2017 LEXUS RC F key battery

1533-2. Opening, closing and locking the doors and trunk
3
Operation of each component
■Alarms and warning indicators
An alarm sounds and warning messages are displayed on the multi-information display
to protect against unexpected accidents or th eft of the vehicle resulting from erroneous
operation. When a warning me ssage is displayed, take appropriate measures based on
the displayed message. ( →P. 571)
When only an alarm sounds, circumstances and correction procedures are as follows.
■Battery-saving function
The battery-saving function w ill be activated in order to prevent the electronic key bat-
tery and the vehicle battery from being discharged while the vehicle is not in operation
for a long time.
●In the following situations, the smart acce ss system with push-button start may take
some time to unlock the doors.
• The electronic key has been left within appr oximately 6 ft. (2 m) of the outside of the
vehicle for 10 minutes or longer.
• The smart access system with push-button start has not been used for 5 days or lon-
ger.
●If the smart access system with push-button start has not been used for 14 days or lon-
ger, the doors cannot be unlocked at the passe nger door. In this case, hold the driver’s
door handle, or use the wireless remote cont rol or mechanical key, to unlock the doors.
AlarmSituationCorrection procedure
Exterior alarm sounds
once for 5 seconds
The trunk was closed while
the electronic key was still
inside the trunk and both
side doors were locked.Retrieve the electronic key
from the trunk and close
the trunk lid.
An attempt was made to
lock the vehicle while a
door was open.Close both side doors and
lock the doors again.
Interior alarm sounds con-
tinuously
The engine switch was
turned to ACCESSORY
mode while the driver’s
door was open (or the
driver’s door was opened
while the engine switch
was in ACCESSORY
mode).
Turn the engine switch off
and close the driver’s door.
The engine switch was
turned off while the driver’s
door was open.
Close the driver’s door.

1543-2. Opening, closing and locking the doors and trunk
■Electronic Key Battery-Saving Function
When battery-saving mode is set, battery depletion is minimized by stopping the elec-
tronic key from receiving radio waves.
■Conditions affecting operation
The smart access system with push-button st art uses weak radio waves. In the following
situations, the communication between the electronic key and the vehicle may be
affected, preventing the smar t access system with push-but ton start, wireless remote
control and engine immobilizer system from operating properly.
(Ways of coping: →P. 622)
●When the electronic key battery is depleted
●Near a TV tower, electric power plant, gas st ation, radio station, large display, airport or
other facility that generates strong radio wave s or electrical noise
●When carrying a portable radio, cellular phone, cordless phone or other wireless com-
munication device
●When the electronic key is in contact wi th, or is covered by the following metallic
objects
• Cards to which aluminum foil is attached
• Cigarette boxes that have aluminum foil inside
• Metallic wallets or bags
•Coins
• Hand warmers made of metal
• Media such as CDs and DVDs
●When other wireless keys (that emit radio waves) are being used nearby
●When carrying the electronic key together with the following devices that emit radio
waves
• Another vehicle’s electronic key or a wireless key that emits radio waves
• Personal computers or person al digital assistants (PDAs)
• Digital audio players
• Portable game systems
●If window tint with a metallic content or me tallic objects are attached to the rear win-
dow
●When the electronic key is placed near a battery charger or electronic devices
Press twice while pressing and holding
. Confirm that the electronic key indica-
tor flashes 4 times.
While the battery-saving mode is set, the smart
access system with push -button start cannot be
used. To cancel the function, press any of the
electronic key buttons.

1553-2. Opening, closing and locking the doors and trunk
3
Operation of each component
■Note for the entry function
●Even when the electronic key is within the effective range (detection areas), the system
may not operate properly in the following cases:
• The electronic key is too close to the window or outside door handle, near the ground, or in a high place when the doors are locked or unlocked.
• The electronic key is near the ground or in a high place, or too close to the rear
bumper center when the trunk is opened.
• The electronic key is on th e instrument panel, rear pack age tray or floor, or in the
door pockets or glove box when the engine is started or engine switch modes are
changed.
●Do not leave the electronic key on top of th e instrument panel or near the door pockets
when exiting the vehicle. Depending on the radio wave reception conditions, it may be
detected by the antenna outside the cabin an d the doors will become lockable from the
outside, possibly trapping the electronic key inside the vehicle.
●As long as the electronic key is within th e effective range, the doors may be locked or
unlocked by anyone. However, only the door s detecting the electronic key can be used
to unlock the vehicle.
●Even if the electronic key is not inside the vehicle, it may be possible to start the engine
if the electronic key is near the window.
●The doors may unlock or lock if a large amou nt of water splashes on the door handle,
such as in the rain or in a car wash, when th e electronic key is within the effective range.
(The doors will automatically be locked af ter approximately 60 seconds if the doors
are not opened and closed.)
●If the wireless remote control is used to lo ck the doors when the electronic key is near
the vehicle, there is a possibility that the d oor may not be unlocked by the entry func-
tion. (Use the wireless remote control to unlock the doors.)
●Touching the door lock or unlock sensor while wearing gloves may prevent lock or
unlock operation.
●When the lock operation is performed using the lock sensor, recognition signals will be
shown up to two consecutive times. After this, no recognition signals will be given.
●If the door handle becomes wet while the el ectronic key is within the effective range,
the door may lock and unlock repeatedly. In this case, follow the following correction
procedures to wash the vehicle:
• Place the electronic key in a location 6 ft. (2 m) or more away from the vehicle. (Take care to ensure that the key is not stolen.)
• Set the electronic key to battery-saving mode to disable the smart access system with push-button start. ( →P. 154)
●If the electronic key is inside the vehicle and a door handle becomes wet during a car
wash, a message may be shown on the mult i-information display and a buzzer will
sound outside the vehicle. To turn of f the alarm, lock both side doors.
●The lock sensor may not work properly if it comes into contact with ice, snow, mud, etc.
Clean the lock sensor and attempt to operate it again.
●A sudden handle operation or a handle operation immediately after entering the effec-
tive range may prevent the doors from bein g unlocked. Touch the door unlock sensor
and check that the doors are unlocked before pulling the door handle again.
●Unlocking the vehicle may take more time if another electronic key is within the effec-
tive range.

1853-5. Opening, closing the windows and moon roof
3
Operation of each component
■Door lock linked window operation
●The power windows can be opened and closed using the mechanical key.*(→ P. 623)
●The power windows can be opened using the wireless remote control.* (→ P. 141)
*: These settings must be cust omized at your Lexus dealer.
■When the battery is disconnected
The window lock switch is disabled. If nece ssary, press the window lock switch after
reconnecting the battery.
■Power windows open warning buzzer
The buzzer sounds and a message is shown on the multi-information display in the instru-
ment cluster when the engine switch is turned off and the driver’s door is opened with the
power windows open.
■Customization
Settings (e.g. linked door lock operation) can be changed.
(Customizable features: →P. 673)

2104-2. Driving procedures
■Auto power off function
If the vehicle is left in ACCESSORY mode for more than 20 minutes or IGNITION ON
mode (the engine is not running) for more than an hour with the shift lever in P, the engine
switch will automatically turn off. However, this function cannot entirely prevent battery
discharge. Do not leave the vehicle with the engine switch in ACCESSORY or IGNI-
TION ON mode for long periods of ti me when the engine is not running.
■Electronic key battery depletion
→P. 139
■Conditions affe cting operation
→ P. 154
■Notes for the entry function
→P. 155
■If the engine does not start
●Check that the shift lever is se curely set in P. The engine may not start if the shift lever is
displaced out of P.
●The engine immobilizer system ma y not have been deactivated. (→P. 79)
Contact your Lexus dealer.
■Steering lock
After turning the engine switch off and opening and closing the doors, the steering wheel
will be locked due to the steering lock func tion. Operating the engine switch again auto-
matically cancels the steering lock.
■When the steering lock cannot be released
■Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, operation of the motor may be sus-
pended if the engine is turned on and off repeat edly in a short period of time. In this case,
refrain from operating the engine switch. After about 10 seconds, the steering lock
motor will resume functioning.
■When “Check Access System with Elec. Key” is displayed on the multi-information dis-
play
The system may be malfunctio ning. Have the vehicle inspected by your Lexus dealer
immediately.
■If the electronic key battery is depleted
→ P. 538
“Steering Lock active” will be displayed on the
multi-information display.
Check that the shift leve
r is in P. Press the
engine switch while turn ing the steering wheel
left and right.

4506-2. Using the interior lights
Turns the lights on/off (touch the lights)
●Illuminated entry system: The lights automatically turn on/off according to engine
switch mode, the presence of the electronic key, whether the doors are locked/
unlocked, and whether the doors are opened/closed.
●If the interior lights remain on when the engine switch is turned off, the lights will go off
automatically after 20 minutes.
●In the following cases, the front interior lights and personal lights may not respond as
normal.
• When water, dirt, etc., have adhered to the lens surface
• When operated with a wet hand
• When wearing gloves, etc.
●Setting (e.g. the time elapsed before lights turn off) can be changed.
(Customizable features: → P. 682)
Personal lights
NOTICE
●Never remove the lens for the front interior light and personal lights. Otherwise, the
lights will be damaged.
●To prevent battery discharge, do not leave the lights on longer than necessary when
the engine is off.

479
Maintenance and care7
7-1. Maintenance and careCleaning and protecting the vehicle exterior ............... 480
Cleaning and protecting the vehicle interior..................485
7-2. Maintenance Maintenance requirements ........................... 488
General maintenance............... 491
Emission inspection and maintenance (I/M)
programs .................................... 494
7-3. Do-it-yourself maintenance Do-it-yourself service precautions................................ 495
Hood ............................................... 497
Positioning a floor jack ............498
Engine compartment ................ 501
Tires ...................................................517
Tire inflation pressure................ 531
Wheels ........................................... 534
Air conditioning filter ............... 536
Electronic key battery ..............538
Checking and replacing fuses ..............................................540
Light bulbs..................................... 543

4817-1. Maintenance and care
7
Maintenance and care
■Automatic car washes (vehicles with CFRP parts)
Do not use automatic car washes as they may scratch the CFRP parts and damage the
paint.
■High pressure car washes
●Do not allow the nozzles of the car wash to come within close proximity of the windows.
●Before using the car wash, check that the fuel filler door on your vehicle is closed prop-
erly.
■When using a car wash
If the door handle becomes wet while the electronic key is within the effective range, the
door may lock and unlock repeatedly. In that case, follow the following correction proce-
dures to wash the vehicle:
●Place the key in a position 6 ft. (2 m) or more separate from the vehicle while the vehi-
cle is being washed. (Take care to ensure that the key is not stolen.)
●Set the electronic key to battery-saving mode to disable the sm art access system with
push-button start. ( →P. 154)
■Aluminum wheels
●Remove any dirt immediately by using a neut ral detergent. Do not use hard brushes or
abrasive cleaners. Do not use stro ng or harsh chemical cleaners.
Use the same mild detergent and wax as used on the paint.
●Do not use detergent on the wheels when they are hot, for example after driving a long
distance in hot weather.
●Wash detergent from the wheels immediately after use.
■Brake
●Painted brake calipers (if equipped)
• When using detergent, use ne utral detergent. Do not use hard brushes or abrasive
cleaners, as they will damage the paint.
• Do not use detergent on the brake calipers when they are hot.
• Wash detergent off immediately after use.
●RC F: Rust may form if the vehicle is parked with wet brake pads or disc rotors, causing
them to stick. Before parking the vehicle after it is washed, drive slowly and apply the
brakes several times to dry the parts.
■Bumpers
Do not scrub with abrasive cleaners.
■Side windows water-repelle nt coating (if equipped)
●The following precautions can extend the effectiveness of the water-repellent coating.
• Remove any dirt, etc. from the side windows regularly.
• Do not allow dirt and dust to accumulate on the windows for a long period.
Clean the windows with a soft, damp cloth as soon as possible.
• Do not use wax or glass cleaners that co ntain abrasives when cleaning the windows.
• Do not use any metallic objects to remove condensation build up.
●When the water-repellent performance has become insufficient, the coating can be
repaired. Contact your Lexus dealer.