ignition LEXUS RC350 2016 Repair Manual

6068-2. Steps to take in an emergency
RC350_RC300_RC200t_RC F_U (OM24671U)
Start the engine of the second vehicle. Increase the engine speed slightly and
maintain at that level for approximately 5 minutes to recharge the battery of
your vehicle.
Open and close any of the door of your vehicle with the engine switch off.
Maintain the engine speed of the second vehicle and start the engine of your
vehicle by turning the engine switch to IGNITION ON mode.
Once the vehicle’s engine has started, remove the jumper cables in the exact
reverse order from which they were connected.
Once the engine starts, have the vehicle inspected at your Lexus dealer as soon
as possible.
■Starting the engine when the battery is discharged
The engine cannot be started by push-starting.
■To prevent battery discharge
●Turn off the headlights and the audio system while the engine is off.
●Turn off any unnecessary electrical components when the vehicle is running at a low
speed for an extended period, such as in heavy traffic.
■Charging the battery
The electricity stored in the battery will discharge gradually even when the vehicle is not
in use, due to natural discharg e and the draining effects of certain electrical appliances. If
the vehicle is left for a long time, the battery may discharge, and the engine may be
unable to start. (The battery recharges automatically during driving.)
■When recharging or replacing the battery
●In some cases, it may not be possible to unlock the doors using the smart access system
with push-button start when the battery is discharged. Use the wireless remote control
or the mechanical key to lock or unlock the doors.
●The engine may not start on the first attempt after the battery has recharged but will
start normally after the second attempt. This is not a malfunction.
●The engine switch mode is memorized by the vehicle. When the battery is recon-
nected, the system will return to the mode it was in before the battery was discharged.
Before disconnecting the battery, turn the engine switch off.
If you are unsure what mode the engine switch was in before the battery discharged, be
especially careful when reconnecting the battery.
5
6
7
8

6269-1. Specifications
RC350_RC300_RC200t_RC F_U (OM24671U)
■Spark plug
Cooling system
Capacity
RC350/
RC30010.1 qt. (9.6 L, 8.4 Imp. qt.)
RC200t
Gasoline engine
8.5 qt. (8.0 L, 7.0 Imp. qt.)
Intercooler
3.3 qt. (3.1 L, 2.7 Imp. qt.)
RC F12.3 qt. (11.6 L, 10.2 Imp. qt.)
Coolant type
Use either of the following:
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based non-sili- cate, non-amine, non-nitrite, and non-borate coolant
with long-life hybrid organic acid technology
Do not use plain water alone.
Ignition system
RC350/RC300RC200tRC F
MakeDENSO
FK20HBR11NGK DILFR7K9GDENSO
FK20HBR-J8
Gap0.043 in. (1.1 mm)0.035 in. (0.9 mm)0.031 in. (0.8 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
Electrical system
Battery
Open voltage at 68F
(20 C):12.6  12.8 V Fully charged
12.2
 12.4 V Half charged
11.8
 12.0 V Discharged
(Check the voltage 20 minutes after the engine and all
lights are turned off.)
Charging rates5 A max.

6619-2. Customization
9
Vehicle specifications
RC350_RC300_RC200t_RC F_U (OM24671U)
■Vehicle customization
●When the smart access system with push-button start is off, the entry unlock function
cannot be customized.
●When the doors remain closed after unlocking the doors and the timer activated auto-
matic door lock function activates, signals will be generated in accordance with the
operation buzzer volume and operational si gnal (Emergency flashers) function set-
tings.
●Some settings can be changed using a switch or the audio system screen. If a setting is
changed using a switch, the changed setting will not be reflected on the audio system
screen until the engine switch is turn ed off and then to IGNITION ON mode.
■When customizing using the Remote Touch or Lexus Display Audio controller
Stop the vehicle in a safe place, apply the parking brake, and shift the shift lever to P. Also,
to prevent battery discharge, leave the engi ne running while customizing the features.
WA R N I N G
■During customization
As the engine needs to be running during customization, ensure that the vehicle is
parked in a place with adequate ventilation. In a closed area such as a garage, exhaust
gases including harmful carbon monoxide (CO) may collect and enter the vehicle. This
may lead to death or a serious health hazard.
NOTICE
■During customization
To prevent battery discharge, ensure that the engine is running while customizing fea-
tures.

676
RC350_RC300_RC200t_RC F_U (OM24671U)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. 1 3 4 )
●If you lose your electronic keys, the risk of vehicle theft increases significantly.
Contact your Lexus dealer immediately. ( P. 1 3 6 )
●Is the electronic key battery weak or depleted? ( P. 5 1 7 )
●Is the engine switch in IGNITION ON mode?
When locking the doors, turn the engine switch off. ( P. 2 0 0 )
●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. 1 5 0 )
●The function to prevent the electronic ke y from being left inside the trunk will
operate and you can open the trunk as usual. Take the key out from the trunk.
( P. 1 4 5 )
If you have a problem, check the following 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

677What to do if... (Troubleshooting)
RC350_RC300_RC200t_RC F_U (OM24671U)
●Did you press the engine switch while firmly depressing the brake pedal?
(P. 1 9 9 )
●Is the shift lever in P? ( P. 2 0 2 )
●Is the electronic key anywhere detectable inside the vehicle? ( P. 1 4 8 )
●Is the steering wheel unlocked? ( P. 2 0 2 )
●Is the electronic key battery weak or depleted?
In this case, the engine can be started in a temporary way. (P. 6 0 2 )
●Is the battery discharged? ( P. 6 0 4 )
●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. 599)
●It is locked automatically to prevent theft of the vehicle. ( P. 2 0 2 )
●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. 1 74 )
●The auto power off function will be oper ated if the vehicle is left in ACCES-
SORY or IGNITION ON mode (the engine is not running) for a period of
time. ( P. 2 0 2 )
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

678What to do if... (Troubleshooting)
RC350_RC300_RC200t_RC F_U (OM24671U)
●The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat belts? ( P. 5 4 4 )
●The parking brake indicator is on
Is the parking brake released? ( P. 2 1 1 )
Depending on the situation, other type s of warning buzzer may also sound.
( P. 5 4 3 , 5 4 9 )

●Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds. ( P. 7 9 )
Do one of the following to de activate or stop the alarms:
• Unlock the doors or open the trunk.
• 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. 5 4 9 )
●When a warning light turns on or a warning message is displayed, refer to
P. 5 4 3 , 5 4 9 . 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

686Alphabetical index
RC350_RC300_RC200t_RC F_U (OM24671U)
Engine .........................................................621ACCESSORY mode..................... 200
Compartment ..................................... 485
Engine switch ........................................ 199
Hood ......................................................... 481
How to start the engine ................... 199
Identification number ...................... 620
If the engine will not start................597
Ignition switch (engine switch)..... 199
Overheating ........................................ 608
Engine coolant....................................... 493 Capacity .................................................626
Checking................................................493
Preparing and checking before winter ................................... 320
Engine coolant temperature gauge ................................................92, 98
Engine immobilizer system ..................76
Engine oil .................................................488 Capacity ................................................. 622
Checking............................................... 488
Preparing and checking before winter ................................... 320
Engine oil maintenance data .............491
Engine oil temperature gauge ........... 98
Engine switch ...........................................199
Enhanced VSC ..................................... 287
EPS (Electric Power Steering) .......288 Warning light .......................................544
Event data recorder (EDR) ...................10
Expert mode .............................................291 First-aid kit storage belt..................... 438
Flat tire
Vehicles with a spare tire .............. 570
Vehicles with emergency tire puncture repair kit .........................584
Floor mats................................................... 30
Fluid Automatic transmission .................. 627
Brake........................................................ 629
Washer .................................................. 500
Fog lights...................................................222 Replacing light bulbs ....................... 529
Switch .......................................................222
Footwell light ...........................................432 Wattage .................................................635
Front fog lights........................................222 Replacing light bulbs ....................... 529
Switch .......................................................222
Front passenger occupant classification system ........................... 50
Front seats ................................................. 155 Adjustment............................................. 155
Cleaning................................................. 469
Correct driving posture .....................32
Driving position memory................ 160
Head restraints .....................................164
Jam protection function....................156
Seat heaters ..........................................430
Seat position memory ...................... 160
Seat ventilators...................................... 431F

688Alphabetical index
RC350_RC300_RC200t_RC F_U (OM24671U)
I/M test ..................................................... 478
IdentificationEngine ..................................................... 620
Vehicle ..................................................... 619
Ignition switch (engine switch)..........199
Illuminated entry system .................... 434
Immobilizer system ..................................76
Indicators .................................................... 87
Initialization Maintenance.............................. 473, 491
Meter................................................. 110, 122
Moon roof ...............................................179
Multi-information display ........ 110, 122
Power windows ................................... 175
Tire pressure warning system............................... 502
Initiators (tire pressure warning system).................................508
Inside rear view mirror .........................169
Instrument panel light control............................................. 96, 103
Intercooler............................................... 495
Intercooler coolant .............................. 493 Capacity .................................................626
Checking................................................493
Preparing and checking before winter ................................... 320
Interior lights........................................... 433
Intuitive parking assist......................... 259 Jack
Positioning a floor jack.................... 482
Vehicle-equipped jack ...... 570, 584
Jack handle ..................................570, 584
Jam protection function Front seats ...............................................156
Moon roof ............................................... 179
Power windows.................................... 175
Keyless entry Smart access system with push-button start..........137, 143
Wireless remote control........137, 143
Keys ............................................................. 132 Battery-saving function ................... 150
Electronic key ........................................ 132
Engine switch ........................................199
If the electronic key does not operate properly ....... 600
Key number plate ................................ 132
Keyless entry .......................................... 132
Mechanical key..................................... 133
Replacing the battery ........................ 517
Warning buzzer.................................. 138
Wireless remote control.................. 132
Knee airbags ............................................. 40
IJ
K

695Alphabetical index
RC350_RC300_RC200t_RC F_U (OM24671U)
SwitchesActive rear wing switch ................... 315
ASC (Active Sound Control) switch...................................................... 212
Audio remote control switches ................................................ 331
Automatic High Beam system ...... 217
BSM (Blind spot monitor) switch................................................... 302
Cruise control switch...........235, 239
Door lock switches ............................ 139
Driving mode select switch ......... 283
Driving position memory switches ................................................ 160
Dynamic radar cruise control switch ...................................239
Emergency flashers switch ...........532
Engine switch ........................................ 199
Fog light switch ................................... 222
Garage door opener switches ...............................................444
Heated steering wheel switch.................................................... 429
Ignition switch ....................................... 199
Intuitive parking assist switch ...... 260
LDA (Lane Departure Alert) switch....................................................254
Light switches ........................................214
Meter control switches ............107, 114 Moon roof switches ...........................178
Outside rear view mirror
switches .................................................. 171
Paddle shift switches............207, 208
PCS OFF switch ................................ 296
Power door lock switch ...................139
Power window switches .................. 174
Rear window and outside rear view mirror defoggers
switch ................................................... 424
Seat heater switches ........................ 430
Seat ventilator switches .................... 431
Snow mode switch ........................... 206
“SOS” button .......................................455
Talk switch............................................. 393
Telephone switches.......................... 393
Tilt and telescopic steering control switch .................. 167
Tire pressure warning reset switch ...................................................503
Trunk opener main switch .............. 144
Trunk opener switch .......................... 143
TVD (Torque Vectoring Differential) switch .......................... 318
Vehicle-to-vehicle distance button ................................................... 243
VSC OFF switch ...............................289
Window lock switch .......................... 174
Windshield wiper and washer switch ......................... 223
Windshield wiper de-icer switch ................................................... 425