park assist Abarth 124 Spider 2021 Owner handbook (in English)

Super-LSD operation
Straight ahead driving
When driving straight, the right and left
side gears rotate at the same speed,
and the pinion and side gears rotate
together with the differential gear case.
Input force from the ring gear is
transmitted to the pinion gears via the
gear case and to the drive shaft via the
side gears. Due to this, a speed
difference between right and left in the
differential does not occur.
Differential operation
If the rotation speed between the right
and left wheels becomes different
(during normal driving), the pinion gears
rotate together while revolving around
the center axle of the drive shaft,
thereby absorbing the difference in
rotation speed. This mechanism serves
as a differential.
Limited-slip operation
If the differential encounters a condition
requiring limited-slip control such as
wheel spin, thrust force acts on the side
gears due to the reaction force from the
meshing of the pinion and side gears.
This thrust force presses the side gears
against the taper ring, generating
friction between the side gear cone and
the taper ring and reducing the torque
of the slipping wheel.The reduced torque is transmitted
without change to the wheel with higher
traction, and the limited slip differential
function is provided. The torque
transmitted to the wheel with higher
traction is proportionate to the input
torque of the ring gear.
HLA (Hill Launch Assist)
FUNCTION
80)
Hill Launch Assist (HLA) is a function
which assists the driver in accelerating
from a stop while on a slope. When the
driver releases the brake pedal and
depresses the accelerator pedal while
on a slope, the function prevents the
vehicle from rolling. The braking force is
maintained automatically after the brake
pedal is released on a steep grade.
For vehicles with a manual
transmission, Hill Launch Assist
operates on a downward slope when
the shift lever is in the reverse (R)
position, and on an upward slope when
the shift lever is in a position other than
the reverse (R) position.
For vehicles with an automatic
transmission, Hill Launch Assist
operates on a downward slope when
the selector lever is in the reverse (R)
position, and on an upward slope when
the selector lever is in a forward gear.
IMPORTANT Hill Launch Assist does
not operate on a gentle slope. In
addition, the gradient of the slope on
which the system will operate changes
depending on the vehicle's load.
IMPORTANT Hill Launch Assist does
not operate if the parking brake is
applied, the vehicle has not stopped
completely, or the clutch pedal is
released.
IMPORTANT While Hill Launch Assist is
operating, the brake pedal may feel stiff
and vibrate, however, this does not
indicate a malfunction.
IMPORTANT Hill Launch Assist does
not operate while the TCS/DSC
indicator light is illuminated. Refer to
“Warning lights and messages”
paragraph in “Knowing the instrument
panel” chapter.
IMPORTANT Hill Launch Assist (HLA)
does not turn off even if the DSC OFF
switch is pressed to turn off the
TCS/DSC.
IMPORTANT For vehicles with an
automatic transmission although the Hill
Launch Assist does not operate during
idling stop, the vehicle roll prevention
function operates to prevent vehicle roll.
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SAFETY

PARKING BRAKE
137) 138) 139)
IMPORTANT Driving with the parking
brake on will cause excessive wear of
the brake parts.
Setting the parking brake
Depress the brake pedal and then firmly
pull the parking brake lever fully
upwards with sufficient force to hold the
vehicle in a stationary position.
Releasing the parking brake
Depress the brake pedal and pull the
parking brake lever 1 upwards fig. 87,
then press the release button 2. While
holding the button, lower the parking
brake lever all the way down to the
released position.
Brake Assist
During emergency braking situations
when it is necessary to depress the
brake pedal with greater force, the
brake assist system provides braking
assistance, thus enhancing braking
performance.
When the brake pedal is depressed
hard or depressed more quickly, the
brakes apply more firmly.
NOTE When the brake pedal is
depressed hard or depressed more
quickly, the pedal will feel softer but the
brakes will apply more firmly. This is a
normal effect of the brake assist
operation and does not indicate a
malfunction.
NOTE When the brake pedal is
depressed hard or depressed more
quickly, a motor/pump operation noise
may be heard. This is a normal effect of
the brake assist and does not indicate a
malfunction.
NOTE The brake assist equipment does
not supersede the functionality of the
vehicle's main braking system.WARNING
137)In the case of parking manoeuvres on
roads on a gradient, the front wheels must
be steered towards the pavement (when
parking downhill), or in the opposite
direction if the vehicle is parked uphill. If the
vehicle is parked on a steep slope, it is
advisable to block the wheels with a wedge
or stone.
138)Never leave children unattended in
the vehicle. Keep away the key when
leaving the vehicle and take it with you.
139)Do not drive with worn disc pads.
Driving with worn disc pads is dangerous.
The brakes could fail and cause a serious
accident. As soon as you hear a
screeching noise contact an Abarth
Dealership.
8705050102-12A-001AB
117

WARNING
155)Do not rely completely on the parking
sensor system and be sure to confirm the
safety around your vehicle visually when
driving. This system can assist the driver in
operating the vehicle in the forward and
backward directions while parking. The
detection ranges of the sensors are limited,
therefore, driving the vehicle while relying
only on the system may cause an accident.
Always confirm the safety around your
vehicle visually when driving.
156)Parking and other potentially
dangerous manoeuvres are, however,
always the driver’s responsibility. When
performing these operations, always make
sure that there are no other people
(especially children) or animals on the route
you want to drive into. The parking sensors
are an aid for the driver, but the driver must
never allow their attention to lapse during
potentially dangerous manoeuvres, even
those executed at low speeds.
IMPORTANT
26)Only have interventions on the bumper
in the area of the sensors carried out by a
Dealership. Interventions on the bumper
that are not carried out properly may
compromise the operation of the parking
sensors.
27)Only have the bumpers repainted or
any retouches to the paintwork in the area
of the sensors carried out by a Dealership.
Incorrect paint application could affect the
operation of the parking sensors.
28)The sensors must be clean of mud,
dirt, snow or ice in order for the system to
operate correctly. Be careful not to scratch
or damage the sensors while cleaning
them. Avoid using dry, rough or hard
cloths. The sensors should be washed
using clean water with the addition of car
shampoo if necessary. When using special
washing equipment such as high pressure
jets or steam cleaning, clean the sensors
very quickly keeping the jet more than
10 cm away.
130
STARTING AND OPERATING

EMERGENCY
TOWING
TOWING DESCRIPTION
Proper lifting and towing are necessary
to prevent damage to the vehicle.
Government and local laws must be
followed.
A towed vehicle usually should have its
drive wheels (rear wheels) off the
ground. If excessive damage or other
conditions prevent this, use wheel
dollies.
When towing with the rear wheels on
the ground, release the parking brake.
IMPORTANT Do not tow the vehicle
pointed backward with driving wheels
on the ground. This may cause internal
damage to the transmission.
IMPORTANT Do not tow with sling-type
equipment. This could damage your
vehicle. Use wheel-lift or flatbed
equipment.
If towing service is not available in an
emergency, the vehicle may be towed
with all four wheels on the ground using
the towing hook at the front of the
vehicle. Only tow the vehicle on paved
surfaces for short distances at low
speeds.Follow these instructions when towing
the vehicle with all wheels on the
ground:
shift to neutral (manual transmission),
or the N position (automatic
transmission);
switch the ignition to ACC;
release the parking brake.
NOTE Remember that power assist for
the brakes and steering will not be
available when the engine is not
running.
163