check engine GENESIS G90 2023 Owners Manual

1-5
01
Your new vehicle is designed to obtain maximum performance with UNLEADED FUEL,
as well as minimize exhaust emissions and spark plug fouling.
Your new vehicle is designed to use only unleaded fuel having an octane number
((R+M)/2) of 87 (Research Octane Number 91) or higher. For improved vehicle
performance, premium unleaded fuel with an octane number ((R+M)/2) of 91
(Research Octane Number 95) or higher is recommended. (Do not use methanol
blended fuels.)
NOTICE
To prevent damage to the engine and engine components, never add any fuel
system cleaning agents to the fuel tank other than what has been specified.
Consult an authorized retailer of Genesis Branded products for additional
information.
WARNING

[Do not “top off” after the nozzle automatically shuts off when refueling.

[Always check that the fuel cap is installed securely to prevent fuel spillage in the
event of an accident.
Gasoline containing alcohol and methanol
Gasohol, a mixture of gasoline and ethanol (also known as grain alcohol) are being
marketed along with or instead of leaded or unleaded gasoline. For example, “E15” is
a gasohol comprised of 15% ethanol and 85% gasoline. Do not use gasohol containing
more than 15% ethanol, and do not use gasoline or gasohol containing any methanol.
Either of these fuels may cause drivability problems and damage to the fuel system,
engine control system and emission control system.
Discontinue using gasohol of any kind if drivability problems occur. “E85” fuel is
an alternative fuel comprised of 85 percent ethanol and 15 percent gasoline, and is
manufactured exclusively for use in Flexible Fuel Vehicles. “E85” is not compatible
with your vehicle. Use of “E85” may result in poor engine performance and damage
to your vehicle’s engine and fuel system. Genesis Branded Vehicle recommends that
customers do not use fuel with an ethanol content exceeding 15 percent.
NOTICE
To prevent damage to your vehicle’s engine and fuel system:

[Never use gasohol which contains methanol.

[Never use gasohol containing more than 15% ethanol.

[Never use leaded fuel or leaded gasohol.

[Never use “E85” fuel.
Your New Vehicle Limited Warranty does not cover damage to the fuel system or any
performance problems caused by the use of “E85” fuel.
FUEL REQUIREMENTS

2-14
Vehicle Information, Consumer Information and Reporting Safety Defects
Recommended SAE Viscosity Number
CAUTION
Always be sure to clean the area around any filler cap, drain plug, or dipstick before
checking or draining any lubricant. This is especially important in dusty or sandy
areas and when the vehicle is used on unpaved roads. Cleaning the plug and dipstick
areas will prevent dirt and grit from entering the engine and other mechanisms that
could be damaged.
Engine oil viscosity (thickness) has an effect on fuel economy and cold weather
operating (engine start and engine oil flowability). Lower viscosity engine oils can
provide better fuel economy and cold weather performance, however, higher viscosity
engine oils are required for satisfactory lubrication in hot weather. Using oils of any
viscosity other than those recommended could result in engine damage.
When choosing an oil, consider the range of temperature your vehicle will be operated
in before the next oil change. Proceed to select the recommended oil viscosity from
the chart.
Temperature Range for SAE Viscosity Numbers
Temperature°C -30 -20 -10 0 10 20 30 40 50
(°F) -10 0 20 40 60 80 100 120
Engine Oil
0W-30 0W-30
An engine oil displaying this American Petroleum Institute(API)
Certification Mark conforms to the International Lubricant
Specification Advisory Committee (ILSAC). It is recommended
to only use engine oils that uphold this API Certification Mark.

3-63
03
How Does the Air Bags System
Operate?
ORS032054N
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
ORS042013NORS042013N
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.
004_RS4_HMA.indd 4-112022-04-06  3:02:30

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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4-22
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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4-25
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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5-28
Convenience Features
Used Vehicle/Digital Key
Maintenance
Purchasing used vehicle
If any of the digital key devices (smart
phone key, card key) are registered in
the vehicle, the ‘Digital key registered’
message appears once on the instrument
cluster when the Engine Start/Stop
button is in the ON position after
unlocking the doors. When purchasing
a used vehicle, be sure to check the
message and delete the smart phone key
and card key registered by the previous
user and inform the purchase of a used
vehicle through Genesis Customer Care.
If the card key comes with the vehicle,
check whether it operates properly.
Digital Key Maintenance
If you need to have your Digital Key
System repaired or replaced, the
registered smartphone key or card key
can be deleted.
Limitations of the System

[Genesis digital key may not operate if
any of the following occurs:
- The smart phone battery or the
vehicle battery is discharged
- NFC or Bluetooth is turned off in the
smart phone settings
- A credit card is near your smart
phone, or a metal or thick smart
phone case is used
- The card key is near other cards, or
used in a wallet or card holder
- There is electronic interference by
other vehicles, objects, etc.

[The vehicle may not be controlled
by the smart phone if any of the
following occurs:
- The basic necessary functions of the
smart phone are operating (general
call, urgent call, audio, etc.)
- Using a wireless earphone (general
call, urgent call, audio, etc.)