2012 MITSUBISHI LANCER EVOLUTION check engine light

Features and controls
3-129
3 Active stability control (ASC)
N00559100121
The active stability control (ASC) takes overall control of the
anti-lock braking system, traction control function and skid
control function to help maintain the vehicle’s control and trac-
tion. Please read this section in conjunction with the pages on
the anti-lock braking system, traction control function and skid
control function.
Anti-lock braking system → P. 3 - 1 2 5
Traction control function → P. 3 - 1 3 0
Skid control function → P. 3 - 1 3 0
NOTE
An operation noise may be emitted from the engine com-
partment in the following situations. The sound is associ-
ated with checking the operations of the ASC. At this
time, you may feel a shock from the brake pedal if you
depress it. These do not indicate a malfunction.
• When the ignition switch is set to the “ON” position.
• When the vehicle is driven for a while after the engine is
turned on.

When the ASC is activated, you may feel a vibration in
the vehicle body or hear a whining sound from the engine
compartment.
This indicates that the system is operating normally. It
does not indicate a malfunction.

When the anti-lock braking system warning light is illu-
minated, the ASC is not active.
CAUTION
!
Do not over-rely on the ASC. Even the ASC cannot
prevent the natural laws of physics from acting on
the vehicle. This system, like any other system, has
limits and cannot help you to maintain traction and
control of the vehicle in all circumstances. Reckless
driving can lead to accidents. It is the driver’s
responsibility to drive carefully. This means taking
into account the traffic, road and environmental
conditions.
Be sure to use the same specified type and size of tire
on all four wheels. Otherwise, the ASC may not
work properly.
Do not install any aftermarket limited-slip differen-
tial (LSD) on your vehicle. The ASC may stop func-
tioning properly.
BK0142300US.book 129 ページ ２０１１年８月７日　日曜日　午前１０時４４分

Features and controls
3-145
3
Tire pressure monitoring system warning light /
display
N00554800110
When the ignition switch is turned to the “ON” position, the
tire pressure monitoring system warning light normally illumi-
nates and goes off a few seconds later.
If one or more of the vehicle tires (except for the spare tire) is
significantly under-inflated, the warning light will remain illu-
minated while the ignition switch is in the “ON” position.
Refer to “If the warning light/display illuminates while driv-
ing” on page 3-147 and take the necessary measures.NOTE
In addition, the warning display is displayed on the infor-
mation screen in the multi-information display.
CAUTION
!
If the tire pressure monitoring system warning light
does not illuminate when the ignition switch is
turned to the “ON” position, it means that the tire
pressure monitoring system is not working properly.
Have the system inspected by an authorized
Mitsubishi Motors dealer.
In such situations, a malfunctioning of the system
may be preventing the monitoring of the tire pres-
sure. Avoid sudden braking, sharp turning and
high-speed driving.
If a malfunction is detected in the tire pressure mon-
itoring system, the tire pressure monitoring system
warning light will blink for approximately 1 minute
and then remain continuously illuminated. The
warning light will issue further warnings each time
the engine is restarted as long as the malfunction
exists.
Check to see whether the warning light goes off after
few minutes driving.
If it then goes off during driving, there is no prob-
lem.
However, if the warning light does not go off, or if it
blinks again when the engine is restarted, have the
vehicle inspected by an authorized Mitsubishi
Motors dealer.
In such situations, a malfunctioning of the system
may be preventing the monitoring of the tire pres-
sure. For safety reasons, when the warning light
appears while driving, avoid sudden braking, sharp
turning and high-speed driving.
BK0142300US.book 145 ページ ２０１１年８月７日　日曜日　午前１０時４４分

3-184 Features and controls
3Indicator light, warning light, and information screen display list
N00557700019
Indicator and warning light list
N00557800212
Type 1 Type 21- Position indicator → P.3-196
2- High beam indicator → P.3-196
3- Charging system warning light → P.3-198
4- Turn signal indicator/Hazard warning light → P.3-196
5- Front fog light indicator → P.3-196
6- Anti-lock braking system warning light → P.3-126, 3-127
7- Tire pressure monitoring system warning light → P.3-145
8- Brake warning light → P. 3 - 1 9 6
9- Cruise control indicator → P.3-137
10- Seat belt reminder/warning light → P.2-16
11- Supplemental Restraint System (SRS) warning light → P. 2 -
4212- Engine malfunction indicator (“SERVICE ENGINE SOON”
or “Check engine light”) → P.3-197
13- Active stability control (ASC) indicator → P.3-131
14- Information screen display list → P. 3 - 1 8 5
BK0142300US.book 184 ページ ２０１１年８月７日　日曜日　午前１０時４４分

3-192 Features and controls
3

There is a fault in the fuel system.
Contact an authorized Mitsubishi
Motors dealer or a repair facility of
your choice to have the system
checked.

The vehicle is being driven with the
parking brake still applied.
Release the parking brake. Refer to
“Brake warning display” on page 3-
199.

There is a fault in the engine oil circu-
lation system.
Park your vehicle in a safe place as
soon as possible and contact an autho-
rized Mitsubishi Motors dealer or a
repair facility of your choice to have
the system checked.
Refer to “Oil pressure warning” on
page 3-201.

There is a fault in the charging system.
Park your vehicle in a safe place as
soon as possible and contact an autho-
rized Mitsubishi Motors dealer or a
repair facility of your choice for assis-
tance.
Refer to “Charging system warning
display” on page 3-198.

There is a fault in the SRS airbag or the
pre-tensioner system.
Contact an authorized Mitsubishi
Motors dealer or a repair facility of
your choice to have the system
checked.
Refer to “SRS warning light/display”
on page 2-42.
Screen
Cause
Do this (Reference)
BK0142300US.book 192 ページ ２０１１年８月７日　日曜日　午前１０時４４分

3-196 Features and controls
3Indicators
N00519900127
Turn signal indicators/Hazard warning lights
N00520000216
The arrows will flash in time with the corresponding exterior
turn signals when the turn signal lever is used.
Both arrows will flash when the hazard warning flasher switch
is pressed.NOTE
If the indicator flashes faster than usual or if the indicator
stays on without flashing, check for a malfunctioning turn
signal light bulb or turn signal connection.High beam indicator
N00520100086
A blue light comes on when the headlights are on high beam.Front fog light indicator
N00520200191
This indicator comes on while the front fog lights are on.Position indicator
N00551300026
This indicator light illuminates while the position lights are on.
Warning lights
N00520300147
Brake warning light
N00520400483
This light comes on when the ignition switch is turned to the
“ON” position (engine off).
When the engine is started, the light should go off a few sec-
onds later. A warning is also displayed in the multi-information
display.
The warning light also illuminates after starting the engine
under the following conditions.

When the parking brake is still applied.

When the brake fluid level is low.

When the brake system circuit is not working properly.
Before driving, be sure that the parking brake is fully released
and brake warning light is off.NOTE
Under conditions such as sporty driving, the brake fluid in
the tank may move and the warning light may come on
temporarily.
If the warning light goes out after a while, there is not a
problem with the brake system and the vehicle can be
driven normally.
BK0142300US.book 196 ページ ２０１１年８月７日　日曜日　午前１０時４４分

Features and controls
3-197
3
Engine malfunction indicator (“SERVICE
ENGINE SOON” or “Check engine light”)
N00520500745
This indicator is a part of the onboard diagnostic (OBD) sys-
tem which monitors the emissions, engine control system or
Twin Clutch SST control system. If a problem is detected in
one of these systems, this indicator comes on. When the igni-
tion switch is turned to the “ON” position, this indicator nor-
mally comes on and goes off after the engine has started.
This indicator will come on if the fuel tank filler cap is not
properly tightened. If this indicator comes on and stays on after
refueling, stop the engine and check that the cap is properly
tightened. (Turn the cap clockwise until you hear clicking
sounds.)
If this indicator does not go off after several seconds or lights
up while driving, have the system checked as soon as possible
at an authorized Mitsubishi Motors dealer or a repair facility of
your choice.
CAUTION
!
If the brake warning light and the Anti-lock braking
system warning light are illuminated at the same
time, the braking force distribution function will not
operate, so the vehicle may be destabilized during
sudden braking under the following conditions.
• When the brake warning light does not go out even
when the parking brake is released.
• When the brake warning light stays on while driv-
ing.
• If the above occurs, avoid sudden braking and
high-speed driving. Park the vehicle in a safe
place, and contact an authorized Mitsubishi
Motors dealer or a repair facility of your choice as
soon as possible.

The vehicle should be brought to a halt in the follow-
ing manner when brake performance is deterio-
rated.
• Confirm that the vehicle slows down when you
press down on the brake pedal harder than usual.
In some cases, the brake pedal may go all the way
to the floor.
• Should the brakes fail, use engine braking to
reduce your speed and slowly apply the parking
brake.
Depress the brake pedal to illuminate the stop
lights to alert the vehicles behind you.
CAUTION
!
Driving for a long time with the engine malfunction
indicator on may cause more damage to the emission
control system. This could also affect fuel economy
and drivability.
If this indicator does not come on when the ignition
switch is turned to the “ON” position, have the sys-
tem checked at an authorized Mitsubishi Motors
dealer or a repair facility of your choice.
BK0142300US.book 197 ページ ２０１１年８月７日　日曜日　午前１０時４４分

3-198 Features and controls
3
NOTE
Do not disconnect the battery cable when the engine mal-
function indicator (“SERVICE ENGINE SOON” or
“Check engine light”) is on.
The engine electronic control module stores critical OBD
information (especially exhaust emission data), which
may be lost if the battery cable is disconnected while the
engine malfunction indicator is on. This will make it diffi-
cult to diagnose the cause of future problems.
Charging system warning light
N00520600296
This light comes on in the event of a malfunction in the charg-
ing system or when the ignition switch is turned to the “ON”
position (engine off). A warning is also displayed in the multi-
information display. When the engine is started, the light
should go out. Check to make sure that the light has gone out
before driving.

If the engine malfunction indicator comes on while
the engine is running, avoid driving at high speeds.
During vehicle operation with the indicator on, the
vehicle may not accelerate when you depress the
accelerator pedal.
When the vehicle is stationary with the indicator on,
you must depress the brake pedal more firmly than
usual since the engine idling speed is higher than
usual and a vehicle with an automatic transaxle has
a stronger tendency to creep forward.
CAUTION
!
CAUTION
!
If the warning light stays on while the engine is run-
ning, park your vehicle in a safe place as soon as
possible and contact an authorized Mitsubishi
Motors dealer or a repair facility of your choice to
have the system checked.
BK0142300US.book 198 ページ ２０１１年８月７日　日曜日　午前１０時４４分

3-200 Features and controls
3
NOTE
Under conditions such as sporty driving, the brake fluid in
the tank may move and the warning display may appear
temporarily.
If the warning display goes out after a while, there is not a
problem with the brake system and the vehicle can be
driven normally.
Charging system warning display
N00558600086
If there is a fault in the charging system, the warning display is
displayed on the information screen in the multi-information
display. The warning light in the instrument cluster also illumi-
nates.
CAUTION
!
If the brake warning display, brake warning light,
and the Anti-lock braking system warning light are
illuminated at the same time, the braking force dis-
tribution function will not operate, so the vehicle
may be destabilized during sudden braking. Avoid
sudden braking and high-speed driving. Park the
vehicle in a safe place, and contact an authorized
Mitsubishi Motors dealer or a repair facility of your
choice.
The vehicle should be brought to a halt in the follow-
ing manner when brake performance is deterio-
rated.
• Confirm that the vehicle slows down when you
press down on the brake pedal harder than usual.
In some cases, the brake pedal may go all the way
to the floor.
• Should the brakes fail, use engine braking to
reduce your speed and slowly apply the parking
brake.
Depress the brake pedal to illuminate the stop
lights to alert the vehicles behind you.
CAUTION
!
If warnings are displayed while the engine is run-
ning, park your vehicle in a safe place as soon as
possible and contact an authorized Mitsubishi
Motors dealer or a repair facility of your choice to
have the system checked.
BK0142300US.book 200 ページ ２０１１年８月７日　日曜日　午前１０時４４分