2012 Lexus ES350 key

407
4-3. Do-it-yourself maintenance
4
Maintenance and care
ES350_U
Electronic key battery
Replace the battery with a new one if it is discharged.
■You will need th e following items:
● Flathead screwdriver
● Small Phillips-head screwdriver
● Lithium battery (CR1632)
■ Replacing the battery
Take out the mechanical key.
Remove the cover.
Remove the depleted battery.
Insert a new battery with the +
terminal facing up.
STEP1
STEP2
STEP3

408
4-3. Do-it-yourself maintenance
ES350_U
■If the electronic key battery is discharged
The following symptoms may occur.
●The smart access system with push-button start and wireless remote control will
not function properly.
●The operational range is reduced.
■Use a CR1632 lithium battery
●Batteries can be purchased at your Lexus dealer, jewelers, or camera stores.
●Replace only with the same or equivalent type recommended by a Lexus dealer.
●Dispose of used batteries according to the local laws.
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 components inside the remote control.
●Do not bend either of the battery terminals.

When trouble arises5
429
ES350_U
5-1. Essential informationEmergency flashers.............. 430
If your vehicle needs to be towed ....................................... 431
If you think something is wrong ...................................... 437
Fuel pump shut off system .................................... 438 5-2. Steps to take in an
emergency
If a warning light turns on or a warning buzzer
sounds... ................................. 439
If a warning message is displayed................................ 449
If you have a flat tire................. 461
If the engine will not start .... 470
If the shift lever cannot be shifted from P ....................... 472
If you lose your keys .............. 473
If the electronic key does not operate properly........... 474
If the vehicle battery is discharged ............................. 477
If your vehicle overheats ..... 480
If the vehicle becomes stuck........................................ 483
If your vehicle has to be stopped in an
emergency ............................ 484

458
5-2. Steps to take in an emergency
ES350_U
Follow the correction procedure for problem in smart access system with push-button start.
After taking the specified steps to correct the suspected problem, check
that the warning message turns off.
InteriorbuzzerExterior buzzerWarning messageDetailsCorrection
procedure
Once
(Comes on for 8 seconds.)
(Flashing)
Indicates that an
attempt was made
to start the engine
without the elec-
tronic key being
present, or the
electronic key was
not functioning
normally.
Start the engine
with the elec-
tronic key
present.
*
Once3 times
(Flashing)
Indicates that a
door other than
the driver’s door
has been opened
and closed with
the “ENGINE
START STOP”
switch in any
mode other than
OFF and the elec-
tronic key outside
of the detection
area.
Confirm the loca-
tion of the elec-
tronic key.

5
When trouble arises
459
5-2. Steps to take in an emergency
ES350_U
InteriorbuzzerExterior buzzerWa r n i n g m e s s a g eDetailsCorrection
procedure
Once3 times
(Flashing)
Indicates that the
driver’s door has
been opened or
closed with the
shift lever in P, the
“ENGINE START
STOP” switch in
any mode other
than OFF and the
electronic key
outside of the
detection area.
Tu r n t h e
“ENGINE START
STOP” switch
OFF or confirm
the location of the
electronic key.
Con-
tinuousCon-
tinuous
(Displayed alternately)
(Flashing)
Indicates that the
driver’s door has
been opened or
closed with the
shift lever out of P,
the “ENGINE
START STOP”
switch in any
mode other than
OFF and the elec-
tronic key outside
of the detection
area.
• Shift the shift lever to P.
•Confirm the
location of the
electronic key.
Once
(Flashing)
Indicates that the
key battery is low.Replace the bat-
tery. ( →P. 4 0 7 )

460
5-2. Steps to take in an emergency
ES350_U*: If the engine does not start when the electronic key is inside the vehicle,
the electronic key battery may be de pleted or there may be difficulties
receiving the signal from the key. ( →P. 32)
Interior
buzzerExterior buzzerWarning messageDetailsCorrection
procedure
Once
Indicates that a
door has been
opened or closed
and the “ENGINE
START STOP”
switch has been
switched twice to
ACCESSORY
mode from OFF.
Press the
“ENGINE START
STOP” switch
while applying the
brakes.

(Comes on for 15 seconds.)
(Flashing)
Indicates that the
steering lock has
not released.
Press the
“ENGINE START
STOP” switch
again while turn-
ing the steering
wheel with the
brake pedal
depressed.
OnceIndicates that the
electronic key
does not operate
properly.
→ P. 4 7 5


5
When trouble arises
473
5-2. Steps to take in an emergency
ES350_U
If you lose your keys
New genuine Lexus keys can be made by your Lexus dealer using the other
key and the key number stamped on your key number plate.

474
5-2. Steps to take in an emergency
ES350_U
If the electronic key does not operate properly
Locking and unlocking the doors and key linked functions
Use the mechanical key built in to the electronic keys to operate the
doors. (→ P. 2 6 )
Remove the cover on the driver’s
door handle.
Locks all doors
Closes the windows/standard
moon roof (turn and hold)
Unlocks the door
Tu r n i n g t h e k e y r e a r w a r d u n l o c k s
the driver's door. Turning the key
once again unlocks the other
doors.
Opens the windows/standard
moon roof (turn and hold)
If communication between the electronic key and vehicle is interrupted
(→ P. 32) or the electronic key cann ot be used because the battery is
depleted, smart access system with push-button start and wireless remote
control cannot be used. In such cases, the doors can be opened or the
engine can be started by following the procedure below.
STEP1
STEP2