2021 GENESIS G90 check engine

3-19
03
The Smart Posture Care system
automatically provides a healthy pos-
ture (position) for the driver's back,
and sets the steering wheel, outer
side view mirrors, head-up display
positions according to the driver's
body measurements.
Information
If the Seat Posture Care System does
not operate normally, have the system
checked by an authorized retailer of
Genesis Branded products.1. Check that the gear is in P (Park)
while the Engine Start/Stop button
is in the ON position.
2. Press the SMART button on the
driver's door or select 'Setup →
Vehicle Settings →Convenience
→Smart Posture Care' from the
Settings menu in the AVN system
screen.
3. Enter information (Height, Pants
Inseam Length, Weight) in the
AVN system screen.
4. After entering the driver’s informa-
tion, press 'Adjust Posture'. The
driver’s seat, steering wheel, side
view mirror and head-up display
will be adjusted.
5. Press 'Save' and save the adjust-
ed seat position in 'Driver 1' or
'Driver 2'.
Reference table
For detailed information, scan the
QR code in a separately supplied
simple manual.
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SMART POSTURE CARE SYSTEM (IF EQUIPPED)
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Height4' 9'' ~ 6' 6"
Pants
Inseam
Length
Short/Average/Tall
Weight109 lbs. or Below ~
264 lbs. or Above

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Convenient features of your vehicle
STEERING WHEEL
Motor-Driven Power Steering
(MDPS)
The system assists you with steering
the vehicle. If the engine is turned off
or if the power steering system
becomes inoperative, you may still
steer the vehicle, but it will require
increased steering effort.
Should you notice any change in the
effort required to steer during normal
vehicle operation, have the system
checked by an authorized retailer of
Genesis Branded products.
If the Motor-Driven Power Steering
(MDPS) System does not operate
normally, the warning light ( )
will illuminate on the instrument
cluster. You may steer the vehicle,
but it will require increased steer-
ing efforts. Take your vehicle to an
authorized retailer of Genesis
Branded products and have the
system checked as soon as possi-
ble.
Information
The following symptoms may occur
during normal vehicle operation:
• The steering effort may be high
immediately after the Engine
Start/Stop button is in the ON posi-
tion.
This happens as the system per-
forms the MDPS system diagnostics.
When the diagnostics is completed,
the steering wheel will return to its
normal condition.
• When the battery voltage is low, you
might have to put more steering
effort. However, it is a temporary
condition so that it will return to
normal condition after charging the
battery.
• A click noise may be heard from the
MDPS relay after the Engine
Start/Stop button is in the ON or
OFF position.
• Motor noise may be heard when the
vehicle is at a stop or at a low driv-
ing speed.
• When you operate the steering
wheel in low temperatures, abnor-
mal noise may occur. If the temper-
ature rises, the noise will disappear.
This is a normal condition.
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NOTICE

3-35
03
To reset the power windows
If the power windows do not operate
normally, the automatic power win-
dow system must be reset as follows:
1. Place the Engine Start/Stop button
is in the ON position.
2. Close the window and continue
pulling up on the power window
switch for at least one second.
If the power windows do not operate
properly after resetting, have the
system checked by an authorized
retailer of Genesis Branded prod-
ucts.
Automatic reverse (if equipped)
If a window senses any obstacle
while it is closing automatically, it will
stop and lower approximately 12
inches (30 cm) to allow the object to
be cleared.
If the window detects the resistance
while the power window switch is
pulled up continuously, the window
will stop upward movement then
lower approximately 1 inch (2.5 cm).
If the power window switch is pulled
up continuously again within 5 sec-
onds after the window is lowered by
the automatic window reverse fea-
ture, the automatic window reverse
will not operate.
Information
The automatic reverse feature is only
active when the "Auto Up" feature is
used by fully pulling up the switch to
the second detent.
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Make sure body parts or other
objects are safely out of the way
before closing the windows to
avoid injuries or vehicle damage.
Objects less than 0.16 inch (4
mm) in diameter caught between
the window glass and the upper
window channel may not be
detected by the automatic
reverse window and the window
will not stop and reverse direc-
tion.
WARNING
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3-41
03
Hood
Opening the hood
1. Park the vehicle and set the park-
ing brake.
2. Pull the release lever to unlatch
the hood. The hood should pop
open slightly.
3. Go to the front of the vehicle, raise
the hood slightly, push up the sec-
ondary latch (1) inside of the hood
center and lift the hood (2). After it
has been raised about halfway, it
will raise completely by itself.
Closing the hood
1. Before closing the hood, check in
and around the engine compart-
ment to ensure the following:
- Any tools or other loose objects
are removed from the engine
compartment area or hood
opening area
- All glove, rags, or other com-
bustible material is removed
from the engine compartment
- All filler caps are tightly and cor-
rectly installed
2. Lower the hood halfway (lifted
approximately 30 cm from the
closed position) and push down to
securely lock in place. Then dou-
ble check to be sure the hood is
secure. If the hood can be raised
slightly, it is not securely locked.
Open it again and close it with
more force.
EXTERIOR FEATURES
• Before closing the hood,
ensure all obstructions are
removed from around hood
opening.
• Always double check to be
sure that the hood is firmly
latched before driving away.
Check there is no hood open
warning light displayed on the
instrument cluster. Driving
with the hood opened may
cause a total loss of visibility,
which might result in an acci-
dent.
• Do not move the vehicle with
the hood in the raised posi-
tion, as vision is obstructed,
which might result in an acci-
dent, and the hood could fall
or be damaged.
WARNING
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3-52
Convenient features of your vehicle
Information
Make sure to refuel your vehicle
according to the "Fuel Requirements"
suggested in the Introduction chapter.
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• Do not get back into a vehicle
once you have begun refuel-
ing. You can generate a build-
up of static electricity by
touching, rubbing or sliding
against any item or fabric
capable of producing static
electricity. Static electricity
discharge can ignite fuel
vapors causing a fire. If you
must re-enter the vehicle, you
should once again eliminate
potentially dangerous static
electricity discharge by touch-
ing a metal part of the vehicle,
away from the fuel filler neck,
nozzle or other gasoline
source, with your bare hand.
• When using an approved
portable fuel container, be
sure to place the container on
the ground prior to refueling.
Static electricity discharge
from the container can ignite
fuel vapors causing a fire.
Once refueling has begun,
contact between your bare
hand and the vehicle should
be maintained until the filling
is complete.
• Use only approved portable
plastic fuel containers designed
to carry and store gasoline.
• When refueling, always move
the shift lever to the P (Park)
position, set the parking
brake, and place the Engine
Start/Stop button to the OFF
position. Sparks produced by
electrical components related
to the engine can ignite fuel
vapors causing a fire.• Do not use matches or a
lighter and do not smoke or
leave a lit cigarette in your
vehicle while at a gas station,
especially during refueling.
• Do not over-fill or top-off your
vehicle tank, which can cause
gasoline spillage.
• If a fire breaks out during refu-
eling, leave the vicinity of the
vehicle, and immediately con-
tact the manager of the gas
station and then contact the
local fire department. Follow
any safety instructions they
provide.
• If pressurized fuel sprays out,
it can cover your clothes or
skin and thus subject you to
the risk of fire and burns.
Always remove the fuel cap
carefully and slowly. If the cap
is venting fuel or if you hear a
hissing sound, wait until the
condition stops before com-
pletely removing the cap.
• Always check that the fuel cap
is installed securely to pre-
vent fuel spillage in the event
of an accident.

3-60
Convenient features of your vehicle
Warning and Indicator Lights
Supplemental Restraint
System Warning Light
This warning light illuminates:
• When you place the Engine Start/
Stop button to the ON position.
- The air bag warning light illumi-
nates for approximately 6 sec-
onds and then turns off when all
checks have been performed.
• The air bag warning light will
remain illuminated if there is a mal-
function with the Safety Restraint
System air bag operation.
If this occurs, have your vehicle
inspected by an authorized retailer
of Genesis Branded products.
Seat Belt Warning Light
This warning light informs the driver
that the seat belt is not fastened.
For more details, refer to the "Seat
Belts" in chapter 2.
Parking Brake & Brake
Fluid Warning Light
This warning light illuminates:
•Whenyou place the Engine Start/
Stop button to the ON position.
- The parking brake & brake fluid
warning light illuminates for
approximately 3 seconds and will
then turn off once the parking
brake is released.
• Whenever the parking brake is
applied.
• Whenever the brake fluid level in
the reservoir is low.
- If the warning light illuminates
with the parking brake released, it
indicates the brake fluid level in
reservoir is low.
If the brake fluid level in the reser-
voir is low:
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 (For more
details, refer to "Brake Fluid" in
chapter 7). After adding brake fluid,
check all brake components for fluid
leaks. If a brake fluid leak is found,
or if the warning light remains on, or
if the brakes do not operate proper-
ly, do not drive the vehicle. Have the
vehicle inspected by an authorized
retailer of Genesis Branded prod-
ucts.

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03
Charging System
Warning Light
This warning light illuminates:
When there is a malfunction with
either the alternator or electrical
charging system.
If there is a malfunction with either
the alternator or electrical charging
system:
1. Drive carefully to the nearest safe
location and stop your vehicle.
2. Turn the engine off and check the
alternator drive belt for looseness
or breakage.
If the belt is adjusted properly,
there may be a problem in the
electrical charging system.
If this occurs, we recommend that
you have the vehicle inspected by
an authorized retailer of Genesis
Branded products as soon as pos-
sible
Engine Oil Pressure
Warning Light
This warning light illuminates:
When the engine oil pressure is low.
If the engine oil pressure is low:
1. Drive carefully to the nearest safe
location and stop your vehicle.
2. Turn the engine off and check the
engine oil level (For more details,
refer to "Engine Oil" in chapter 7).
If the level is low, add oil as required.If the warning light remains on
after adding oil or if oil is not avail-
able, have the vehicle inspected
by an authorized retailer of
Genesis Branded products as
soon as possible.
• If the engine does not stop
immediately after the Engine Oil
Pressure Warning Light is illumi-
nated, severe damage could
result.
• If the warning light stays on
while the engine is running, it
indicates that there may be seri-
ous engine damage or malfunc-
tion. In this case:
1. Stop the vehicle as soon as it
is safe to do so.
2. Turn off the engine and check
the oil level. If the oil level is
low, fill the engine oil to the
proper level.
3. Start the engine again. If the
warning light stays on after
the engine is started, turn the
engine off immediately. If this
occurs, have the vehicle
inspected by an authorized
retailer of Genesis Branded
products.
NOTICE

3-72
Convenient features of your vehicle
Key not detected
This message is displayed if the smart
key is not detected when you press the
Engine Start/Stop button.
Press START button again
This message is displayed if you
were unable to start the vehicle when
the Engine Start/Stop button was
pressed.
If this occurs, attempt to start the
engine by pressing the Engine
Start/Stop button again.
If the message appears each time
you press the Engine Start/Stop but-
ton, have the vehicle inspected by an
authorized retailer of Genesis
Branded products.
Press START button with key
This message is displayed if you
press the Engine Start/Stop button
while the message “Key not detect-
ed” is displayed.
At this time, the immobilizer indicator
light blinks.
Check BRAKE SWITCH fuse
This message is displayed if the
brake switch fuse is disconnected.
You need to replace the fuse with a
new one. If that is not possible, you
can start the engine by pressing the
Engine Start/Stop button for 10 sec-
onds in the ACC position.
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