2018 LEXUS RC350 engine

612
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
What to do if... (Troubleshooting)
What to do if... (Troubleshooting)
●If you lose your mechanical keys, ne
w genuine mechanical keys can be made
by your Lexus dealer. ( P. 142)
●If you lose your electronic keys, the risk of vehicle theft increases significantly.
Contact your Lexus dealer immediately. ( P. 144)
●Is the electronic key battery weak or depleted? ( P. 427)
●Is the engine switch in IGNITION ON mode?
When locking the doors, turn the engine switch off. (P. 208)
●Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the electronic key on your
person.
●The function may not operate properly du e to the condition of the radio wave.
( P. 158)
●The function to prevent the electronic key from being left inside the trunk will
operate and you can open th e trunk as usual. Take the key out from the trunk.
( P. 153)
If you have a problem, check the foll owing before contacting your Lexus
dealer.
The doors cannot be locked, unlocked, opened or closed
You lose your keys
The doors cannot be locked or unlocked
The trunk lid is closed with the electronic key left inside

613What to do if... (Troubleshooting)
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
●Did you press the engine switch while firmly depressing the brake pedal?
( P. 207)
●Is the shift lever in P? ( P. 210)
●Is the electronic key anywhere detectable inside the vehicle? ( P. 156)
●Is the steering wheel unlocked? ( P. 210)
●Is the electronic key battery weak or depleted?
In this case, the engine can be started in a temporary way. (P. 520)
●Is the battery discharged? ( P. 522)
●Is the engine switch in IGNITION ON mode?
If you cannot release the shift lever by depressing the brake pedal with the
engine switch in IGNITION ON mode. ( P. 219)
●It is locked automatically to prevent theft of the vehicle. ( P. 210)
●Is the window lock switch pressed?
The power window except for the one at the driver’s seat cannot be operated
if the window lock switch is pressed. ( P. 182)
●The auto power off function will be operated if the vehicle is left in ACCES-
SORY or IGNITION ON mode (the engine is not running) for a period of
time. (P. 210)
If you think something is wrong
The engine does not start
The shift lever cannot be shifted from P even if you depress the brake
pedal
The steering wheel cannot be turned after the engine is stopped
The windows do not open or close by operating the power window
switches
The engine switch is turned off automatically

614What to do if... (Troubleshooting)
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
●The seat belt reminder light is flashing
Are the driver and the front passe nger wearing the seat belts? (P. 455)
●The parking brake indicator is on
Is the parking brake released? ( P. 222)
Depending on the situation, other types of warning buzzer may also sound.
( P. 453, 460)

●Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds. ( P. 80)
Do one of the following to de activate or stop the alarms:
• Unlock the doors.
• Open the trunk using the entry function or wireless remote control.
• Turn the engine switch to ACCESSORY or IGNITION ON mode, or start the
engine.
●Is the electronic key left inside the vehicle or the moon roof opened?
Check the message on the multi-information display. ( P. 460)
●When a warning light turns on or a warning message is displayed, refer to
P. 453, 460.A warning buzzer sounds during driving
An alarm is activated and the horn sounds
A warning buzzer sounds when leaving the vehicle
A warning light turns on or a warning message is displayed

619Alphabetical index
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
Cleaning......................................... 376, 381
Aluminum wheels .............................. 377
Exterior....................................................376
Interior ...................................................... 381
Seat belts ............................................... 382
Clock ......................................................... 355
Coat hooks..............................................358
Compass .................................................. 366
Condenser .............................................. 406
Console box ............................................ 351
Cooling system ..................................... 404 Engine overheating...........................526
Cruise control Dynamic radar cruise control..... 268
Cup holders ............................................ 352
Current fuel consumption ....... 108, 122
Curtain shield airbags ........................... 40
Customizable features ....................... 569 Daytime running light system...........226
Defogger
Outside rear view mirrors ............338
Rear window........................................338
Windshield............................................338
Differential Front differential .................................545
Rear differential................................... 546
Dimension ............................................... 536
Dinghy towing ....................................... 206
Display Drive information...................... 108, 122
Dynamic radar cruise control .....268
LDA (Lane Departure Alert with steering control) ................... 265
Multi-information display....... 103, 118
Warning message.............................460
Distance ...........................................108, 122
Do-it-yourself maintenance............... 391
Door courtesy lights Location ................................................. 347
Door lock Doors.........................................................145
Smart access system with push-button start ..............................156
Wireless remote control..................140D

621Alphabetical index
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
Emergency, in case of
If a warning buzzer sounds...........453
If a warning light turns on...............453
If a warning message is displayed ....................................... 460
If the electronic key does not operate properly ......... 518
If the engine will not start................. 516
If the vehicle battery is discharged ......................................... 522
If you have a flat tire .............489, 502
If you think something is wrong................................................ 451
If your vehicle becomes stuck .....532
If your vehicle has to be stopped in an emergency ..........443
If your vehicle needs to be towed ....................................... 444
If your vehicle overheats ................526
Engine ....................................................... 539 ACCESSORY mode..................... 208
Compartment......................................397
Engine switch .......................................207
Hood ........................................................393
How to start the engine ..................207
Identification number ...................... 538
If the engine will not start................. 516
Ignition switch (engine switch)....207
Overheating .........................................526 Engine coolant ...................................... 404
Capacity................................................. 544
Checking ............................................... 404
Preparing and checking before winter ........................320, 320
Engine coolant temperature gauge ..................................................91, 96
Engine immobilizer system .................. 79
Engine oil ................................................. 400 Capacity.................................................540
Checking .............................................. 400
Preparing and checking before winter ........................320, 320
Engine oil maintenance data ........... 403
Engine oil temperature gauge............96
Engine switch ..........................................207
Enhanced VSC ....................................... 312
EPS (Electric Power Steering) ......... 313 Warning light ....................................... 454
Event data recorder (EDR)................... 10
Expert mode ............................................ 316

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
G
H
I

624Alphabetical index
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
Jack
Positioning a floor jack ....................394
Vehicle-equipped jack ......489, 502
Jack handle ................................. 489, 502
Jam protection function Front seats .............................................. 162
Moon roof .............................................. 187
Power windows ................................... 183 Keyless entry
Smart access system with push-button start........... 145, 151
Wireless remote control......... 145, 151
Keys ............................................................. 140 Battery-saving function ................... 158
Electronic key ........................................140
Engine switch ...................................... 207
If the electronic key does not operate properly ......... 518
Key number plate ................................140
Keyless entry ..........................................140
Mechanical key.......................................141
Replacing the battery .......................427
Warning buzzer...................................146
Wireless remote control..................140
Knee airbags ............................................. 40
JK

627Alphabetical index
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
Odometer ........................................... 91, 96
Oil
Engine oil............................................... 540
Front differential oil........................... 545
Rear differential oil ............................ 546
Opener Hood ........................................................393
Trunk ........................................................... 151
Outer foot lights.................................... 347
Outside rear view mirrors ..................178 Adjusting and folding........................ 178
Blind spot monitor............................ 290
Linked mirror function when reversing ..................................179
Mirror position memory .................. 166
Outside rear view mirror defoggers ........................... 338
Outside temperature...................... 91, 96
Overheating ........................................... 526 Paddle shift switches................... 215, 216
Parking assist sensors
(intuitive parking assist).................. 280
Parking brake .........................................222
Parking lights ..........................................225 Light switch........................................... 225
Replacing light bulbs ....................... 439
PCS (Pre-Collision System)............ 250 Warning light ....................................... 454
Personal lights ....................................... 349
Pop-up display ................................. 111, 129
Power outlet ........................................... 355
Power steering (Electric power steering system) .................................. 313 Warning light ....................................... 454
Power windows....................................... 182 Door lock linked window operation ...........................184
Jam protection function................... 183
Operation................................................182
Window lock switch ..........................182
Pre-Collision System (PCS)............ 250 Warning light ....................................... 454
OP
*: Refer to the “NAVIGATIO N AND MULTIMEDIA SYSTEM
OWNER’S MANUAL”.