engine Hyundai Sonata Hybrid 2011 Repair Manual

Features of your vehicle
54 4
Anti-lock brake system
(ABS) warning light
This light illuminates if the engine
start/stop button is turned ON and goes
off in approximately 3 seconds if the sys-
tem is operating normally.
If the ABS warning light remains on,
comes on while driving, or does not come
on when the engine start/stop button is
turned to the ON position, this indicates
that there may be a malfunction with the
ABS.
If this occurs, have your vehicle checked
by an authorized HYUNDAI dealer as
soon as possible. The normal braking
system will still be operational, but without
the assistance of the anti-lock brake sys-
tem.
Electronic brake force distri-
bution (EBD) system warning
light
If these two warning lights illuminate at
the same time while driving, your vehicle
may have a malfunction with the ABS
and EBD system.In this case, your ABS and regular brake
system may not work normally. Have the
vehicle checked by an authorized
HYUNDAI dealer as soon as possible.
✽ ✽
NOTICE
If the ABS warning light or EBD warn-
ing light is on and stays on, the
speedometer or odometer/tripmeter
may not work. In this case, have your
vehicle checked by an authorized
HYUNDAI dealer as soon as possible.
Seat belt warning
The driver's seat belt warning light and
chime will activate to the following table
when the engine start/stop button is in
"ON" position.
*
1Warning pattern repeats 11 times with
interval 24 seconds. If the driver's seat
belt is buckled, the light will stop within 6
seconds and chime will stop immediate-
ly.
*
2The light will stop within 6 seconds and
chime will stop immediately.
WARNING
If the both ABS and brake warning
lights are on and stay on, your vehi-
cle’s brake system will not work
normally during sudden braking. In
this case, avoid high speed driving
and abrupt braking. Have your vehi-
cle checked by an authorized
HYUNDAI dealer as soon as possi-
ble.
ConditionsWarning Pattern
Seat BeltVehicle
SpeedLight-BlinkChime-
Sound
Unbuckled6 seconds
Buckled6 secondsNone
Buckled →
Unbuckled
Below 3 mph
(5 km/h)6 secondsNone
3 mph~
6 mph6 seconds
Above 6 mph
(10 km/h)6 sec. on / 24 sec. off
(11 times)
Unbuckled
Above 6 mph
(10 km/h)
↓
Below 3 mph
(5 km/h)6 seconds *1
↓
Stop *2

455
Features of your vehicle
Turn signal indicator
The blinking arrows on the instrument
panel show the direction indicated by the
turn signals. If the arrow comes on but
does not blink, blinks more rapidly than
normal, or does not illuminate at all, a
malfunction in the turn signal system is
indicated. Your dealer should be consult-
ed for repairs.
High beam indicator
This indicator illuminates when the head-
lights are on and in the high beam posi-
tion or when the turn signal lever is pulled
into the Flash-to-Pass position.
Tail light indicator
This indicator illuminates when the tail
lights are on.
Engine oil pressure
warning light
This warning light indicates the engine oil
pressure is low.
If the warning light illuminates while driv-
ing:
1. Drive safely to the side of the road and
stop.
2. With the engine off, check the engine
oil level. If the level is low, add oil as
required.
If the warning light remains on after
adding oil or if oil is not available, call an
authorized HYUNDAI dealer.
CAUTION
If the engine is not stopped imme-
diately after the engine oil pressure
warning light is illuminated, severe
damage could result.
CAUTION
If the oil pressure warning light
stays on while the engine is run-
ning, serious engine damage may
result. The oil pressure warning
light comes on whenever there is
insufficient oil pressure. In normal
operation, it should come on when
the engine start/stop button is
turned on, then go out when the
engine is started. If the oil pressure
warning light stays on while the
engine is running, there is a serious
malfunction.
If this happens, stop the car as
soon as it is safe to do so, turn off
the engine and check the oil level. If
the oil level is low, fill the engine oil
to the proper level and start the
engine again. If the light stays on
with the engine running, turn the
engine off immediately. In any
instance where the oil light stays on
when the engine is running, the
engine should be checked by an
authorized HYUNDAI dealer before
the car is driven again.

Features of your vehicle
56 4
WARNING
Driving the vehicle with a warning
light on is dangerous. If the brake
warning light remains on, have the
brakes checked and repaired imme-
diately by an authorized HYUNDAI
dealer.
Brake system &
Parking brake &
Brake fluid warning light
The brake warning light turned on when
the regenerative brake system is not
operated with brake system malfunction.
Have the system checked by an author-
ized HYUNDAI dealer as soon as possi-
ble.
When the brake function is not well or the
regenerative brake system is not operat-
ed with brake system malfunction, the
brake warning light turned on and 'check
brake' is displayed on the LCD. Have the
system checked by an authorized
HYUNDAI dealer as soon as possible.
Parking brake warning
This light illuminated when the parking
brake is applied with engine start/stop
button in the START or ON position. The
warning light should go off when the
parking brake is released.Low brake fluid level warning
If the warning light remains on, it may
indicate that the brake fluid level in the
reservoir is low.
If the warning light remains on:
1. Drive carefully to the nearest safe
location and stop your vehicle.
2. With the engine stopped, check the
brake fluid level immediately and add
fluid as required. Then check all brake
components for fluid leaks.
3. Do not drive the vehicle if leaks are
found, the warning light remains on or
the brakes do not operate properly.
Have the vehicle towed to any author-
ized HYUNDAI dealer for a brake sys-
tem inspection and necessary repairs.
Your vehicle is equipped with a dual-
diagonal braking system. This means you
still have braking on two wheels even if
one of the brake circuits is damaged or
malfunctions. With only one of the circuits
working, more than normal pedal travel
and greater pedal pressure are required
to stop the car. Also, the car will not stop
in as short a distance with only a portion
of the brake system working. If the
brakes fail while you are driving, shift to a
lower gear for additional engine braking
and stop the car as soon as it is safe to
do so.To check bulb operation, check whether
the parking brake and brake fluid warning
light illuminates when the engine
start/stop button is in the ON position.
CAUTION
When the brake function is not well
and the regenerative brake system is
not operated with brake system mal-
function, the brake warning light
turned on with 'check brake' is dis-
played on the LCD and warning
chime will sound. In this condition
you can stop your vehicle by apply-
ing greater force to the brake pedal
than normal and the stopping dis-
tance will be longer. Have the system
checked by an authorized HYUNDAI
dealer as soon as possible.

Features of your vehicle
58 4
Charging system warning
light
This warning light indicates a malfunction
of either the generator or electrical
charging system.
If the warning light comes on while the
vehicle is in motion:
1. Drive to the nearest safe location.
2. With the engine off, check the genera-
tor drive belt for looseness or break-
age.
3. If the belt is adjusted properly, a prob-
lem exists somewhere in the electrical
charging system. Have an authorized
HYUNDAI dealer correct the problem
as soon as possible.
Front fog light indicator
(if equipped)
This light comes on when the front fog
lights are ON.
Trunk lid open warning
light
This warning light illuminates when the
trunk lid is not closed securely with the
engine start/stop button in any position.
Door open warning
light
This indicator illuminates when a door is
not closed securely.
Immobilizer indicator
(if equipped)
With smart key system
If any of the following occurs in a vehicle
equipped with the smart key, the immobi-
lizer indicator illuminates, blinks or the
light goes off.
When the smart key is in the vehicle, if
the engine start/stop button is turned to
the ON position, the indicator will illumi-
nate for about few seconds. However,
when the smart key is not in the vehicle,
if the engine start/stop button is
depressed, the indicator will blink for a
few seconds to indicate that you will not
be able to start the hybrid system.
When the engine start/stop button is
turned to the ON position and the indica-
tor turns off after 2 seconds, the system
may need repair. Have the vehicle
checked by an authorized HYUNDAI
dealer.
When the battery is weak, if the engine
start/stop button is depressed, the indica-
tor will blink and you will not be able to
start the hybrid system. However, you
may still be able to start the hybrid system
by inserting the smart key in the smart
key holder. If smart key system related
parts need repair, the indicator blinks.

459
Features of your vehicle
Low fuel level warning light
This warning light indicates the fuel tank
is nearly empty. When it comes on, you
should add fuel as soon as possible.
Driving with the fuel level warning light on
or with the fuel level below “E” can cause
the engine to misfire and damage the
catalytic converter.
Engine coolant
temperature warning light
(if equipped)
The warning light illuminates if the tem-
perature of the engine coolant is above
257±4.5°F (125±2.5°C).
Do not continue driving with an overheat-
ed engine. If your vehicle overheats, refer
to “Overheating” in section 6.
Malfunction indicator light
(MIL) (check engine light)
This indicator light is part of the Engine
Control System which monitors various
emission control system components. If
this light illuminates while driving, it indi-
cates that a potential malfunction has
been detected somewhere in the emis-
sion control system.
This light will also illuminate when the
engine start/stop button is turned to the
ON position, and will go out in a few sec-
onds after the engine is started. If it illu-
minates while driving, or does not illumi-
nate when the engine start/stop button is
turned to the ON position, take your vehi-
cle to your nearest authorized HYUNDAI
dealer and have the system checked.
Generally, your vehicle will continue to be
drivable, but have the system checked by
an authorized HYUNDAI dealer promptly.
CAUTION
Prolonged driving with the
Malfunction Indicator Light illumi-
nated may cause damage to the
emission control systems which
could effect drivability and/or fuel
economy.

If the Malfunction Indicator Light
illuminates, potential catalytic
converter damage is possible.
This could result in loss of engine
power. Have the Engine Control
System inspected as soon as pos-
sible by an authorized HYUNDAI
dealer.

Features of your vehicle
60 4
ESC indicator (Electronic
Stability Control)
The ESC indicator will illuminate when
the engine start/stop button is turned
ON, but should go off after approximate-
ly 3 seconds. When the ESC is on, it
monitors the driving conditions under
normal driving conditions, the ESC light
will remain off. When a slippery or low
traction condition is encountered, the
ESC will operate, and the ESC indicator
will blink to indicate the ESC is operating.
The ESC indicator stays on when the
ESC may have a malfunction. Take your
car to an authorized HYUNDAI dealer
and have the system checked.
ESC OFF indicator
The ESC OFF indicator will illuminate
when the engine start/stop button is
turned ON, but should go off after
approximately 3 seconds. To switch to
ESC OFF mode, press the ESC OFF
button. The ESC OFF indicator will illumi-
nate indicating the ESC is deactivated.
If this indicator stays on when ESC OFF
is not selected, the ESC may have mal-
functioned. Take your vehicle to an
authorized HYUNDAI dealer and have
the system checked.
Cruise indicator (if equipped)
CRUISE indicator
The indicator light illuminates when the
cruise control system is enabled.
The cruise indicator light in the instru-
ment cluster is illuminated when the
cruise control ON-OFF button on the
steering wheel is pushed.
The indicator light turns off when the
cruise control ON-OFF button is pushed
again. For more information about the
use of cruise control, refer to “Cruise
control system or Smart cruise control
system” in section 5.CRUISE

461
Features of your vehicle
Cruise SET indicator
The indicator light illuminates when the
cruise function switch (SET- or RES+) is
ON.
The cruise SET indicator light in the
instrument cluster is illuminated when
the cruise control switch (SET- or RES+)
is pushed. The cruise SET indicator light
does not illuminate when the cruise con-
trol switch (CANCEL) is pushed or the
system is disengaged.Electric power steering
(EPS) system warning light
This indicator light comes on after the
engine start/stop button is turned to the
ON position and then it will go out.
This light also comes on when the EPS
needs repairs. If it comes on while driv-
ing, have your vehicle inspected by an
authorized HYUNDAI dealer.
Key reminder warning chime
(if equipped)
If the driver’s door is opened while the
smart key is in the vehicle with the
engine start/stop button in ACC or the
smart key is in the smart key holder with
the engine start/stop button in OFF, the
key reminder warning chime will sound.
The chime sounds until the smart key is
removed from the smart key holder or the
driver’s door is closed.SETEPS

Features of your vehicle
62 4
Warning on the LCD screen
(if equipped)
Key is not in vehicle
If the smart key is not in the vehicle and
if any door is opened or closed with the
engine start/stop button in ACC, ON, or
START, the warning illuminates on the
LCD screen. The chime also sounds for 5
seconds when the smart key is not in the
vehicle and any door is closed.
Key is not detected
If the smart key is not in the vehicle or is
not detected and you push the engine
start/stop button, the warning illuminates
on the LCD screen for 10 seconds.
Low key battery
When the smart key in the vehicle dis-
charges, the warning illuminates on the
LCD screen for 10 seconds.
Replace the battery with a new one. If it
is not possible, you can start the engine
by inserting the smart key into the smart
key holder and pushing the engine
start/stop button.
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463
Features of your vehicle
Press brake pedal to start engine
If the engine start/stop button turns to the
ACC position twice by pushing the
engine start/stop button repeatedly with-
out pressing the brake pedal, the warn-
ing illuminates on the LCD screen for 10
seconds to indicate that you should
press the brake pedal to start the engine.
Shift to "P"
If you push the engine start/stop button
with the engine start/stop button ON and
the shift lever not in P(Park), the warning
illuminates on the LCD screen for 10 sec-
onds to indicate that you should press
the engine start/stop button with the shift
lever in P(Park) to turn off the engine.
Remove key
When you turn off the engine with the
smart key in the smart key holder, the
warning illuminates on the LCD screen
for 10 seconds.
Push the smart key inward and pull it out
from the smart key holder.
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Features of your vehicle
64 4
Insert key
If you push the engine start/stop button
while the "Key is not detected" illumi-
nates on the LCD screen, the warning
illuminates for 10 seconds.
Press start button again
If there is a problem with the engine
start/stop button system, the warning illu-
minates for 10 seconds to indicate that
you could start the engine by pressing
the engine start/stop button while press-
ing the brake pedal.
If the warning illuminates each time you
push the engine start/stop button, take
your vehicle to an authorized HYUNDAI
dealer and have the system checked.
Shift to "P" to start engine
If you try to start the engine with the shift
lever not in P(Park), the warning illumi-
nates for 10 seconds on the LCD screen.
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