an emergency
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
7
When trouble arises
*: Refer to the separate “Scheduled Mainte nance” or “Owner’s Manual Supplement”
for the maintenance interval applicable to your vehicle.
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.
If this message is freque ntly displayed, have the
vehicle inspected at your Lexus dealer immediately.
Indicates that the PCS (Pre -Collision System) is tempo-
rarily unavailable
 When conditions improve, the system resumes
operation. If this message is displayed continuously,
have the vehicle inspected by your Lexus dealer.
Indicates that part of th e PCS (Pre-Collision System)
sensor is dirty, covered with ice, etc.
 Remove any dirt, ice, etc.
Warning messageDetails/Actions
(Flashes)

5267-2. Steps to take in an emergency
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
●The engine coolant temperature gauge ( P. 91, 96) is in the red zone or a
loss of engine power is experienced. (For example, the vehicle speed does not
increase.)
●“Engine Coolant Temp High Stop in a Safe Place See Owner's Manual” is
shown on the multi-information display.
●Steam comes out from under the hood.
Stop the vehicle in a safe place and tu rn off the air conditioning system, and
then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
If your vehicle overheats
The following may indicate that your vehicle is overheating.
Correction procedures
1
2

5297-2. Steps to take in an emergency
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
7
When trouble arises
Add coolant if necessary.
Water can be used in an emerge ncy if coolant is unavailable.
Start the engine and turn the air conditio ning system on to check that the radi-
ator cooling fans operate and to check for coolant leaks from the radiator or
hoses.
The fans operate when the air conditioning system is turned on immediately after a
cold start. Confirm that the fans are operating by checking the fan sound and air flow.
If it is difficult to check these, turn the air conditioning system on and off repeatedly.
(The fan may not operate in freezing temperatures.)
If the fans are not operating:
Stop the engine immediately an d contact your Lexus dealer.
If the fans are operating:
Have the vehicle inspected at the nearest Lexus dealer.
5
Engine (RC350/RC300 AWD)Engine (RC300)
Engine (RC F)Intercooler (RC300)
6
7

5758-2. Customization
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
8
Vehicle specifications
■Intuitive parking assist* ( P. 280)
*: If equipped
■Driving mode select switch ( P. 301)
*: If equipped
■Active rear wing* ( P. 307)
*:RC F
■Automatic air conditioning system ( P. 333)
FunctionDefault settingCustomized setting
Detection distance of the front
center sensor*FarNearOO
Detection distance of the rear
center sensorFarNearOO
Buzzer volume21 to 3OO
12
FunctionDefault settingCustomized setting
Powertrain control in custom
mode*NormalPowerO—Eco
Chassis control in custom
mode
*NormalSportO—
Air conditioning operation in
custom mode*NormalEcoO—
12
FunctionDefault settingCustomized setting
Operation of the active rear wingOffOn—O
12
FunctionDefault settingCustomized setting
A/C auto switch operationOnOffOO
Exhaust gas sensor sensitivityStandard-3 to 3OO
12

616
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
Alphabetical index
Alphabetical index
A/C ............................................................ 333
Air conditioning filter........................425
Automatic air conditioning system ..................................................333
ABS (Anti-lock Brake System).........312 Warning light .......................................453
Active rear wing.................................... 307
Active Sound Control (ASC).......................................... 223, 224
Adaptive Variable Suspension System.............................313
Air conditioning filter .......................... 425
Air conditioning system ..................... 333 Air conditioning filter........................425
Automatic air conditioning system ..................................................333 Airbags ........................................................ 40
Airbag operating conditions ...........47
Airbag precautions for your child ........................................42
Correct driving posture .....................32
Curtain shield airbag operating conditions ........................47
Curtain shield airbag precautions .......................................... 44
Front passenger occupant classification system........................... 51
General airbag precautions ............42
Locations of airbags............................ 40
Modification and disposal of airbags............................................... 46
Side airbag operating conditions ..............................................47
Side airbag precautions .....................42
Side and curtain shield airbags operating conditions ........................47
Side and curtain shield airbags precautions ..........................42
SRS airbags ............................................. 40
SRS warning light .............................. 453
A

623Alphabetical index
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
Garage door opener .......................... 359
Gauges ................................................. 91, 96
Glove box ................................................. 351
Glove box light ....................................... 351
Head restraints ......................................... 171
Headlight cleaner................................. 233
Headlights ............................................... 225
Automatic High Beam system ..................................................228
Light switch ........................................... 225
Replacing light bulbs ........................439
Heaters Air conditioning system ..................333
Heated steering wheel ....................344
Outside rear view mirrors ............ 338
Seat heaters ..........................................345
Hill-start assist control ..........................312
Hood .......................................................... 393 Open ........................................................393
Hooks Cargo hooks ....................................... 353
Coat hooks .......................................... 358
Retaining hooks (floor mat) .............30
Horn ............................................................. 175 I/M test ..................................................... 390
Identification
Engine .....................................................538
Vehicle .................................................... 537
Ignition switch (engine switch) ........207
Illuminated entry system ................... 348
Immobilizer system ................................. 79
Indicators .....................................................87
Initialization Maintenance ........................... 385, 403
Meter .................................................. 111, 129
Moon roof ...............................................187
Multi-information display.......... 111, 129
Power windows................................... 183
Tire pressure warning system ................................. 413
Initiators (tire pressure warning system) .................................. 418
Inside rear view mirror......................... 176
Instrument panel light control ............................................ 94, 100
Intercooler .............................................. 406
Intercooler coolant.............................. 404 Capacity................................................. 544
Checking ...............................................405
Preparing and checking before winter ........................320, 320
Interior lights .......................................... 348
Intuitive parking assist ........................ 280
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