change key battery Lexus CT200h 2012 Owner's Manual (in English)

72
1-3. Opening, closing and locking the doors
CT200h_OM_OM76067E_(EE)
To operate the system properly
Make sure to carry the electronic key when operating the system. Do not get
the electronic key too close to the vehicle when operating the system from
the outside of the vehicle.
Depending on the position and holding condition of the electronic key, the
key may not be detected correctly and the system may not operate properly.
(The alarm may go off accidentally, or the door lock prevention may not
operate.)
If the smart entry & start system does not operate properly
Locking and unlocking the doors: Use the mechanical key. (P. 630)
Starting the hybrid system: P. 6 3 1
Electronic key battery depletion
P. 8 7
When the electronic key battery is fully depleted
P. 5 2 7
Customization
Settings (e.g. smart entry & start system) can be changed.
(Customizable features P. 667)

81
1-3. Opening, closing and locking the doors
1
Before driving
CT200h_OM_OM76067E_(EE)
Conditions affecting operation
P. 8 6
Electronic key battery depletion
P. 8 7
To operate the system properly
Make sure to carry the electronic key when operating the system.
Depending on the position and holding condition of the electronic key, the
key may not be detected correctly and the system may not operate properly.
(The alarm may go off accidentally, or the door lock prevention may not
function.)
Note for the push-button start system
Even when the electronic key is within the effective range (detection
areas), the system may not operate properly.
For example, the electronic key is on the instrument panel, luggage
cover, floor or in the glove box when the hybrid system is started or
“POWER” switch modes are changed.
Even if the electronic key is not inside the vehicle, it may be possible to
start the hybrid system if the electronic key is near the window.

82
1-3. Opening, closing and locking the doors
CT200h_OM_OM76067E_(EE)
Alarms and warning messages
An interior alarm is used to prevent theft of the vehicle and unforeseeable
accidents resulting from erroneous operation. Take appropriate measures
according to the warning message shown on the multi-information display.
(P. 578)
The following table describes circumstances and correction procedures
when only alarms are sounded.
If the push-button start system does not operate properly
P. 6 3 1
When the electronic key battery is fully depleted
P. 5 2 7
Customization
Settings (e.g. push-button start system) can be changed.
(Customizable features P. 667)
AlarmSituationCorrection procedure
Interior alarm
pings repeatedly
The “POWER” switch was
turned to ACCESSORY
mode while the driver’s
door was open (The
driver’s door was opened
when the “POWER”
switch was in ACCES-
SORY mode)
Turn the “POWER”
switch off and close
the driver’s door.

87
1-3. Opening, closing and locking the doors
1
Before driving
CT200h_OM_OM76067E_(EE)
If the wireless remote control does not operate properly
Locking and unlocking the doors: Use the mechanical key. (P. 630)
Electronic key battery depletion
The standard battery life is 1 to 2 years. (The card key battery life is
about a year and a half.)
If the battery becomes low, an alarm will sound in the cabin when the
hybrid system stops. (P. 590)
As the electronic key always receives radio waves, the battery will
become depleted even if the electronic key is not used. The following
symptoms indicate that the electronic key battery may be depleted.
Replace the battery when necessary. (P. 527)
• The smart entry & start system or the wireless remote control does not
operate.
• The detection area becomes smaller.
• The LED indicator on the key surface does not turn on.
To avoid serious deterioration, do not leave the electronic key within 1 m
(3 ft.) of the following electrical appliances that produce a magnetic
field:
•TVs
• Personal computers
• Cellular phones, cordless phones and battery chargers
• Recharging cellular phones or cordless phones
• Induction cookers
• Table lamps
When the electronic key battery is fully depleted
P. 5 2 7
Customization
Settings (e.g. door unlocking function) can be changed.
(Customizable features P. 667)

202
2-1. Driving procedures
CT200h_OM_OM76067E_(EE)
If the “READY” indicator does not come on
If the “READY” indicator does not come on when you press the “POWER”
switch with the shift position in P and the brake pedal depressed, contact
any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional immediately.
If the hybrid system is malfunctioning
P. 5 7 3
If the electronic key battery is depleted
P. 5 2 7
Operation of the “POWER” switch
When operating the “POWER” switch, one short, firm press is enough.
If the switch is pressed improperly, the hybrid system may not start or
the “POWER” switch mode may not change. It is not necessary to press
and hold the switch.
If attempting to restart the hybrid system immediately after turning the
“POWER” switch off, the hybrid system may not start in some cases.
After turning the “POWER” switch off, please wait a few seconds before
restarting the hybrid system.
Automatically P position selection function
P. 2 1 3
When the P position control system malfunctions
The “POWER” switch will not be able to be turned off. In such a case, the
switch can be turned off after applying the parking brake.
Have the vehicle inspected by any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional immediately.

447
3-5. Using the interior lights
3
Interior features
CT200h_OM_OM76067E_(EE)
Rear interior light
Turns the light on
Turns the door position on
*
*:
When the personal/interior
light main switch is in the off
position, the rear interior
light will not turn on even if
the door is opened with the
rear interior light switch in
door position.
Illuminated entry system
The lights automatically turn on/off according to “POWER” switch mode,
the presence of the electronic key, whether the doors are locked/unlocked,
and whether the doors are opened/closed.
To prevent 12-volt battery discharge
If the interior lights remain on when the door is not fully closed and the inte-
rior light switch (door position on/off) is on, the lights will go off automati-
cally after 20 minutes.
Customization
Settings (e.g. the time elapsed before the lights turn off) can be changed.
(Customizable features P. 667)
Rear interior light

632
5-2. Steps to take in an emergency
CT200h_OM_OM76067E_(EE)
Stopping the hybrid system
Set the parking brake, shift the shift position to P and press the “POWER”
switch as you normally do when stopping the hybrid system.
Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the
electronic key battery be replaced immediately when the battery is depleted.
(P. 527)
Alarm (if equipped)
Using the mechanical key to lock the doors will not set the alarm system.
If a door is unlocked using the mechanical key when the alarm system is set,
the alarm may be triggered. (P. 142)
Changing “POWER” switch modes
Within 10 seconds of the buzzer sounding, release the brake pedal and press
the “POWER” switch.
The hybrid system does not start and modes will be changed each time the
switch is pressed.(P. 200)

636
5-2. Steps to take in an emergency
CT200h_OM_OM76067E_(EE)
Starting the hybrid system when the 12-volt battery is discharged
The hybrid system cannot be started by push-starting.
To prevent 12-volt battery discharge
Turn off the headlights and the audio system while the hybrid system is
off.
Turn off any unnecessary electrical components when the vehicle is run-
ning at a low speed for an extended period, such as in heavy traffic.
When the 12-volt battery is removed or discharged
The hybrid system may not start. (P. 5 1 1 )
If the 12-volt battery discharges while the shift position is in P, it may not
be possible to shift the shift position to other positions. In this case, the
vehicle cannot be towed without lifting both front wheels because the
front wheels will be locked. (P. 563)
When the 12-volt battery is reconnected, start the hybrid system and
confirm that the shift position can be changed to each position using the
shift position indicator.
Make sure that the key is not inside the vehicle when recharging or
replacing the 12-volt battery. The key may be locked in the vehicle if the
alarm is activated. (P. 142)
Charging the 12-volt battery
The electricity stored in the 12-volt battery will discharge gradually even
when the vehicle is not in use, due to natural discharge and the draining
effects of certain electrical appliances. If the vehicle is left for a long time,
the 12-volt battery may discharge, and the hybrid system may be unable to
start. (The 12-volt battery recharges automatically while the hybrid system
is operating.)