2016 LEXUS IS250 light

5

When trouble arises
393
5-2. Steps to take in an emergency
Have the vehicle inspected by your Lexus dealer immediately.
A buzzer sounds and a warning message is shown on the multi-informa-
tion display. Failing to investigate the cause of the following warnings may
lead to the system operating abnormally and possibly cause an accident.
Have the vehicle inspected by your Lexus dealer immediately.
Wa r n i n g m e s s a g eDetails
(If equipped)
Indicates a malfunction in the AWD system.

(Flashing and then
continuously on)
Indicates a malfunction in the tire pressure warning
system. (→P. 3 2 6 )
The tire pressure warning light comes on after blink-
ing for 1 minute.
(Flashing)
Indicates a malfunction in the steering lock system.

400
5-2. Steps to take in an emergency
Follow the correction procedures.
After taking the specified steps to correct the suspected problem, check
that the warning light turns off.
Interior
buzzer Exterior
buzzer
Wa r n i n g m e s s a g eDetailsCorrection
procedure
Once⎯

(Comes on for 10 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.*
Once

3 times
(Flashing)
Indicates that a
door other than
the driver’s door
has been opened
or closed with the
“ENGINE START
STOP” switch in
any mode other
than OFF and the
electronic key
outside of the
detection area.
Confirm the loca-
tion of the elec-
tronic key.

406
5-2. Steps to take in an emergency
Replacing a flat tire
Chock the tires.
Slightly loosen the wheel nuts (one
turn).
Turn the tire jack portion “A” by
hand until the notch of the jack is in
contact with the jack point.
STEP1
Flat tireWheel chock
positions
Front
Left-hand
side
Behind the
rear right-
hand side tire
Right-
hand side
Behind the
rear left-
hand side tire
Rear
Left-hand
side
In front of the
front right-
hand side tire
Right-
hand side
In front of the
front left-
hand side tire
STEP2
STEP3

5

When trouble arises
407
5-2. Steps to take in an emergency
Raise the vehicle until the tire is
slightly raised off the ground.
Remove all the wheel nuts and the
tire.
When resting the tire on the
ground, place the tire so that the
wheel design faces up to avoid
scratching the wheel surface.
Installing the spare tire
Remove any dirt or foreign matter
from the wheel contact surface.
If foreign matter is on the wheel
contact surface, the wheel nuts
may loosen while the vehicle is in
motion, and the tire may come off
the vehicle.
STEP4
STEP5
STEP1

5

When trouble arises
409
5-2. Steps to take in an emergency
nThe compact spare tire
lThe compact spare tire is identified by the label “TEMPORARY USE ONLY”
on the tire sidewall.
Use the compact spare tire temporarily only in an emergency.
lMake sure to check the tire pressure of the compact spare tire. (→P. 43 9 )
nWhen using the compact spare tire
As the compact spare tire is not equipped with the tire pressure warning valve and
transmitter, low inflation pressure of the spare tire will not be warned. Also, if you
replace the compact spare tire after the tire pressure warning light comes on, the
light remains on.
nIf you have a flat rear tire on a road covered with snow or ice
Install the compact spare tire on the front of the vehicle. Perform the following steps
and fit tire chains to the rear tires.
Replace a front tire with the compact spare tire.
Replace the flat rear tire with the tire removed from the front of the vehi-
cle.
Fit tire chains to the rear tires.
nAfter completing the tire change
The tire pressure warning system must be reset. (→P. 3 2 7 )
STEP1
STEP2
STEP3

5

When trouble arises
413
5-2. Steps to take in an emergency
If the engine will not start
If the engine will not start, even though correct starting procedures are
being followed (→P. 126), consider each of the following points.
nThe engine will not start even when the starter motor operates
normally.
One of the following may be the cause of the problem.
lThere may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
lThe engine may be flooded.
Try to restart the engine once more following correct starting
procedures. (→P. 1 2 6 )
lThere may be a malfunction in the engine immobilizer system.
(→P. 7 7 )
nThe 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.
One of the following may be the cause of the problem.
lThe battery may be discharged. (→P. 4 2 1 )
lThe battery terminal connections may be loose or corroded.
nThe starter motor does not turn over, the interior lights and head-
lights do not turn on, or the horn does not sound.
One of the following may be the cause of the problem.
lOne or both of the battery terminals may be disconnected.
lThe battery may be discharged. (→P. 4 2 1 )
lThere may be a malfunction in the steering lock system.
Contact your Lexus dealer if the problem cannot be repaired, or if
repair procedures are unknown.

5

When trouble arises
421
5-2. Steps to take in an emergency
If the vehicle battery is discharged
The following procedures may be used to start the engine if the vehicle’s
battery is discharged.
You can call your Lexus dealer, or qualified repair shop.
If you have a set of jumper (or booster) cables and a second vehicle
with a 12-volt battery, you can jump start your Lexus following the steps
below.
Remove the engine compartment covers. (→P. 312)
Connecting the jumper cables.
Positive (+) battery terminal on your vehicle
Positive (+) battery terminal on the second vehicle
Negative (-) battery terminal on the second vehicle
Connect the jumper cable to ground on your vehicle as shown in the
illustration.
Start the engine of the second vehicle. Increase the engine
speed slightly and maintain at that level for approximately 5
minutes to recharge the battery of your vehicle.
Open and close any of the doors with the “ENGINE START
STOP” switch OFF.
STEP1
STEP2
STEP3
STEP4

422
5-2. Steps to take in an emergency
nAvoiding a discharged battery
lTurn off the headlights and the audio system while the engine is off.
lTurn off any unnecessary electrical components when the vehicle is running at a
low speed for an extended period, such as in heavy traffic, etc.
CAUTION
nAvoiding battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flammable
gas that may be emitted from the battery.
lMake sure the jumper cable is connected to the correct terminal and that it is not
unintentionally in contact with any part other than the intended terminal.
lDo not allow the jumper cables to come into contact with the “+” and “-” termi-
nals.
lDo not allow open flame or use matches, cigarette lighters or smoke near the
battery.
Maintain the engine speed on the second vehicle and turn the
“ENGINE START STOP” switch to IGNITION ON mode,
then start the vehicle’s engine.
Once the vehicle’s engine has started, remove the jumper
cables in the exact reverse order in which they were con-
nected.
Once the engine starts, have the vehicle checked at your Lexus dealer
as soon as possible.
STEP5
STEP6