brake GENESIS G90 2021 Workshop Manual

Information
• Do not drive in water if the level is
higher than the bottom of the vehi-
cle.
• Check your brake condition once
you are out of mud or water.
Depress the brake pedal several
times as you move slowly until you
feel normal braking return.
• Shorten your scheduled mainte-
nance interval if you drive in off-
road conditions such as sand, mud
or water (see "Maintenance Under
Severe Usage Conditions" in chap-
ter 7).
• Make sure that an AWD vehicle is
towed by flatbed tow truck.
For safe AWD operation
Before driving
• Make sure all passengers are
wearing seat belts.
• Sit upright and adjust the steering
wheel to a position comfortable for
you to drive.
Driving on snow-covered or icy
roads
• Start off slowly by applying the
accelerator pedal gently.
• Use of snow tires is recommended.
For more information on Snow
Tires refer to "Winter Driving" in
this chapter.
• Keep sufficient distance between
your vehicle and the vehicle in front
of you.
• When approaching a stop sign or
stop light, release the accelerator
pedal to provide engine braking
during deceleration.
• Avoid speeding, rapid acceleration,
sudden brake applications, and
sharp turns to prevent skids.
i
5-40
Driving your vehicle

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.
i
NOTICE
5-41
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

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.
5-43
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

5-47
05
When SMART is selected for CUS-
TOM mode
SMART mode automatically controls
the vehicle driving, such as gear
shifting patterns, engine torque, rid-
ing quality (if equipped with the elec-
tronic suspension system), and
power distribution (if equipped with
the All-Wheel Drive system), in
accordance with the driver's driving
habits.
Information
• When you mildly drive the vehicle
in SMART mode, the driving mode
changes to ECO mode to improve
fuel efficiency. However, the actual
fuel efficiency may differ in accor-
dance with your driving situations
(i.e. upward/downward slope, vehi-
cle deceleration/acceleration).
• When you dynamically drive the
vehicle in SMART mode by abrupt-
ly decelerating or sharply turning
the driving mode changes to SPORT
mode. However, it may adversely
affect fuel economy.
• Various driving situations, which
you may encounter in SMART
mode
- The driving mode automatically
changes to ECO mode after a
certain period of time, when you
gently depress the accelerator
pedal (Your driving is categorized
to be economic.).
- The driving mode automatically
changes from SMART ECO
mode to SMART COMFORT
mode after a certain period of
time, when you sharply or repeti-
tively depress the accelerator
pedal.- The driving mode automatically
changes to SMART COMFORT
mode with the same driving pat-
terns, when the vehicle starts to
drive on an upward slope of a
certain angle. The driving mode
automatically returns to SMART
ECO mode, when the vehicle
enters a leveled road.
- The driving mode automatically
changes to SMART SPORT,
when you abruptly accelerate the
vehicle or repetitively operate the
steering wheel (Your driving is
categorized to be sporty.). In this
mode, your vehicle drives in a
lower gear for abrupt accelerat-
ing/decelerating and increases
the engine brake performance.
- You may still sense the engine
braking performance, even when
you release the accelerator pedal
in SMART SPORT mode. It is
because your vehicle remains in
lower gear over a certain period
of time for next acceleration.
Thus, it is a normal driving situa-
tion, not indicating any malfunc-
tion.
- The driving mode automatically
changes to SMART SPORT
mode only in harsh driving situa-
tions. In most of the normal driv-
ing situations, the driving mode
sets to be either in SMART ECO
mode or in SMART COMFORT
mode.
i

When certain conditions are met, the
engine is automatically decoupled
from the transmission while the shift
lever is remained in D (Drive). In this
Coasting mode, the engine stays at
idling speed to reduce fuel consump-
tion and increase coasting distance.
Coasting Setting
The Coasting function must be
turned ON from the Settings menu in
the AVN system screen. Select:
- Setup →Vehicle Settings →Drive
Mode →Coasting
For detailed information, scan the
QR code in a separately supplied
simple manual.
When Coasting is turned ON and the
conditions are met, the function
operates with a "Coasting" message
illuminated at the top center of the
instrument cluster.
• If the accelerator pedal is
pressed quickly for accelerating
with the Coasting function in
operation, acceleration may
occur after the engagement of
the clutch inside the transmis-
sion. In turn, the driver may con-
tinue to feel acceleration even
after the system is turned off.
• Driving with the Coasting func-
tion off may be required in some
cases since the engine brake is
not applied while the Coasting
function is in operation.
• Operating the AVN system
screen to activate or deactivate
the Coasting function while driv-
ing may be dangerous as the dri-
ver's attention is dispersed.
Coasting Operating
Conditions
The Coasting function will operate
when the accelerator pedal is
depressed and released under the
following conditions.
• The driving mode is ECO mode.
• SMART is selected for Engine/
Transmission in CUSTOM mode
from the AVN system screen and
driver acceleration is SMART ECO
• ECO is selected for Engine/
Transmission in CUSTOM mode
from the AVN system screen
• The shift lever is in D (Drive)
• The Smart Cruise Control button is
OFF
• The accelerator or brake pedal is
not depressed
• The vehicle's speed is within
35–100 mph (55–160 km/h) range
• The road gradient is within -5~+5%
range
• In SMART mode, if the distance
between the vehicle ahead and the
relative speed is within a certain
range
Information
• If the front radar for smart cruise
control system cannot operate nor-
mally, the inter-vehicle distance and
relative speed condition are auto-
matically ignored.
• The Coasting function works after
the engine is turned on, the trans-
mission is warmed up, and the
engine sensor self-diagnosis is com-
pleted after starting.
• Depending on the driving situation,
Coasting operation may be tem-
porarily delayed even if the above
conditions are met.
i
NOTICE
COASTING (IF EQUIPPED)
5-49
05

Prerequisite for activation
The FCA system will activate when
'Active Assist' or 'Warning Only' under
Forward Safety is selected in the AVN
system screen, and when the follow-
ing prerequisites are satisfied.
• ESC (Electronic Stability Control)
is on.
• Vehicle speed is over 5 mph (8
km/h). (The FCA is only activated
within a certain speed range.)
• The system detects a pedestrian,
cyclist or a vehicle in front, which
may collide with your vehicle.
However, FCA may not be activat-
ed or may only sound a warning
alarm depending on the driving or
vehicle conditions.
FCA may not operate properly
according to the frontal situation or
the direction of a pedestrian or
cyclist.
FCA Warning Message and
Brake Control
FCA produces warning messages,
warning alarms, and emergency
braking based on the level of risk of
a frontal collision, such as when a
vehicle ahead suddenly brakes, or
the system detects that a collision
with a pedestrian or cyclist is immi-
nent.
5-53
05
• To avoid driver distractions,
do not attempt to set or can-
cel the FCA while driving the
vehicle. Always completely
stop the vehicle at a safe
place before setting or cancel-
ing the system.
• FCA automatically activates
upon placing the Engine
Start/Stop button to the ON or
START position. The driver
can deactivate FCA by cancel-
ing the system setting in the
AVN system screen.
• FCA automatically deacti-
vates upon canceling ESC.
When ESC is canceled, FCA
cannot be activated in the
AVN system screen. In this sit-
uation, the FCA warning light
will illuminate which is nor-
mal.
WARNING

Collision Warning (First warning)
• The warning message appears on
the cluster LCD display with a
warning chime. Additionally, some
vehicle system intervention occurs
by the engine management system
to help decelerate the vehicle.
• Your vehicle speed may decelerate
moderately.
• If FCA detects a vehicle in front,
the system operates when your
vehicle speed is between 5 mph (8
km/h) and 112 mph (180 km/h).
Maximum vehicle speed may
decrease depending on the condi-
tion of the vehicle ahead and sur-
roundings.
• If FCA detects a pedestrian or
cyclist in front, the system operates
when your vehicle speed is
between 5 mph (8 km/h) and 56
mph (90 km/h). Maximum vehicle
speed may decrease depending
on the condition of the pedestrian
ahead and surroundings.
• If you select 'Warning only' for the
system setting, the FCA system
activates and produces only warn-
ing alarms in accordance with the
collision risk levels. You should
control the brake directly because
the FCA system will not control the
brake.
Emergency braking
(Second warning)
• The warning message appears on
the cluster LCD display with a
warning chime. Additionally, some
vehicle system intervention occurs
by the engine management system
to help decelerate the vehicle.
• The brake control is maximized
just before a collision, reducing
impact when it strikes a forward
vehicle.
• If FCA detects a vehicle in front, the
system operates when your vehicle
speed is above 5 mph (8 km/h) and
47 mph (75 km/h) or under.
Maximum vehicle speed may
decrease depending on the condi-
tion of the vehicle ahead and sur-
roundings.
• If FCA detects a pedestrian or
cyclist in front, the system operates
when your vehicle speed is 5 mph
(8 km/h) or above and under 40
mph (65 km/h). Maximum vehicle
speed may decrease depending
on the condition of the pedestrian
ahead and surroundings.
5-54
Driving your vehicle
OHI058238L
OHI058237L

• If you select 'Warning only' for the
system setting, the FCA system
activates and produces only warn-
ing alarms in accordance with the
collision risk levels. You should
control the brake directly because
the FCA system do not control the
brake.
Brake operation
• In an urgent situation, the braking
system enters into the ready status
for prompt reaction against the dri-
ver's depressing the brake pedal.
• The FCA provides additional brak-
ing power for optimum braking per-
formance, when the driver
depresses the brake pedal.
• The braking control is automatical-
ly deactivated, when the driver
sharply depresses the accelerator
pedal, or when the driver abruptly
operates the steering wheel.
• The FCA brake control is automat-
ically canceled, when risk factors
disappear.
5-55
05
• The driver should always use
extreme caution while operat-
ing the vehicle, whether or not
there is a warning message or
alarm from the FCA system.
• After the brake control is acti-
vated, the driver must immedi-
ately depress the brake pedal
and check the surroundings.
The brake activation by the
system lasts for about 2 sec-
onds.
CAUTION
• If any other warning sound
such as seat belt warning
chime is already generated, the
Forward Collision-Avoidance
Assist system warning may not
sound.
• Playing the vehicle audio sys-
tem at high volume may pre-
vent occupants from hearing
the system warning sounds.
The braking control cannot
completely stop the vehicle nor
avoid all collisions. The driver
should hold the responsibility
to safely drive and control the
vehicle.
WARNING
The FCA system logic operates
within certain parameters, such
as the distance from the vehi-
cle, pedestrian or cyclist (if
equipped) ahead, the speed of
the vehicle ahead, and the dri-
ver's vehicle speed. Certain
conditions such as inclement
weather and road conditions
may affect the operation of the
FCA system.
WARNING
Never deliberately drive danger-
ously to activate the system.
WARNING

5-58
Driving your vehicle
System Malfunction
Check Forward Collision-
Avoidance Assist system
• When FCA is not working properly,
the FCA warning light ( ) will illu-
minate and the warning message
will appear for a few seconds. After
the message disappears, the mas-
ter warning light ( ) will illumi-
nate. In this case, have the vehicle
inspected by an authorized retailer
of Genesis Branded products.
• The FCA warning message may
appear along with the illumination
of the ESC (Electronic Stability
Control) warning light. Both FCA
warning light and warning mes-
sage will disappear once the ESC
warning light issue is resolved.
OHI048200L
• FCA is only a supplemental
system for the driver's con-
venience. It is the driver's
responsibility to control the
vehicle operation. Do not
solely depend on the FCA
system. Rather, maintain a
safe braking distance, and, if
necessary, depress the brake
pedal to reduce the driving
speed or to stop the vehicle.
WARNING
• In certain instances and
under certain driving condi-
tions, the FCA system may
produce a warning alarm and
control the brake system
unnecessarily. And, the FCA
system may not produce a
warning alarm and control the
brake system due to detecting
limitation of sensor.
Also due to sensing limita-
tions, in certain situations, the
front radar sensor or camera
recognition system may not
detect the vehicle, pedestrian
or cyclist ahead. The FCA sys-
tem may not activate and the
warning message may not be
displayed.
• Even if there is any problem
with the brake control func-
tion of the FCA system, the
vehicle's basic braking per-
formance will operate normal-
ly. However, brake control
function for avoiding collision
will not activate.
• If the vehicle in front stops
suddenly, you may have less
control of the brake system.
Therefore, always keep a safe
distance between your vehicle
and the vehicle in front of you.
• The FCA system may activate
during braking and the vehi-
cle may stop suddenly shift-
ing loose objects toward the
passengers. Always keep
loose objects secured.
• The FCA system may not acti-
vate if the driver applies the
brake pedal to avoid collision.

5-59
05
Limitations of the System
The Forward Collision-Avoidance
Assist system is designed to monitor
the vehicle ahead or a pedestrian or
cyclist in the roadway through radar
signals and camera recognition to
warn the driver that a collision is
imminent, and if necessary, apply
emergency braking.
In certain situations, the radar sensor
or the camera may not be able to
detect the vehicle, pedestrian or
cyclist ahead. In these cases, the
FCA system may not operate nor-
mally. The driver must pay careful
attention in the following situations
where the FCA operation may be
limited.
Detecting vehicles
The sensor may be limited when:
• The system may not operate for 15
seconds after the engine is started
or the camera is initialized
• The radar sensor or camera is cov-
ered with a foreign object or debris
• The camera lens is contaminated
due to tinted, filmed or coated
windshield, damaged glass, or
stuck of foreign matter (sticker,
bug, etc.) on the glass
• Inclement weather such as heavy
rain or snow obscures the field of
view of the radar sensor or camera
• There is interference by electro-
magnetic waves
• There is severe irregular reflection
from the radar sensor
• The radar/camera sensor recogni-
tion is limited
• The vehicle in front is too small to
be detected (for example a motor-
cycle or a bicycle, etc.) • The FCA system does not
operate when the vehicle is in
reverse.
• The FCA system is not
designed to detect other
objects on the road such as
animals.
• The FCA system does not
detect vehicles in the oppo-
site lane.
• The FCA system does not
detect cross traffic vehicles
that are approaching.
• The FCA system cannot
detect cross traffic cyclists
that are approaching.
• The FCA system cannot
detect vehicles that are
stopped vertically to your
vehicle at a intersection or
dead end street.
In these cases, you must main-
tain a safe braking distance,
and if necessary, depress the
brake pedal to reduce the driv-
ing speed in order to maintain a
safe distance or to stop the
vehicle.
WARNING
• The brake control may not
work, possibly causing a colli-
sion, if a vehicle in front
abruptly stops. Always pay
extreme caution.
• Occupants may get injured, if
the vehicle abruptly stops by
the activated FCA system. Pay
extreme caution.
• The FCA system operates
only when the system detect
vehicles, pedestrian or cyclist
in front of the vehicle.