2013 Lexus GS350 key battery

GS350_U (OM30C34U)
6476-3. Do-it-yourself maintenance
6
Maintenance and care
■Use a CR2032 lithium battery
●Batteries can be purchased at your Lexus dealer, local electrical appliance shops
or camera stores.
●Replace only with the same or equivalent type recommended by the manufacturer.
●Dispose of used batteries according to local laws.
■If the electronic key battery is depleted
The following symptoms may occur:
●The smart access system with push-button start and wireless remote control will
not function properly.
●The operational range will be reduced.
CAUTION
■Removed battery and other parts
Keep away from children. These parts are small and if swallowed by a child, they
can cause choking. Failure to do so could result in death or serious injury.
NOTICE
■For normal operation after replacing the battery
Observe the following precautions to prevent accidents:
●Always work with dry hands.
Moisture may cause the battery to rust.
●Do not touch or move any other component inside the remote control.
●Do not bend either of the battery terminals.

675
GS350_U (OM30C34U)
When trouble arises7
7-1. Essential information Emergency flashers....................676
If your vehicle has to be stopped in an emergency .... 677 7-2. Steps to take in an emergency
If your vehicle needs to be towed ................................ 678
If you think something is wrong ................684
Fuel pump shut off system ......685
If a warning light turns on or a warning buzzer sounds .....686
If a warning message is displayed .................................697
If you have a flat tire................... 722
If the engine will not start ........ 735
If the shift lever cannot be shifted from P ......................737
If the parking brake cannot be released ................................ 738
If the electronic key does not operate properly ......................740
If the vehicle battery is discharged ..............................743
If your vehicle overheats .......... 747
If the vehicle becomes stuck .............................................. 749

7197-2. Steps to take in an emergency
GS350_U (OM30C34U)
7
When trouble arises
InteriorbuzzerExterior
buzzerWa r n i n g m e s s a g eDetailsCorrection procedure

Power was turned
off due to the auto-
matic power off
function.
Next time
when start-
ing the
engine,
increase the
engine
speed
slightly and
maintain
that level for
approxi-
mately 5
minutes to
recharge
the battery.
OnceThe electronic key
has a low battery.
Replace the
electronic
key batter y.
(  P. 646)

735
GS350_U (OM30C34U)
7
When trouble arises
7-2. Steps to take in an emergency
If the engine will not start
One of the following may be the cause of the problem:
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
●The engine may be flooded.
Try to restart the engine again foll owing correct starting procedures.
( P. 1 5 4 )
●There may be a malfunction in the engine immobilizer system.
( P. 6 8 )
One of the following may be the cause of the problem:
●The battery may be discharged. ( P. 743)
●The battery terminal connections may be loose or corroded.
The engine starting system may be malfunctioning due to an electrical
problem such as electronic key battery depletion or a blown fuse. How-
ever, an interim measure is available to start the engine. ( P. 7 3 6 )
If the engine will not start even though correct starting procedures are
being followed ( P. 154), consider each of the following points:
The engine will not start even though the starter motor operates
normally.
The starter motor turns over slowly, the interior lights and head-
lights are dim, or the horn does not sound or sounds at a low vol-
ume.
The starter motor does not turn over

740
GS350_U (OM30C34U)
7-2. Steps to take in an emergency
If the electronic key does not operate properly
■Doors
Use the mechanical key
(P. 98) in order to perform the
following operations:
Locks all the doors
Closes the windows and moon
roof
* (turn and hold)
Unlocks the door
Turning the key rearward unlocks
the driver’s door. Turning the key
once again within 5 seconds
unlocks the other doors.
Opens the windows and moon
roof
* (turn and hold)
*: This setting must be customized at your Lexus dealer.
If communication between the ele ctronic key and vehicle is inter-
rupted ( P. 108) 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 us ed. 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, unlocking the trunk and key
linked functions
1
2
3
4

7427-2. Steps to take in an emergency
GS350_U (OM30C34U)
■Stopping the engine
Shift the shift lever to P and press the engine switch as you normally do when stop-
ping the engine.
■Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the elec-
tronic key battery be replaced immediately when the battery is depleted. ( P. 6 4 6 )
■Changing engine switch modes
Release the brake pedal and press the engine switch in step above.
The engine does not start and modes will be changed each time the switch is
pressed.( P. 1 7 2 )
■When the electronic key does not work properly
●Make sure that the smart access system with push-button start has not been deac-
tivated in the customization setting. If it is off, turn the function on.
(Customizable features  P. 777)
●Check if battery-saving mode is set. If it is set, cancel the function. ( P. 1 0 7 )
3

7457-2. Steps to take in an emergency
GS350_U (OM30C34U)
7
When trouble arises
■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 discharge 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 star t. (The battery recharges automatically during driving.)
■When recharging or replacing the battery
●Make sure the key is not inside the vehicle when recharging or replacing the bat-
tery to prevent the doors from being lock ed with the key left inside the vehicle
when the alarm operates.
●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 dis-
charged. Before disconnecting the ba ttery, turn the engine switch off.
If you are unsure what mode the engine switch was in before the battery dis-
charged, be especially careful when reconnecting the battery.

804What to do if... (Troubleshooting)
GS350_U (OM30C34U)
What to do if... (Troubleshooting)
●If you lose your mechanical keys, new genuine mechanical keys
can be made by your Lexus dealer. ( P. 9 9 )
●If you lose your electronic ke ys, the risk of vehicle theft
increases significantly. Contact your Lexus dealer immediately.
( P. 100)
●Is the electronic key battery weak or depleted? ( P. 646)
●Is the engine switch in IGNITION ON mode?
When locking the doors, turn the engine switch off. ( P. 1 7 2 )
●Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the elec-
tronic key on your person.
●The function may not operate pr operly due to the condition of
the radio wave. ( P. 1 0 8 )
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