check engine GENESIS G90 2021 Service Manual

Driving in sand or mud
• Maintain slow and constant speed.
• Keep sufficient distance between
your vehicle and the vehicle in front
of you.
• Reduce vehicle speed and always
check the road condition.
• Avoid speeding, rapid acceleration,
sudden brake applications, and
sharp turns to prevent getting
stuck.
When the vehicle is stuck in snow,
sand or mud, avoid running the
engine continuously at high rpm,
doing so may damage the tires,
transmission, differential or AWD
system.
Information
• When using Snow Tires, mount
them on all four wheels.
• When using AutoSock
®(fabric snow
chain), install them on the rear tires.
For more information on Snow Tires
and Tire Chains, refer to "Winter
Driving" in this chapter.
Driving up or down hills
• Driving uphill
- Before starting off, check if it is
possible to drive uphill.
- Drive as straight as possible.
• Driving downhill
- Do not change gear while driving
downhill. Select gear before driv-
ing downhill.
- Drive slowly and select Manual
Shift Mode to provide engine
braking while driving downhill.
- Drive straight as possible.
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NOTICE
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05
Exercise extreme caution driv-
ing up or down steep hills. The
vehicle may flip depending on
the grade, terrain and water/
mud conditions.
WARNING

Emergency Precautions
Tires
When replacing the tires, be sure to
equip all four tires with the same
size, type, tread, brand and load-car-
rying capacity.
In an emergency situation, a com-
pact spare tire may be used. But, do
not use the compact spare tire con-
tinuously. Repair or replace the origi-
nal tire as soon as possible to avoid
failure of the differential or AWD sys-
tem.
Tire size mismatch. Check all tire
sizes.
If your vehicle is equipped with differ-
ent tires (size, type, etc.) on the front
and rear, the message will appear. To
use the AWD system, equip the vehi-
cle with the same tires on the front
and rear.
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Driving your vehicle
Do not use tire and wheel with
different size and type from the
one originally installed on your
vehicle. It can affect the safety
and performance of your vehi-
cle, which could lead to steering
failure or rollover causing seri-
ous injury.
WARNING
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Never start or run the engine
while an AWD vehicle is raised
on a jack. The vehicle can slip or
roll off of a jack causing serious
injury or death to you or those
nearby.
WARNING
OHI059029N

Towing
AWD vehicles must be towed with all
wheels off the ground, either on a
flatbed tow truck or using doilies.
For more details, refer to "Towing"
in chapter 6.
Vehicle inspection
• If the vehicle needs to be operated
on a vehicle lift do not attempt to
stop any of the four wheels for turn-
ing. This could damage the sys-
tem.
• Never engage the parking brake
while running the engine on a car
lift. This may damage the AWD
system.
Dynamometer testing
An AWD vehicle must be tested on a
special four wheel chassis dynamome-
ter.
An AWD vehicle should not be tested
on a 2WD roll tester. If a 2WD roll
tester must be used, perform the fol-
lowing procedure:
1. Check the tire pressures recom-
mended for your vehicle.
2. Place the rear wheels on the roll
tester for a speedometer test as
shown in the illustration.
3. Release the parking brake.
4. Place the front wheels on the tem-
porary free roller as shown in the
illustration.
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05
OHI058031Roll Tester (Speedometer)
Temporary Free Roller
Keep away from the front of the
vehicle while the vehicle is in
gear on the dynamometer. The
vehicle can jump forward and
cause serious injury or death.
WARNING

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05
• NEVER install any accessories
or stickers on the front wind-
shield, or tint the front wind-
shield.
• NEVER place any reflective
objects (i.e. white paper, mirror)
over the dashboard. Any light
reflection may prevent the sys-
tem from functioning properly.
• Pay extreme caution to keep the
camera dry.
• NEVER disassemble the camera
assembly, or apply any impact
on the camera assembly.
If the sensor is forcibly moved
out of proper alignment, the FCA
system may not operate correct-
ly. In this case, a warning mes-
sage may not be displayed. Have
the vehicle inspected by an
authorized retailer of Genesis
Branded products.
Information
Have the system checked by an
authorized retailer of Genesis
Branded products. when:
• The windshield glass is replaced.
• The radar sensor or cover gets dam-
aged or replaced.
Warning message and warning
light
Forward Collision-Avoidance Assist
(FCA) system disabled.
Radar blocked
When the sensor cover is covered
with dirt, snow, or debris, the FCA
system may not be able to detect
other vehicles. If this occurs, a warn-
ing message will appear on the clus-
ter LCD display.
The system will operate normally
when such dirt, snow or debris is
removed.
FCA may not properly operate in an
area (e.g. open terrain) where any
objects or vehicles are not detected
after turning on the engine.
Also, even though a warning mes-
sage does not appear on the LCD
display, the FCA may not properly
operate.
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NOTICE
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The FCA system may not acti-
vate according to road condi-
tions, inclement weather, driv-
ing conditions or traffic condi-
tions.
WARNING

System Malfunction
Check PCA (Parking Collision
Avoid. Assist)
If there is a problem with the Parking
Collision-Avoidance Assist-Reverse
system or other related systems, a
warning message will appear and
the system will turn off automatically.
We recommend that you immediate-
ly have the vehicle inspected by an
authorized retailer of Genesis
Branded products.
Limitations of the System
Parking Collision-Avoidance Assist-
Reverse system may not assist brak-
ing or alert the driver under the fol-
lowing conditions even if there are
pedestrians or objects.
• Any non-factory equipment or
accessories have been installed.
• The condition of the vehicle is
unstable due to an accident or
other causes.
• The height of the bumper or the
sensor installation has been modi-
fied.
• The rear view camera or the ultra-
sonic sensor(s) is damaged.
• The rear view camera or the ultra-
sonic sensor(s) is stained with for-
eign matter, such as snow, dirt, etc.
• The rear view camera is obscured
by a light source or by bad weath-
er conditions, such as heavy rain,
fog, snow, etc.
• The surrounding is either too dark
or too bright.
• Outside air temperature is hot or
cold.
• The wind is either strong (over 12
mph (20 km/h)) or blowing perpen-
dicular to the rear bumper.
• Objects generating excessive
noise, such as vehicle horns, loud
motorcycle engines, or truck air
brakes, are near the vehicle.
• An ultrasonic sensor with a similar
frequency is near the vehicle.
• There is ground height difference
between the vehicle and the
pedestrian.
• The image of the pedestrian in the
rear view camera is indistinguish-
able from the background.
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Driving your vehicle
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5-108
• The vehicle stops and goes repeat-
edly for a long period of time.
• The accelerator pedal is continu-
ously depressed for a long period
of time.
• The engine performance is abnor-
mal.
• Engine rpm is in the red zone.
• The driver starts driving by pushing
the toggle switch up (RES+)/down
(SET-) or depressing the accelera-
tor pedal, after the vehicle is
stopped by the Smart Cruise
Control system with no other vehi-
cle ahead.
• The driver starts driving by pushing
the toggle switch up (RES+)/down
(SET-) or depressing the accelera-
tor pedal, after stopping the vehicle
with a vehicle stopped far away in
front.
• The braking control is operated for
FCA (Forward Collision-Avoidance
Assist)
• The engine is stopped by ISG (Idle
Stop & Go) (if equipped).
Each of these actions will cancel the
Smart Cruise Control operation. The
Set Speed and Vehicle-to-Vehicle
Distance on the cluster LCD display
will go off.
In a condition the Smart Cruise
Control is canceled automatically,
the Smart Cruise Control will not
resume even though the RES+ or
SET- toggle switch is pushed.
Also, if the Smart Cruise Control is
canceled automatically while the
vehicle is at a standstill, EPB
(Electronic Parking Brake) will be
applied.Information
If the Smart Cruise Control is can-
celed during a situation that is not
described, have the system checked by
an authorized retailer of Genesis
Branded products.
Smart Cruise Control canceled
If the system is canceled, the warn-
ing chime will sound and a message
will appear for a few seconds.
You must adjust the vehicle speed by
depressing the accelerator or brake
pedal according to the road and driv-
ing conditions.
Always check the road conditions.
Do not rely on the warning chime.
i
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Driving your vehicle

5-120
The Leading Vehicle Departure Alert
system alerts the driver of the depar-
ture of the vehicle in front when the
vehicle is stopped and the Smart
Cruise Control system is operating.
System Setting and Operation
System setting
The Leading Vehicle Departure Alert
can be activated from the Settings
menu in the AVN system screen by
following the procedure below.
1. Set the Engine Start/Stop button
to the ON or START position.
2. Select 'Setup →Vehicle Settings
→Driver Assistance →Leading
Vehicle Departure Alert' in the
AVN system screen.For detailed
information, scan the QR code
in a separately supplied simple
manual.
System standby
Use switch or pedal to accelerate
While the Smart Cruise Control sys-
tem is operating, your vehicle stops
behind the vehicle in front when it
stops. The message shown above is
displayed on the cluster within 3 sec-
onds after the stop and the system
will be in the standby position.
System operation
Leading vehicle is driving away
If the driver does not take action for a
certain period of time after the vehi-
cle in front departs, the message
shown above is displayed on the
cluster.
The vehicle departs automatically if
the accelerator pedal is depressed or
RES+ or SET- toggle switch is
pushed up or down when there is a
vehicle in front.
The Smart Cruise Control system is
deactivated if the accelerator pedal
is depressed or RES+ or SET- tog-
gle switch is pushed up or down
when there is no vehicle in front.
LEADING VEHICLE DEPARTURE ALERT
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OHI058272L
Always check the front of the
vehicle and road conditions
before departure.
WARNING
Driving your vehicle

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05
Check Lane Keeping Assist
(LKA) system
If there is a problem with the system
a message will appear for a few sec-
onds. If the problem continues the
LKA system failure indicator will illu-
minate.
LKA system indicator
The LKA system indica-
tor (yellow) will illuminate
if the LKA system is not
working properly. Have
the system checked by
an authorized retailer of
Genesis Branded prod-
ucts.
When there is a problem with the
system do one of the following:
• Turn the system on after turning
the engine off and on again.
• Check if the Engine Start/Stop but-
ton is in the ON position.
• Check if the system is affected by the
weather (e.g. fog, heavy rain, etc.).
• Check if there is foreign matter on
the camera lens.
If the problem is not solved, we rec-
ommend that the system be checked
by an authorized retailer of Genesis
Branded products.
The LKA system will not be in the
ENABLED state and/or the steering
wheel will not be assisted when:
• The turn signal is turned on before
changing a lane. If you change
lanes without the turn signal on,
the steering wheel might be con-
trolled.
• The vehicle is not driven in the mid-
dle of the lane when the system is
turned on or right after changing a
lane.
• ESC (Electronic Stability Control) or
VSM (Vehicle Stability Management)
is activated.
• The vehicle is driven on a sharp
curve.
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5-144
The Blind-Spot View Monitor system
displays the left or right side of the
rear blind spot area of your vehicle in
the instrument cluster when the left
or right turn signal is on. This function
helps you drive safely when chang-
ing lanes.
• The system is activated when the
following steps are performed.
1. The engine is running.
2. The turn signal is turned on.
• The system is deactivated when
one of the following is performed.
- The Engine Start/Stop button is in
the OFF position.
- The turn signal is turned off
- The hazard warning flasher is on
- A warning screen pops up and
takes priority over the Blind-Spot
View Monitor system.
BLIND-SPOT VIEW MONITOR SYSTEM
• This system is a supplemental
system only. It is the responsi-
bility of the driver to always
check the area around the
vehicle before and while mak-
ing turns or changing lanes.
• ALWAYS look around your
vehicle to make sure there are
no objects or obstacles
before moving the vehicle in
any direction to prevent a col-
lision.
• Objects are closer than they
appear. Failure to visually
confirm that is safe to change
the lane before doing so may
result in crash and serious
injury or death.
• Always keep the camera lens
clean. The camera may not
work normally if the lens is
covered with foreign sub-
stance.
WARNING
OHI048526
■Left
■Right
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Driving your vehicle

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05
Resetting the System
• The last break time is set to 00:00
and the driver's attention level is
set to 5 (very attentive) when the
driver resets the Driver Attention
Warning system.
• The Driver Attention Warning sys-
tem resets the last break time to
00:00 and the driver's attention
level to 5 in the following situations.
- The engine is turned OFF.
- The driver unfastens the seat belt
and then opens the driver's door.
- The vehicle is stopped for more
than 10 minutes.
• The Driver Attention Warning sys-
tem operates again, when the driv-
er restarts driving.
System Standby
The Driver Attention Warning system
enters the ready status and displays
the 'Standby' screen in the following
situations.
- The system is unable to collect data
to monitor the driver's driving condi-
tions.
- Driving speed remains over 110
mph (177 km/h).
System Malfunction
Check Driver Attention Warning
(DAW) system
When the "Check Driver Attention
Warning system" warning message
appears, the system is not working
properly. In this case, have the vehicle
inspected by an authorized retailer of
Genesis Branded products.
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OHI048141L
• The Driver Attention Warning
system is not a substitute for
safe driving practices, but a
convenience function only. It
is the responsibility of the
driver to always drive cau-
tiously to prevent unexpected
and sudden situations from
occurring. Pay attention to the
road conditions at all times.
• The driver who feels fatigued
should take a break, even
though there is no break sug-
gestion by the Driver Attention
Warning system.
WARNING