2011 Lexus HS250h key

5
When trouble arises
523
5-2. Steps to take in an emergency
Once
(Flashes)
•When the doors were unlocked
with the
mechanical key
and then the
“POWER”
switch was
pressed, the
electronic key
could not be
detected in the
vehicle.
• The electronic key could not be
detected in the
vehicle even
after the
“POWER”
switch was
pressed two
consecutive
times.
Touch the elec-
tronic key to the
“POWER” switch
while depressing
the brake pedal.
Once
(Flashes)
An attempt was
made to start the
hybrid system
with the shift posi-
tion in N.Change the shift
position to P and
start the hybrid
system.
Interior buzzerExterior buzzerWa r n i n g m e s s a g eDetailsCorrection
procedure

524
5-2. Steps to take in an emergency

Po w e r w a s t u r n e d
off due to the
automatic power
off function.
Next time when
starting the hybrid
system, increase
the engine speed
slightly and main-
tain that level for
approximately 5
minutes to
recharge the 12-
volt battery.
OnceThe electronic key
has a low battery.Replace the elec-
tronic key battery.
(P. 4 5 9 )
Interior
buzzerExterior buzzerWa r n i n g m e s s a g eDetailsCorrection
procedure

5
When trouble arises
525
5-2. Steps to take in an emergency
Once
(Flashes)
The driver's door
was opened and
closed with the
“POWER” switch
turned off and
then the
“POWER” switch
was put in
ACCESSORY
mode twice with-
out the hybrid sys-
tem being started.
Press the
“POWER” switch
while depressing
the brake pedal.
During a hybrid
system starting
procedure in the
event that the
electronic key was
not functioning
properly
(P. 5 4 0 ) , t h e
“POWER” switch
was touched with
the electronic key.
Press the
“POWER” switch
within 10 seconds
of the buzzer
sounding.
Interior
buzzerExterior buzzerWa r n i n g m e s s a g eDetailsCorrection
procedure

5
When trouble arises
537
5-2. Steps to take in an emergency
If the hybrid system will not start
Reasons for the hybrid system not starting vary depending on the situation.
Check the following and perform the appropriate procedure:
■The hybrid system will not start even though the correct starting
procedure is being followed. ( P. 1 4 7 )
One of the following may be the cause of the problem:
● The electronic key may not be functioning properly.* (P. 540)
● There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
● There may be a malfunction in the immobilizer system.* (P. 9 8 )
● There may be a malfunction in the P position control system.*
( P. 150, 508)
● The hybrid system may be malfunc tioning due to an electrical
problem such as an open circ uit or a blown fuse. However,
depending on the type of malfunc tion, an interim measure is avail-
able to start the hybrid system. ( P. 4 6 1 )
*: It may not be possible to shift out of the P position.
■The interior lights and headlights are dim, or the horn does not
sound or sounds at a low volume.
One of the following may be the cause of the problem:
● The 12-volt battery may be discharged. ( P. 543)
● The 12-volt battery terminal co nnections may be loose or cor-
roded.

5
When trouble arises
539
5-2. Steps to take in an emergency
If you lose your keys
New genuine Lexus keys can be made by your Lexus dealer using the other
keys and the key number stamped on your key number plate.

540
5-2. Steps to take in an emergency
If the electronic key does not operate properly
Locking and unlocking the doors, unlocking the trunk and key linked functions
Doors
Use the mechanical key (P. 4 0 )
in order to perform the following
operations (driver’s door only):
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 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 electron ic key and vehicle is interrupted
(  P. 50) 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 used. In su ch cases, the doors and trunk can be
opened and the hybrid system can be started by following the procedure
below.

5
When trouble arises
541
5-2. Steps to take in an emergency
Tr u n kTurn the mechanical key clock-
wise to open.
Changing “POWER” switch modes and starting the hybrid system
Depress the brake pedal. Touch the Lexus emblem side of
the electronic key to the
“POWER” switch.
If any of the doors is opened or
closed while the key is being
touched to the switch, an alarm will
sound to indicate that the start
function cannot detect the elec-
tronic key.

542
5-2. Steps to take in an emergency
To change “POWER” switch modes: Within 10 seconds of the
buzzer sounding, release the brake pedal and press the
“POWER” switch. Modes can be changed each time the switch is
pressed. ( P. 1 4 8 )
To start the hybrid system: Press the “POWER” switch within 10
seconds of the buzzer sound ing, keeping the brake pedal
depressed.
In the event that the hybrid system still cannot be operated, contact your
Lexus dealer.
■Stopping the hybrid system
In the same method as the normal hybrid system stopping procedure, completely
stop the vehicle and then press the “POWER” switch.
■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. 4 5 9 )
■When the electronic key does not work properly
Make sure that the smart access system wi th push-button start has not been deacti-
vated in the customization setting. If it is off, turn the function on.
(Customizable features P. 5 8 0 )