2023 GENESIS G90 check engine light

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03
How Does the Air Bags System
Operate?
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The SRS consists of the following
components:
M Driver’s front air bag module
N Passenger’s front air bag module
O Front center side air bag module
P Side air bag modules
Q Curtain air bag modules
R Front retractor pre-tensioner
S Air bag warning light
T SRS control module (SRSCM) /
Rollover sensor
U Front impact sensors
V Side impact sensors
Side pressure sensors
Driver’s knee air bag module
Driver’s and front passenger’s seat belt
buckle sensors
Rear retractor pre-tensioner (if
equipped)
Occupant classification systemThe SRSCM (Supplemental Restraint
System Control Module) continually
monitors all SRS components while
the Engine Start/Stop button is ON to
determine if a crash impact is severe
enough to require air bag deployment or
pre-tensioner seat belt deployment.
SRS warning light
The SRS (Supplemental Restraint System)
air bag warning light on the instrument
panel displays the air bag symbol
depicted in the illustration. The system
checks the air bag electrical system for
malfunctions. The light indicates that
there is a potential problem with your air
bag system, which could include your
side and/or curtain air bags used for
rollover protection.

4
High beam indicator light ....................................................................................... 4-19
Low beam indicator light ........................................................................................4-20
Light ON indicator light ...........................................................................................4-20
High Beam Assist indicator light .............................................................................4-20
AUTO HOLD indicator light .....................................................................................4-20
LCD Display Messages ................................................................................................4-21
Vehicle is on ..............................................................................................................4-21
Shift to P ....................................................................................................................4-21
Vehicle is in N. Press START button and shift to P ..................................................4-21
Low key battery ........................................................................................................4-21
Press brake pedal to start engine ...........................................................................4-21
Key not in vehicle .....................................................................................................4-21
Key not detected .......................................................................................................4-21
Press START button again .......................................................................................4-21
Press START button with key ................................................................................... 4-22
Check BRAKE SWITCH fuse ................................................................................... 4-22
Shift to P or N to start engine .................................................................................. 4-22
Battery discharging due to external electrical devices ......................................... 4-22
Check rear wheel steering system .......................................................................... 4-22
Door, Hood, trunk open indicator ........................................................................... 4-23
Sunroof open indicator ............................................................................................ 4-23
Low tire pressure ..................................................................................................... 4-23
Lights ........................................................................................................................4-24
Wiper ........................................................................................................................ 4-24
Low washer fluid ...................................................................................................... 4-25
Low fuel .................................................................................................................... 4-25
Low engine oil .......................................................................................................... 4-25
Engine overheated ................................................................................................... 4-25
Check haptic steering wheel system ...................................................................... 4-25
Check headlight ....................................................................................................... 4-25
Check turn signal ..................................................................................................... 4-25
Check headlight LED ............................................................................................... 4-25
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4-10
Instrument Cluster, Armrest touchscreen, Infotainment system
Transmission Shift Indicator
Automatic transmission shift
indicator
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This indicator informs the current gear
engaged.
Warning and Indicator Lights
Information
Make sure that all warning lights are OFF
after starting the engine. If any light is still
ON, this indicates a situation that needs
attention.
Seat belt warning light
This warning light informs the driver that
the seat belt is not fastened.
For more details, refer to “Seat Belts”
section in chapter 3.
Air bag warning light
This warning light illuminates:
• When you set the Engine Start/Stop
button to the ON position.
-The air bag warning light illuminates
for about 6 seconds and then turns
off when all checks have been
performed.
• The air bag warning light will remain
illuminated if there is a malfunction
with the Safety Restraint System (SRS)
air bag operation.
If this occurs, have the vehicle
inspected by an authorized retailer of
Genesis Branded products.
004_RS4_HMA.indd 4-102022-04-06  3:02:29

4-11
04
Parking brake & Brake fluid
warning light
This warning light illuminates:
• When you set the Engine Start/Stop
button to the ON position.
-The parking brake & brake fluid
warning light illuminates for about 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 the
reservoir is low.
If the brake fluid level in the reservoir 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” section in
chapter 9). 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 properly, do
not drive the vehicle. Have the vehicle
inspected by an authorized retailer of
Genesis Branded products.
Dual-diagonal braking system
Your vehicle is equipped with dual-
diagonal braking system. This means you
still have braking on two wheels even if
one of the dual systems should fail.
With only one of the dual systems
working, more than normal pedal travel
and greater pedal pressure is required to
stop the vehicle.
Also, the vehicle 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 vehicle as soon as it
is safe to do so.
WARNING
Parking Brake & Brake Fluid warning
light
Driving the vehicle with a warning light
ON is dangerous. If the Parking Brake
& Brake Fluid warning light illuminates
with the parking brake released, it
indicates that the brake fluid level is
low.
If this occurs, have the vehicle
inspected by an authorized retailer of
Genesis Branded products.
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4-13
04
Electric Power Steering (EPS)
warning light
This warning light illuminates:
• When you set the Engine Start/Stop
button to the ON position.
-The electric powering steering
warning light illuminates for about 3
seconds and then goes off.
• Whenever there is a malfunction with
the electric power steering.
If this occurs, have the vehicle
inspected by an authorized retailer of
Genesis Branded products.
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, have the vehicle
inspected by an authorized retailer of
Genesis Branded products as soon as
possible.
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” section in chapter 9). If
the level is low, add oil as required.
If the warning light remains on after
adding oil or if oil is not available, have
the vehicle inspected by an authorized
retailer of Genesis Branded products
as soon as possible.
Continued driving with the warning
light on may cause engine failure.
Information
3.5T-GDI, 3.5T-GDI 48 V MHEV
When engine oil pressure decreases due to
insufficient engine oil, etc., the Engine Oil
Pressure warning light will illuminate. In
addition, the enhanced engine protection
system which limits engine power will
be activated. If the engine oil pressure is
restored, the Engine Oil Pressure warning
light and the enhanced engine protection
system will turn off.
However, when the engine oil pressure
is restored, the warning light and the
enhanced engine protection system will
turn off after the engine is restarted.
NOTICE
If the engine is not stopped
immediately after the Engine Oil
Pressure warning light is illuminated
while the engine is running, severe
damage could result.
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Instrument Cluster, Armrest touchscreen, Infotainment system
Press START button with key
(if equipped)
This message is displayed if you press
the Engine Start/Stop button while the
warning message “Key not detected” 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 before starting the engine.
If that is not possible, you can start the
engine by pressing the Engine Start/
Stop button for 10 seconds in the ACC
position.
Shift to P or N to start engine
This message is displayed if you try to
start the engine in any other position
except P (Park) or N (Neutral).
Information
You can start the engine with the gear
in N (Neutral). But, for your safety, we
recommend that you start the engine with
the gear shifted to P (Park).
Battery discharging due to external
electrical devices (if equipped)
This message is displayed if the 12V
battery voltage is weak due to any
non-factory electrical accessories (ex.
dashboard camera) while parking. Be
careful that the battery is not discharged.
If the message appears after removing
the non-factory electrical accessories,
have the vehicle inspected by an
authorized retailer of Genesis Branded
products.
Check rear wheel steering system
(if equipped)
This message is displayed if the rear
wheel steering system or related
devices is not working properly. Also,
The warning light will illuminate on the
cluster. If the message appares after
engine is restarted, have the vehicle
inspected by an authorized retailer of
Genesis Branded products.
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04
Low washer fluid
This message is displayed if the washer
fluid level in the reservoir is nearly empty.
Have the washer fluid reservoir refilled.
Low fuel
This message is displayed if the fuel tank
is almost out of fuel.
When this message is displayed, the low
fuel level warning light in the cluster will
come on.
It is recommended to look for the nearest
fueling station and refuel as soon as
possible.
Low engine oil (if equipped)
This warning message is displayed when
the engine oil level should be checked.
If this warning message is displayed,
check the engine oil level as soon as
possible and add engine oil as required.
Slowly pour the recommended oil little
by little into a funnel.
Use only the specified engine oil. (Refer
to "Recommended Lubricants and
Capacities“ section in chapter 2.)
Do not overfill the engine oil. Make sure
the oil level is not above F (Full) mark on
the dipstick.
Information
After adding engine oil, if you travel
approximately 31~62 miles (50~100 km)
after the engine warms up, the warning
message should disappear.
Engine overheated
This message is displayed when the
engine coolant temperature is above
248°F (120°C). This means that the
engine is overheated and may be
damaged.
If your vehicle is overheated, refer to
“Overheating” section in chapter 8.
Check haptic steering wheel system
This message is displayed if there is a
problem with the haptic steering wheel
system. Have the vehicle inspected by an
authorized retailer of Genesis Branded
products.
Check headlight (if equipped)
This message is displayed if the
headlights are not operating properly. A
lamp may need to be replaced.
Make sure to replace the burned out
bulb with a new one of the same wattage
rating.
Check turn signal (if equipped)
This message is displayed if the turn
signal lamps are not operating properly.
A lamp may need to be replaced.
Make sure to replace the burned out
bulb with a new one of the same wattage
rating.
Check headlight LED (if equipped)
This message is displayed if there is a
problem with the LED headlight. Have
the vehicle inspected by an authorized
retailer of Genesis Branded products.
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05
Motor Driven Power Steering
(MDPS)
The system assists you with steering the
vehicle. If the vehicle 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.
CAUTION
If Motor Driven Power Steering does not
operate normally, the warning light
and the message ‘Check motor driven
power steering’ will illuminate on the
instrument cluster. You may steer the
vehicle, but it will require increased
steering efforts. Take the vehicle to an
authorized retailer of Genesis Branded
products and have the system checked
as soon as possible.
Information
The following symptoms may occur during
normal vehicle operation:

[The steering effort may be high
immediately after pressing the Engine
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This happens as the system performs
the MDPS system diagnostics. When
the diagnostics are completed, the
steering wheel effort 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
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[Motor noise may be heard when the
vehicle is at a stop or at a low driving
speed.

[When you operate the steering wheel
in low temperatures, abnormal noise
may occur. If the temperature rises, the
noise will disappear. This is a normal
condition.

[When an error is detected from MDPS,
the steering effort assist function will
not be activated in order to prevent
fatal accidents. Instrument cluster
warning lights may be on or the
steering effort may be high. If these
symptoms occur, drive the vehicle to
a safe area as soon as it is safe to do
so. Have the system checked by an
authorized retailer of Genesis Branded
products as soon as possible.
STEERING WHEEL