power steering TOYOTA xB 2010 (in English) User Guide

157
As an example, if a vehicle is used for
repeated short trips, and consumes a nor-
mal amount of oil, the dipstick may not
show any drop in the oil level at all, even
after 1000 km (600 miles) or more. This
is because the oil is gradually becoming
diluted with fuel or moisture, making it
appear that the oil level has not changed.
The diluting ingredients evaporate out
when the vehicle is then driven at high
speeds, as on an express way, making it
appear that oil is excessively consumed
after driving at high speeds.
IMPORTANCE OF ENGINE OIL LEVEL
CHECK
One of the most important points in prop-
er vehicle maintenance is to keep the en-
gine oil at the optimum level so that oil
function will not be impaired. Therefore, it
is essential that the oil level be checked
regularly. Scion recommends that the oil
level be checked every time you refuel
the vehicle.
NOTICE
Failure to check the oil level regularly
could lead to serious engine trouble
due to insufficient oil.
For detailed information on oil level check,
see “Checking the engine oil level” on
page 240.The electric power steering system, us-
ing an electric motor, assists the turn-
ing of the steering wheel.
In the following cases, you may feel the
steering becomes heavy. However, the
electric power steering system warning
light does not come on. (Because it is
not a malfunction.)
When maneuvering or turning frequently
over a long time
The power steering effect will be re-
duced to prevent the system from over-
heating. Avoid turning the steering
wheel, or stop the vehicle and turn the
engine switch to “ACC” or LOCK”. The
system will become cool in a
bout 10
minutes.
NOTICE
Frequent maneuvering and turning
over a long time may cause damage
to the system in which the mecha-
nism prevents overheating of the elec-
tric power steering system.
Electric power steering system

158
When racing the engine for 30 seconds
or more with the vehicle stopped
The normal power steering effect will
be obtained when you start driving.
When the battery is discharged
Check the battery’s condition. If neces-
sary, recharge or replace the battery.
For details, see “Checking battery con-
dition” on page 252.
20XB009a
Electric power steering system warning
light
The light comes on when the engine
switch is turned to the “ON” position. If
the electric power steering system works
properly, the light turns off after a few
seconds. If the system has malfunctions,
the light comes on again.
If the following conditions occur, this
indicates a malfunction somewhere in
the components monitored by the warn-
ing light system. Contact your Scion
dealer as soon as possible to service
the vehicle.
The light does not come on when the
engine switch is turned to the “ON”
position or remains on.
The light stays on while you are driv-
ing.
CAUTION
If the electric power steering system
warning light comes on, take your ve-
hicle to Scion dealer as soon as pos-
sible. In this case, more effort is re-
quired for the steering wheel to turn
than usual. Drive your vehicle while
firmly gripping the steering wheel.

159
Brake system
The tandem master cylinder brake system
is a hydraulic system with two separate
sub−systems. If either sub −system s hould
fail, the other will still work. However, the
pedal will be harder to press, and your
stopping distance will increase. Also, the
brake system warning light may come on.
CAUTION
Do not drive your vehicle with only a
single brake system. Have your
brakes fixed immediately.
BRAKE BOOSTER
The brake booster uses engine vacuum to
power −assist the brakes. If the engine
should quit while you are driving, you can
bring the vehicle to a stop with normal
pedal pressure. There is enough reserved
vacuum for one or two stops but no more!
CAUTION
Do not pump the brake pedal if the
engine stalls. Each push on the
pedal uses up your reserved vacu-
um.
Even if the power assist is com-
pletely lost, the brakes will still
work. But you will have to push the
pedal hard, much harder than nor-
mal. And your braking distance will
increase.
ANTILOCK BRAKE SYSTEM
The antilock brake system is designed
to automatically help prevent lockup of
the wheels during a sudden braking or
braking on slippery road surfaces. This
assists in providing directional stab ility
and steering performance of the vehicle
under these circumstances.
Effective way to press the ABS brake
pedal:
When the anti −lock brake system func-
tion is in action, you may feel the brake
pedal pulsating and hear a noise. In this
situation, to let the anti −lock brake sys-
tem work for you, just hold the brake
pedal down more firmly. Do not pump
the brake in a panic stop. This will re-
sult in reduced braking performance.
The anti −lock brake system becomes op-
erative after the vehicle has accelerated
to a speed in excess of approximately 10
km/h (6 mph). It stops operating when the
vehicle decelerates to a speed below
approximately 5 km/h (3 mph).
Depressing the brake pedal on slippery
road surfaces such as on a manhole cov-
er, a steel plate at a construction site,
joints in a bridge, etc. on a rainy day
tends to activate the anti −lock brake sys-
tem.
You may hear a click or motor sound in
the engine compartment for a few seconds
when the engine is started or just after
the vehicle begins to move. This means
that the anti −lock brake system is in the
self −check mode, and does not indicate a
malfunction.

172Ti r e relat ed ter m
Meaning
Cold tire inflation pressure
tire inflation pressure when the vehicl
e has been parked for at leas t 3 hour s
or more, or it has not been driven more than 1.5 km or 1 mile under that
condition
Maximum inflation pressurethe maximum cold inflation pressure to which a tire may be inflated and it is
shown on the sidewall of the tire
Recommended inflation pressurecold tire inflation pressure recommended by a manufacturer
Accessory weight
the combined weight (in excess of those standard items which may be replaced)
of automatic transmission, power steering, power brakes, power windows, pow-
er seats, radio, and heater, to the extent that these items are available as
factory −installed equipment (whether installed or not)
Curb weight
the weight of a motor vehicle with standard equipment including the maximum
capacity of fuel, oil, and coolant, and, if so equipped, air conditioning and addi-
tional weight optional engine
Maximum loaded vehicle weight
t he sum of —
(a) curb weight;
(b) accessory weight;
(c) vehicle capacity weight; and
(d) production options weight
Normal occupant weight68 kg (150 lb.) times the number of occupants specified in the second column
of Table 1 that follows
—Glossary of tire terminology

193

Keep the front wheels in proper
alignment.
Avoid hitting the curb and
slow down on rough roads. Improper
alignment not only causes faster tire
wear but also puts an extra load on
the engine, which, in turn, wastes fuel.
Keep the bottom of your vehicle free
from mud, etc. This not only lessens
weight but also helps prevent corro-
sion.
Keep your vehicle tunedup and in
top shape. A dirty air cleaner,
improper valve clearance, dirty plugs,
dirty oil and grease, brakes not
adjusted, etc. all lower engine
performance and contribute to poor fuel
economy. For longer life of all parts
and lower operating costs, keep all
maintenance work on schedule, and if
you often drive under severe
conditions, see that your vehicle
receives more frequent maintenance.
(For scheduled maintenance
information, please refer to the
“Scheduled Maintenance Guide” or
“Owner ’s Manual Supplement”.)
CAUTION
Never turn off the engine to coast
down hills. Your power steering and
brake booster will not function with-
out the engine running. Also, the
emission control system operates
properly only when the engine is run-
ning.

199
4. Start your engine in the normal way.After starting, run it at about 2000 rpm
for several minutes with the accelerator
pedal lightly depressed.
5. Carefully disconnect the cables in the exact reverse order: the negative cable
and then the positive cable.
If the cause of your battery discharging is
not apparent (for example, lights left on),
you should have it checked at your Scion
dealer.
If the first start attempt is not success-
ful...
Check that the clamp on the jumper
cables are tight. Recharge the discharged
battery with the jumper cables connected
for several minutes and restart your en-
gine in the normal way.
If the another attempt is not successful,
the battery may be depleted. Have it
checked at your Scion dealer. If your engine stalls while driving...
1. Reduce your speed gradually, keeping a straight line. Move cautiously off the
road to a safe place.
2. Turn on your emergency flashers.
3. Try starting the engine again.
If the engine will not start, see “If your
vehicle will not start” on page 196.
CAUTION
If the engine is not running, the pow-
er assist for the brakes and steering
will not work so steering and braking
will be much harder than usual.
If your vehicle overheats
If your engine coolant temperature
gauge indicates overheating, if you ex-
perience a loss of power, or if you hear
a loud knocking or pinging noise, the
engine has probably overheated. You
should follow this procedure...
1. Pull safely off the road, stop the ve- hicle and turn on your emergency
flashers. Put the transmission in “P”
(automatic) or neutral (manual) and ap-
ply the parking brake. Turn off the air
conditioning if it is being used.
2. If coolant or steam is boiling out of the radiator or reservoir, stop the engine.
Wait until the steam subsides before
opening the hood. If there is no coolant
boiling over or steam, leave the engine
running and make sure the electric
cooling fan is operating. If it is not,
turn the engine switch off.
CAUTION
To help avoid personal injury, keep
the hood closed until there is no
steam. Escaping steam or coolant is
a sign of very high pressure.
If your engine stalls while
driving

267
26. HLP MAIN 50 A: “H−LP LH LO”, “H −
LP RH LO”, “H −LP LH HI” and “H −LP
RH HI” fuses
27. P/I 50 A: “EFI MAIN”, “HORN” and
“IG2” fuses
28. EPS 60 A: Electric power steering sys-
tem
29. ALT 120 A: “RDI FAN”, “CDS FAN”,
“ABS NO.1”, “ABS NO.3”, “HTR”,
“AM1”, “DOOR”, “STOP”, “FR DOOR”,
“RR DOOR”, “RL DOOR”, “OBD”,
“ACC −B”, “DEF”, ”TAIL” and “PANEL”
fuses
30. POWER 30 A: Power windows
31. DEF 30 A: Rear window defogger
32. PWR SEAT 30 A: No circuit
33. TAIL 10 A: Parking lights, tail lights,
side maker lights, gauges and meter,
licence plate light and multiport fuel
injection system/ sequential multiport
fuel injection system
34. PANEL 7.5 A: Instrument cluster lights,
instrument panel lights, gauges and
meters
35. FR DOOR 20 A: Power windows
36. RL DOOR 20 A: Power windows
37. RR DOOR 20 A: Power windows
38. SUNROOF 20 A: No circuit
39. CIG 15 A: Cigarette lighter 40. ACC 7.5 A:
Power rear view mirrors,
shift lock control system and audio
system
41. MIR HTR 10 A: Multiport fuel injection
system/ s equential multiport fuel injec-
tion system
42. IGN 7.5 A: Multiport fuel injection sys-
tem/ sequential multiport fuel injection
system, SRS airbag system and steer-
ing lock system
43. METER 7.5 A: Gauges and meters
44. HTRIG 10 A: Air conditioning system
45. WIPER 25 A: Front windshield wiper
46. RR WIPER 15 A: Rear windshield wip-
er
47. WASHER 15 A: Washer
48. ECUIG NO.1 10 A: Multiport fuel in-
jection system/ sequential multiport fuel
injection system, electric power steer-
ing, electric cooling fan, anti −lock brake
system, vehicle stability control system,
shift lock control system and audio
system
49. ECU IG NO.2 10 A: Back−up light,
emergency flasher, starting system, air
conditioning system and rear window
defogger
50. OBD 7.5 A: On−board diagnosis sys-
tem 51. STOP 10 A:
Stop lights, high mounted
stoplight, multiport fuel injection sys-
tem/ sequential multiport fuel injection
system and anti −lock brake assist sys-
tem
52. DOOR 25 A: Power door lock system
53. ACCB 25 A: “CIG” and “ACC” fuses
54. FR FOG 15 A: Front fog lights
55. AM1 7.5 A: Starting system and shift
lo

ck control system