Page 138 of 688

1383-2. Opening, closing and locking the doors and trunk
GS350_250_OM_OM30E16E_(EE)
■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 engine stops.
(→ P. 5 74 )
●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 neces-
sary. ( →P. 4 8 9 )
• 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
• Table lamps
• Induction cookers
■When the electronic key battery is fully depleted
→ P. 4 8 9
■Customization
Settings (e. g. smart entry & start system) can be changed.
(Customizable features: →P. 650)
■If the smart entry & start system has been deactivated in a customized setting
●Locking and unlocking the doors and opening the trunk:
Use the wireless remote control or mechanical key. ( →P. 1 5 5 , 6 1 8 )
●Starting the engine and changing engine switch modes: →P. 6 1 9
●Stopping the engine: →P. 2 3 8
GS350_250_OM_OM30E16E_(EE).book Page 138 Tuesday, July 8, 201 4 7:11 PM
Page 190 of 688

1903-3. Adjusting the seats
GS350_250_OM_OM30E16E_(EE)
While pressing the recalled
button, press and hold the
door lock switch (either lock or
unlock) until the buzzer
sounds.
If the button could not be regis-
tered, the buzzer sounds continu-
ously for approximately 3 seconds.
■Recall procedureCarry the electronic key that has been registered to the driving posi-
tion, and then unlock and open the driver’s door using the smart
entry & start system or wireless remote control.
The driving position will move to the recorded position (not including the
steering wheel). However, the seat will move to a position slightly behind the
recorded position in order to make entering the vehicle easier.
If the driving position is in a position that has already been recorded, the seat
and outside rear view mirrors will not move.
Turn the engine switch to ACCESSORY mode or IGNITION ON
mode, or fasten a seat belt.
The seat and steering wheel will move to the recorded position.
4
1
2
GS350_250_OM_OM30E16E_(EE).book Page 190 Tuesday, July 8, 201 4 7:11 PM
Page 463 of 688

463 6-3. Do-it-yourself maintenance
6
Maintenance and care
GS350_250_OM_OM30E16E_(EE)
■Before recharging
When recharging, the battery produces hydrogen gas which is flammable and
explosive. Therefore, observe the following before recharging:
●If recharging with the battery installed on the vehicle, be sure to disconnect the
ground cable.
●Make sure the power switch on the charger is off when connecting and discon-
necting the charger cables to the battery.
■After recharging/reconnecting the battery
The engine may not start. Follow the procedure below to initialize the system.Shift the shift lever to P.
Open and close any of the doors.
Restart the engine.
●Unlocking the doors using the smart entry & start system may not be possible
immediately after reconnecting the battery. If this happens, use the wireless remote
control or the mechanical key to lock/unlock the doors.
●Start the engine with the engine switch in ACCESSORY mode. The engine may
not start with the engine switch turned off. However, the engine will operate nor-
mally from the second attempt.
●The engine switch mode is recorded by the vehicle. If the battery is reconnected,
the vehicle will return the engine switch mode to the status it was in before the bat-
tery was disconnected. Make sure to turn off the engine before disconnect the bat-
tery. Take extra care when connecting the battery if the engine switch mode prior
to discharge is unknown.
If the engine will not start even after multiple attempts at both methods, contact any
authorized Lexus dealer or repairer, or another duly qualified and equipped profes-
sional.
1
2
3
GS350_250_OM_OM30E16E_(EE).book Page 463 Tuesday, July 8, 201 4 7:11 PM
Page 490 of 688
4906-3. Do-it-yourself maintenance
GS350_250_OM_OM30E16E_(EE)
Remove the depleted battery.
Insert a new battery with the “+” termi-
nal facing up.
■Use a CR2032 lithium battery
●Batteries can be purchased at any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional, local electrical appliance shops or cam-
era stores.
●Replace only with the same or equivalent type recommended by the manufacturer.
●Dispose of used batteries according to local laws.
■When the card key battery needs to be replaced (if equipped)
The battery for the card key is available only at Lexus dealers. Your Lexus dealer can
replace the battery for you.
■If the electronic key battery is depleted
The following symptoms may occur:
●The smart entry & start system and wireless remote control will not function prop-
erly.
●The operational range will be reduced.
4
GS350_250_OM_OM30E16E_(EE).book Page 490 Tuesday, July 8, 2014 7:11 PM
Page 506 of 688