2008 TOYOTA xB check engine

viii
Scrapping of your Scion
The SRS airbag and seat belt pretensioner devices in
your Scion contain explosive chemicals. If the vehicle is
scrapped with the airbags and pretensioners left as they
are, this may cause an accident such as a fire. Be sure
to have the systems of the SRS airbag and seat belt
pretensioner removed and disposed of by a qualified
service shop or by your Scion dealer before you dis-
pose of your vehicle.
Leak detection pump
This pump performs fuel evaporation leakage check.
This check is done approximately five hours after the
engine is turned off. So you may hear a sound coming
from underneath the luggage compartment for several
minutes. It does not indicate a malfunction.
Perchlorate Material
Special handling may apply,
See www.dtsc.ca.gov/hazardouswaste/perchlorate.
Your vehicle has components that may contain perchlo-
rate. These components may include airbag, seat belt
pretensioners, and wireless remote control batteries.

102
(a) Brake System Warning Light
This light comes on in the following cases
when the ignition key is in the “ON” posi-
tion.
When the parking brake is applied...
This light comes on for a few seconds
when the ignition key is turned to the
“ON” position even after the parking brake
is released.
If the vehicle speed rises above 5 km/h
(3 mph) with the parking brake applied for
1 seconds or more, a buzzer sounds.
When the brake fluid level is low...
CAUTION
It is dangerous to continue driving
normally when the brake fluid level is
low.
Have your vehicle checked at your
Scion dealer in the following cases:
The light does not come on even if the
parking brake is applied when the igni-
tion key is in the “ON” position.
The light does not come on even if the
ignition key is turned on with the park-
ing brake released. A warning light turning on briefly during
operation does not indicate a problem.
CAUTION
If either of the following conditions
occurs, immediately stop your vehicle
at a safe place and contact your
Scion dealer.
The light does not turn off even
after the parking brake is released
while the engine is running.
In this case, the brakes may not
work properly and your stopping
distance will increase. Depress the
brake pedal firmly and bring the ve-
hicle to an immediate stop.
The brake system warning light re-
mains on together with the “ABS”
warning light.
In this case, not only the antilock
brake system will fail but also the
vehicle will become extremely un-
stable during braking.
(b) Driver’s Seat Belt Reminder Light
and Buzzer
The light and buzzer act as a reminder to
buckle up the driver’s seat belt.
Once the ignition key is turned to the
“ON” or “START” position, the reminder
light and buzzer come on if the driver’s
seat belt is not fastened. Unless the driv-
er fastens the belt, the light continues
flashing and 5 beeps sound.
If the vehicle speed rises above 20 km/h
(12 mph) with the seat belt unfastened,
the buzzer will sound for about 10 sec-
onds. Then, if the seat belt is still unfas-
tened, the buzzer will sound in a different
tone for 20 seconds. Even if the vehicle
speed drops below 20 km/h (12 mph), the
buzzer will continue to sound. To stop the
buzzer, fasten the seat belt. If the buzzer
still sounds, make sure the front passen-
ger ’s seat belt is fastened.
The vehicle speed linked seat belt remind-
er buzzer can be disabled. For details,
contact your Scion dealer.
However, Scion recommends that the seat
belt reminder buzzer be operational to
alert the driver and front passenger that
the seat belts are not fastened.

104
(e) Charging System Warning Light
This warning light comes on when the
ignition switch is turned to the “ON” posi-
tion, and goes off when the engine is
started.
When there are problems in the charging
system while the engine is running, the
warning light comes on.
NOTICE
When the charging system warning
light comes on while the engine is
running, malfunctions such as the en-
gine drive belt being broken may have
occurred. If the warning light comes
on, immediately stop the vehicle in a
safe place and contact your Scion
dealer.
(f) Malfunction Indicator Lamp
This lamp comes on when the ignition
key is turned to the “ON” position and
goes off after the engine starts. This
means that the warning light system is
operating properly.
If the lamp remains on, first check the
following.
Empty fuel tank
If the fuel tank is empty, refuel immedi-
ately.
Loose fuel tank cap
If the fuel tank cap is loose, securely
tighten it.
These cases are temporary malfunctions.
The malfunction indicator lamp will go off
after taking several driving trips.
If the lamp does not go off even after
several trips, contact your Scion dealer as
soon as possible. If the fuel tank is not empty or the fuel
tank cap is not loose...
There is a problem somewhere in the
engine, emission control system, auto-
matic transmission electrical system or
warning light system itself.
Contact your Scion dealer as soon as
possible to service the vehicle.
Emissions Inspection and Maintenance
(I/M) programs
Your vehicle may not pass a state emis-
sion inspection if the malfunction indicator
lamp remains on. Contact your Scion deal-
er to check your vehicle’s emission control
system and OBD (On −Board Diagnostics)
system before taking your vehicle for the
inspection.
For details, see “Emissions inspection and
maintenance (I/M) programs” on page 232.
(g) Low Fuel Level Warning Light
This light comes on when the fuel level
in the tank becomes very low. Fill up the
tank as soon as possible.
On inclines or curves, due to the move-
ment of fuel in the tank, the low fuel level
warning light may come on earlier than
usual.

105
(h) Low Engine Oil Pressure WarningLight
This light warns that the engine oil pres-
sure is too low.
If it flickers or stays on while you are
driving, pull off the road to a safe place
and stop the engine immediately. Call a
Scion dealer or qualified repair shop for
assistance.
The light may occasionally flicker when
the engine is idling or it may come on
briefly after a hard stop. There is no
cause for concern if it then goes out when
the engine is accelerated slightly.
The light may come on when the oil level
is extremely low. It is not designed to
indicate low oil level, and the oil level
must be checked using the level dipstick.
NOTICE
Do not drive the vehicle with the
warning light on—even for one block.
It may ruin the engine.
(i) “ABS” Warning Light
The light comes on when the ignition key
is turned to the “ON” position. If the anti −
lock brake system and the brake assist
system work properly, the light turns off
after a few seconds. Thereafter, if the
systems malfunction, the light comes on
again.
When the “ABS” warning light is on (and
the brake system warning light is off), the
anti −lock brake system, the brake assist
system, the traction control system and
the vehicle stability control system do not
operate, but the brake system still oper-
ates conventionally.
When the “ABS” warning light is on (and
the brake system warning light is off), the
anti −lock brake system does not operate
so that the wheels could lock up during
a sudden braking or braking on slippery
road surfaces.
If either of the following conditions
occurs, this indicates a malfunction
somewhere in the components moni-
tored by the warning light system.
Contact your Scion dealer as soon as
possible to service the vehicle.When the ignition key is turned to the
“ON” position, the light does not come
on or remains on.
The light comes on while you are driv-
ing.
A warning light turning on briefly during
operation does not indicate a problem.
CAUTION
If the “ABS” warning light remains on
together with the brake system warn-
ing light, immediately stop your ve-
hicle at a safe place and contact your
Scion dealer.
In this case, not only the antilock
brake system will fail but also the
vehicle will become extremely unsta-
ble during braking.
(j) Open Door Warning Light
This light remains on until all the side
doors and back door are completely
closed.

108
CHECKING SERVICE REMINDER
INDICATORS (except the low fuel level
warning light)1. Apply the parking brake.
2. Open one of the side doors or back door.
The open door warning light should
come on.
3. Close the door. The open door warning light should go
off.
4. Turn the ignition key to the “ON” posi- tion, but do not start the engine.
All the service reminder indicators except
the open door warning light should come
on. The “ABS”, “VSC OFF”, tire pressure
warning light, electric power steering sys-
tem warning light, “MAINT REQD” remind-
er light and slip indicator light go off after
a few seconds. The SRS warning light
goes off after about 6 seconds.
If any service reminder indicator or warn-
ing buzzer does not function as described
above, have it checked by your Scion
dealer as soon as possible.

11 3
Shift range positions
“4” (Fourth range):
The most suitable gear is selected au-
tomatically between first and overdrive
(fourth) gears according to the vehicle
speed or driving conditions.
“3” (Third range):
The most suitable gear is selected au-
tomatically between first and third
gears according to the vehicle speed
or driving conditions. Slight engine
braking will be obtained on a downhill
road. Smooth running with less shifting
will be obtained on an uphill road.
“2” (Second range):
First or second gear will be selected
automatically according to the vehicle
speed or driving conditions. This range
is to be used when stronger engine
braking is necessary.
“1” (First range):
The gear is fixed in first regardless of
vehicle speed or driving conditions.
This range is to be used when maxi-
mum engine braking is necessary.
If you attempt to downshift the transmis-
sion when it is not possible to downshift
due to high vehicle speed, a warning tone
sounds twice. Maximum allowable speeds
To get on a highway or to pass slower
traffic, maximum acceleration may be nec-
essary. Make sure you observe the follow-
ing maximum allowable speeds in each
range:
range km/h (mph)1 59 (37)
2 115 (71)
3 181 (113)
NOTICE
Do not downshift if you are going
faster than the maximum allowable
speed for the next lower range.
When the “S” mode indicator light does
not come on even with the selector lever
moved to the “S” position, there may be
a problem somewhere in the system. Have
your vehicle checked/repaired by your
Scion dealer as soon as possible. In this
case, you can drive in the same condition
as in the “D” position. (d) Using engine braking
To use engine braking, you can downshift
the transmission as follows:
When driving in the “D” position—
Shift the selector lever to “S” posi-
tion.
When driving in the “4” range within
the “S” position— Move the selector lever down to
the “ −” side to select the “3” range.
The transmission will downshift to
third range when the vehicle speed
drops down to or lower than 172 km/h
(107 mph), and engine braking will be
enabled.
When the cruise control is being used,
engine braking will not be enabled be-
cause the cruise control is not can-
celled.
For decreasing the vehicle speed, see
“Cruise control” on page 126.
Move the selector lever down to the
“ − ” side to select the “2” range. The
transmission will downshift to second
range when the vehicle speed drops
down to or lower than 107 km/h (66
mph), and stronger engine braking will
be enabled.

11 6
NORMAL DRIVING MODE
Leave the system on during the ordi-
nary driving so that it can operate
when needed.
You may hear a sound in the engine
compartment for a few seconds just after
the vehicle begins to move. This means
that the traction control system is in the
self−check mode, but does not indicate a
malfunction. When the traction control system is oper-
ating, the following conditions occur:
The system controls the spinning of the
front wheels. At this time, the slip indi-
cator light blinks.
You may feel vibration or noise in your
vehicle, caused by operation of the
brakes. This indicates the system is
functioning properly.
The slip indicator light comes on for a few
seconds when the ignition key is turned
to “ON” position. If the indicator light does
not come on when the ignition is turned
on, contact your Scion dealer. TRACTION CONTROL OFF MODE
If your wheels get stuck in a ditch
when you are driving on a severe off
road and sand, turn off the traction
control system or vehicle stability con-
trol system. (See page 118 to turn off
the vehicle stability control system.)
These systems control engine perfor-
mance that interferes with the process
of freeing your wheels.

11 7
To turn off: Push “VSC OFF” switch
briefly.
The slip indicator light will come on.
When the ignition key is turned to “ON”
position, the traction control system and
vehicle stability control system always turn
on.
Traction control system turns back on
when the vehicle reaches to the certain
speed.
To turn on: Push “VSC OFF” switch
once again.
The slip indicator light will go off.
CAUTION
When traction control and vehicle sta-
bility control system are off, be espe-
cially careful and drive at a speed
appropriate to the road conditions. As
these are systems to ensure vehicle
stability and driving force, do not
turn off traction control and vehicle
stability control system unless neces-
sary.
In the following cases, contact your Scion
dealer:
The slip indicator light does not come
on when the ignition key is turned to
“ON” position.
The slip indicator light remains on after
the ignition key is turned to “ON” posi-
tion.
The slip indicator light comes on in the
normal driving mode while driving.The vehicle stability control system
helps provide integrated control of the
systems such as an antilock brake
system, traction control, engine control,
etc. This system automatically controls
the brakes and engine to help prevent
the vehicle from skidding when corner-
ing on a slippery road surface or oper-
ating steering wheel abruptly.
The vehicle stability control system is acti-
vated when the vehicle speed is about
more than 15 km/h (9 mph).
You may hear a sound in the engine
compartment for a few seconds just after
the vehicle begins to move. This means
that the system is in the self
−check mode,
but does not indicate a malfunction.
Vehicle stability control
system