Page 518 of 636
5187-2. Steps to take in an emergency
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
Use the mechanical key (P. 141) in order to perfor m the following operations:
■Unlocking the door
Insert the mechanical key while
pulling on the driver’s door han-
dle.
Unlocking the door.
Remove the key, return the handle, and then pull the handle again.
If the electronic key does not operate properly
If communication between the electron ic key and vehicle is interrupted (P.
158) or the electronic key cannot be used because the battery is depleted,
the smart access system with push-button start and wireless remote control
cannot be used. In such cases, the doors and trunk can be opened and the
engine can be started by following the procedure below.
Locking and unlocking the doors and opening the trunk
1
2
3
Page 519 of 636
5197-2. Steps to take in an emergency
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
7
When trouble arises
■Locking the door
Move the inside lock button to the
lock position.
Close the door.
■Opening the trunk
Turn the mechanical key clockwise
to open. ( P. 81)
■Key linked functions
*: These settings must be cust omized at your Lexus dealer.
1
2
Locks both side door
Closes the windows and moon roof (if
equipped) (turn and hold)
*
Unlocks the door
Turning the key rearward unlocks the driver’s
door. Turning the key again unlocks the other
door.
Opens the windows and moon roof (if
equipped) (turn and hold)
*
1
22
33
44
Page 553 of 636
5538-1. Specifications
8
Vehicle specifications
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
Light bulbs
Light bulbsBulb No.WType
Exterior
Front turn signal lights (bulb type)7444NA28/8A
Rear turn signal lights21A
Back-up lights92116B
Interior
Vanity lights8B
Footwell lights1943.8B
Trunk light5B
A: Wedge base bulbs (amber)
B: Wedge base bulbs (clear)
Page 571 of 636

5718-2. Customization
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
8
Vehicle specifications
■Door lock (P. 145, 151, 518)
■Smart access system with push-button start and wireless remote control
( P. 145, 151)
FunctionDefault settingCustomized setting
Unlocking using a mechanical
key
Driver’s door
unlocked in one
step, both side
doors unlocked in two stepsBoth side doors
unlocked in one step
—O
Automatic door lockShifting the shift
lever to position
other than P
Off
OOVehicle speed is
approximately 12
mph (20 km/h) or higher
Automatic door unlockShifting the shift
lever to POff
OODriver’s door is opened
Locking/unlocking of the trunk
when both side doors are
locked/unlocked
OnOff—O
12
FunctionDefault settingCustomized setting
Operation buzzer volume5OffOO1 to 7
Operation signal (Emergency
flashers)OnOffOO
Time elapsed before automatic
door lock function is activated if
door is not opened after being
unlocked
60 seconds
Off
OO30 seconds
120 seconds
Open door warning buzzerOnOff—O
Welcome light illumination con-
trolOnOffOO
12
Page 572 of 636
5728-2. Customization
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
■Smart access system with push-button start ( P. 145, 151, 156)
■Wireless remote control ( P. 140, 145, 151)
■Driving position memory* ( P. 166)
*: If equipped
FunctionDefault settingCustomized setting
Smart access system with push-
button startOnOff—O
Smart door unlockingDriver’s doorBoth side doorsOO
Number of consecutive door
lock operations2 timesAs many as desired—O
12
FunctionDefault settingCustomized setting
Wireless remote controlOnOff—O
Unlocking operation
Driver’s door
unlocked in one step, both side
doors unlocked in two steps
Both side doors
unlocked in one
stepOO
Trunk unlocking operationPress and hold (short)
One short press
—O
Push twice
Press and hold (long)
Off
Alarm (panic mode)OnOff—O
12
FunctionDefault settingCustomized setting
Selecting the door linking driving
position memory with door
unlock operation
Driver’s doorBoth side doors—O
12
Page 612 of 636

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
Page 614 of 636

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
Page 618 of 636

618Alphabetical index
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
Card key ................................................... 140
Care ................................................. 376, 381
Aluminum wheels .............................. 377
Exterior....................................................376
Interior ...................................................... 381
Seat belts ............................................... 382
Cargo capacity...................................... 204
Cargo hooks .......................................... 353
Chains ............................................ 322, 322
Child restraint system............................ 58 Child seats definition .......................... 58
Child seats installation ................. 65, 71
Front passenger occupant classification system ...........................51
Installing a CRS to the passenger seat............................ 62
Installing a CRS to the rear seat............................................................ 64
Installing CRS with LATCH anchors ..................... 72
Installing CRS with seat belts ..........65
Installing CRS with top tether strap ......................... 76 Child safety ................................................. 57
Airbag precautions...............................42
Battery precautions ............... 410, 525
Child restraint system......................... 58
How your child should wear the seat belt .......................................... 36
Installing child restraints .................... 58
Moon roof precautions ................... 189
Power window lock switch.............182
Power window precautions .......... 185
Removed electronic key battery precautions .............. 428
Seat belt extender precautions .......................................... 39
Seat belt precautions .......................... 38
Seat heater precautions ................. 344
Trunk precautions ...............................154
C