2007 TOYOTA AVALON check engine

273
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 stability
and steering performance of the vehicle
under these circumstances.
Effective way to press the ABS brake
pedal: When the anti −lock brake system
function is in action, you may feel the
brake pedal pulsating and hear a noise.
In this situation, to let the anti −lock
brake system work for you, just hold the
brake pedal down more firmly. Do not
pump the brake in a panic stop. This
will result in reduced braking performan-
ce.
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 is started. This means that the
anti
−lock brake system is in the self
check mode, and does not indicate a mal-
function.
When the antilock brake system is ac-
tivated, the following conditions may
occur. They do not indicate a malfunc-
tion of the system:
You may hear the anti −lock brake sys-
tem operating and feel the brake pedal
pulsating and the vibrations of the ve-
hicle body and steering wheel. You
may also hear the motor sound in the
engine compartment even after the ve-
hicle is stopped.
At the end of the anti −lock brake sys-
tem activation, the brake pedal may
move a little forward.
CAUTION
Do not overestimate the antilock
brake system: Although the antilock
brake system assists in providing ve-
hicle control, it is still important to
drive with all due care and maintain
a moderate speed and safe distance
from the vehicle in front of you, be-
cause there are limits to the vehicle
stability and effectiveness of steering
wheel operation even with the anti
lock brake system on.
If tire grip performance exceeds its
capability, or if hydroplaning occurs
during high speed driving in the rain,
the antilock brake system does not
provide vehicle control.

276
DRUMINDISC TYPE PARKING BRAKE
SYSTEM
Your vehicle has a drum−in −disc type
parking brake system. This type of brake
system n eeds bedding −down of the brake
shoes periodically or whenever the parking
brake shoes and/or drums are replaced.
Have your Toyota dealer perform the bed-
ding− down. BRAKE ASSIST SYSTEM (vehicles with
vehicle stability control system)
When you slam the brakes on, the
brake assist system judges as an emer-
gency stop and provides more powerful
braking for a driver who cannot hold
down the brake pedal firmly.
When you slam the brakes on, more pow-
erful braking will be applied. At this time,
you may hear a sound in the engine
compartment and feel the vibration of the
brake pedal. This does not indicate a mal-
function.
The brake assist system becomes opera-
tive 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).
For an explanation of this system’s warn-
ing light, see “Service reminder indicators
and warning buzzers” on page 145 in Sec-
tion 1
−6.
The brake pad wear limit indicators on
your disc brakes give a warning noise
when the brake pads are worn to where
replacement is required.
If you hear a squealing or scraping noise
while driving, have the brake pads
checked and replaced by your Toyota
dealer as soon as possible. Expensive ro-
tor damage can result if the pads are not
replaced when necessary.
Brake pad wear limit
indicators

296
1. Check the area around the vehicle be-fore entering it.
2. Adjust seat position, seatback angle, seat cushion angle, seat cushion
length, head restraint height, steering
wheel angle and length.
3. Adjust the inside and outside rear view mirrors.
4. Lock all the doors.
5. Fasten seat belts. With smart key system only—
Once you press “ENGINE START STOP”
switch (engine switch) and release it, the
cranking hold function continues to crank
the engine until it starts.
The function stops cranking the engine
after about 25 seconds maximum if the
engine has not started yet. When you
crank the engine again, wait a few sec-
onds and restart it.
If you press and hold the “ENGINE
START STOP” switch, the function will
keep cranking for about 30 seconds maxi-
mum. 1. Apply the parking brake firmly.
2. Turn off unnecessary lights and acces-
sories.
3. Put the selector lever in “P”. If you need to restart the engine while the
vehicle is moving, put the selector le-
ver in “N”. A starter safety device will
prevent the starter from operating if the
selector lever is in any drive position.
4. Depress the brake pedal and hold it to the floor until driving off.
Before starting the engine How to start the engine—
—Cranking hold function
(a) Before cranking

297
Before starting the engine, be sure to fol-
low the instructions in “(a) Before crank-
ing”.
Normal starting procedure
The multiport fuel injection system/sequen-
tial multiport fuel injection system in your
engine automatically controls the proper
air−fuel mixture for starting. You can start
a cold or hot engine as follows:
With your foot off the accelerator pedal,
crank the engine by turning the key to
“START” position. Release it when the en-
gine starts.
Engine should be warmed up by driving,
not in idle. For warming up, drive with
smoothly turning engine until engine cool-
ant temperature is within normal range.
If the engine stalls...
Simply restart it, using the correct proce-
dure given in normal starting.
If the engine will not start...
See “If your vehicle will not start” on page
314 in Section 4.NOTICE
 Do not crank for more than 30 se-
conds at a time. This may overheat
the starter and wiring systems.
 Do not race a cold engine.
 If the engine becomes difficult to
start or stalls frequently, have the
engine checked immediately.
PUSH BUTTON START FUNCTION
The engine can be started by pressing the
“ENGINE START STOP” switch.
Before starting the engine, be sure to fol-
low the instructions in “(a) Before crank-
ing”.
Normal starting procedure
The multiport fuel injection system/sequen-
tial multiport fuel injection system in your
engine automatically controls the proper
air −fuel mixture for starting. You can start
a cold or hot engine as follows:
(b) Starting the engine
(with key cylindertype
ignition switch) (b) Starting the engine
(with smart key system)

298
When the key is in the vehicle (on your
person), it is possible to start the engine.
With the brake pedal firmly depressed, the
indicator light on the “ENGINE START
STOP” switch will turn green. Check that
the automatic transmission selector lever
is in the “P” position. Pressing the “EN-
GINE START STOP” switch once starts
the engine.
Press the “ENGINE START STOP” switch
slowly and firmly.
Engine should be warmed up by driving,
not in idle. For warming up, drive with
smoothly turning engine until engine cool-
ant temperature is within normal range.
If the engine stalls...
Simply restart it, using the correct proce-
dure given in normal starting.
If the engine will not start...
In the following cases, the engine will not
start.
If a buzzer sounds from the vehicle
and the smart key system warning light
comes on when pressing the “ENGINE
START STOP” switch, this indicates
that the key is not in the vehicle.
If the key is placed in the trunk.
There are instances in which the en-
gine will not start, even if the key is
in the vehicle (e.g. on the floor, in the
cup holder or glove box).When the push button start function
does not operate properly, the following
may be causes:
The key battery may be discharged if
the electronic key does not work.
You can start the engine by touching
the Toyota logo side of the electronic
key to the “ENGINE START STOP”
switch. For derails, see “Smart key
system” on page 27 in Section 1
−2.
Replace the key battery as soon as
possible. (See “—Replacing battery” on
page 25 in Section 1 −2.)
The engine was repeatedly turned on
and off over a short period.
Wait 10 seconds and then start the
engine.

299
If the green indicator light on the
“ENGINE START STOP” switch flashes
and the smart key system warning light
on the instrument cluster comes on,
the steering wheel is locked.
To free it, rock the steering wheel
slightly while pressing the “ENGINE
START STOP” switch.
If the amber indicator light on the
“ENGINE START STOP” switch flashes
and the smart key system warning light
on the instrument cluster comes on,
there is a problem in the push button
start function or the steering lock func-
tion.
Contact your Toyota dealer and have
your vehicle and all keys inspected.
In addition to the above, there are
instances in which the smart key sys-
tem does not operate properly because
of the circumstances of use. For de-
tails, see “Smart key system” on page
27 in Section 1−2.
In cases other than those described
above, it is possible that a problem has
occurred in an area other than the start
system. See “If your vehicle will not start”
on page 314 in Section 4. When the battery is disconnected or
run down,
the push button start function
memorizes the current mode. After you
reconnect, replace, or recharge the bat-
tery, the memorized mode is selected au-
tomatically. In any of these cases, turn off
the engine if the engine comes on.
Wait 10 seconds to start the engine after
the battery has been reconnected. The
engine may not start on the first try. This
does not indicate a malfunction.
NOTICE
 Do not race a cold engine.
 If the engine becomes difficult to
start or stalls frequently, have the
engine checked immediately.

300
TIPS FOR USING SMART KEY SYSTEM
When using the smart key system, it is
possible to start or stop the engine as
long as the key is on your person.
For this reason, it is possible that a pas-
senger may remove the key from the ve-
hicle without the driver being aware of the
fact. In such a case, it is not possible to
restart the engine after having turned it
off. In addition, it is possible that one may
get out of the vehicle without being aware
that the ignition switch has not been
turned off completely.
When driving or getting in or out of the
vehicle, drivers should make sure that
they are carrying the key.
CAUTION
Do not touch the “ENGINE START
STOP” switch (engine switch) while
driving.
If you have to make an emergency stop,
press and hold the “ENGINE START
STOP” switch for more than 3 seconds.
Smart key system warning light
SYSTEM FUNCTION REMINDERS
Follow the instructions described below if
any of the following warnings occur:(A) A warning buzzer sounds once from
the instrument cluster when the igni-
tion switch is turned on
This indicates that the driver has gotten
into the vehicle without the key. The smart
key system warning light on the instru-
ment panel will come on.
Operate the ignition switch only after tak-
ing care that the key is in the vehicle.
(B) A warning buzzer beeps repeatedly from the instrument cluster when
opening the driver ’s door
This indicates that the ignition switch is
not set at OFF although the transmission
selector lever has been set in the “P”
position.
Get out of the vehicle only after turning
off the engine by pressing the “ENGINE
START STOP” switch and checking that
the ignition switch indicator light has gone
off.
Driving and parking using
smart key system

301
(C) A warning buzzer sounds once fromthe instrument cluster, accompanied
by three warning sounds from the
vehicle when the driver gets out of
the vehicle and closes the door
This indicates that the driver is attempting
to leave the vehicle carrying the key, ne-
glecting to follow the instructions for case
(B) above. In addition, the smart key sys-
tem warning light on the instrument panel
will come on.
Get out of the vehicle only after turning
off the engine by pressing the “ENGINE
START STOP” switch and checking that
the ignition switch indicator light has gone
off. If the driver returns to the vehicle
without carrying the key and begins driv-
ing, a warning buzzer will sound once
more. (D) A warning buzzer sounds from the
vehicle for 2 seconds after locking
the door with the door handle switch
This indicates that the driver is attempting
to lock the doors while carrying the key,
neglecting to follow the instructions for
cases (B) and (C) above.
Lock the doors only after turning off the
engine by pressing the “ENGINE START
STOP” switch and checking that the igni-
tion switch indicator light has gone off.
A warning buzzer that sounds even though
the engine has been turned off indicates
that you are attempting to lock the vehicle
with the keys still in the vehicle.
Leave the vehicle only after making sure
that you are carrying the key. (E) A warning buzzer sounds continu-
ously from the instrument cluster
when opening the driver ’s door
This indicates that the transmission selec-
tor lever is in a position other than “P”
and that the ignition switch is not set at
OFF.
Get out of the vehicle only after setting
the transmission selector lever in the “P”
position, turning off the engine by pressing
the “ENGINE START STOP” switch and
checking that the ignition switch indicator
light has gone off.