2023 GENESIS G90 alternator

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.
004_RS4_HMA.indd 4-132022-04-06  3:02:30

9-20
Maintenance
Recommended coolant

[When adding coolant, use only
deionized water, distilled water or soft
water for your vehicle and never mix
hard water in the coolant filled at the
factory.

[An incorrect coolant mixture can
result in severe malfunction or engine
damage.

[The engine in your vehicle has
aluminum engine parts and must be
protected by an phosphate-based
ethylene glycol coolant to prevent
corrosion and freezing.

[Do not use alcohol or methanol
coolant or mix them with the specified
coolant.

[Do not use a solution that contains
more than 60% antifreeze or less than
35% antifreeze, which would reduce
the effectiveness of the solution.
For mixing percentage, refer to the
following table:
Ambient
TemperatureMixture Percentage
(volume)
Antifreeze Water
5°F (-15°C) 35 65
-13°F (-25°C) 40 60
-31°F (-35°C) 50 50
-49°F (-45°C) 60 40
Information
If in doubt about the mix ratio, a 50%
water and 50% antifreeze mix is the
easiest to mix together as it will be the
same quantity of each. It is suitable to
use for most temperature ranges of -31°F
(-35°C) and higher.
Changing Coolant
Have coolant be changed by an
authorized retailer of Genesis Branded
products according to the Maintenance
Schedule at the beginning of this
chapter.
WARNING
Do not use engine coolant or antifreeze
in the washer fluid reservoir.
Engine coolant can severely obscure
visibility when sprayed on the
windshield and may cause loss of
vehicle control resulting in an accident.
Engine coolant may also cause damage
to paint and body trim.
NOTICE
To prevent damage to engine parts,
put a thick towel around the engine
coolant cap or liquid-cooled intercooler
coolant cap before refilling the
coolant to prevent the coolant from
overflowing into engine parts, such as
the alternator.

9-54
Maintenance
Engine compartment fuse panel
Type Fuse NameFuse
RatingCircuit Protected
MAINALT225A Alternator
MDPS1125A MDPS Unit
e-S/C125A[Mild HEV] Electric Super Charging Unit
(Power)
MULTICOOLING FAN100A Colling Fan Motor
IEB160A IEB Unit
IEB260A IEB Unit
AIR SUSPENSION
(ECS)50A Air Suspension (ECS) Relay
REAR HEATED150A Rear Heated #1 Relay
REAR HEATED240A Rear Heated #2 Relay
WIPER30A Wiper Motor
SBEOP30A Electronic Oil Pump
HEAD LAMP RH40A Head Lamp RH
HEAD LAMP LH40A Head Lamp LH
START30A Start Relay
MICROHORN15A PCB Block (Horn Relay)
A/C115A A/C Relay
ECU115A ECM
TCU120A TCM
FUEL PUMP20A Fuel Pump Relay
4WD20A AWD ECU