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Safety -> Active Safety Systems for Your Fiat 500 C 2 Door Second Generation (2021-2025)

The system also improves control and  
stability of the car when braking on a  
surface where the grip of the left and  
right wheels varies, or on corners.  
MSR (Motor  
ACTIVE SAFETY  
SYSTEMS  
The vehicle has the following active  
safety systems:  
Schleppmoment  
Regelung) SYSTEM  
The MSR system is an integral part of  
the ABS, that intervenes, if there is a  
sudden change to a lower gear,  
restoring torque to the engine, thereby  
preventing excessive drive at the drive  
wheels which, especially in poor grip  
conditions, could lead to a loss in  
stability of the vehicle.  
System intervention  
ABS (Anti-lock Braking System);  
EBD (Electronic Brake force  
Distribution);  
A slight pulsing of the brake pedal and  
noise indicates the intervention of the  
ABS: this is completely normal when  
the system intervenes.  
MSR (Motor Schleppmoment  
Regelung);  
ESC (Electronic Stability Control);  
HH (Hill Holder);  
49) 50) 51) 52) 53) 54) 55) 56) 57)  
ESC (Electronic Stability  
Control) SYSTEM  
EBD (Electronic  
Brakeforce Distribution)  
SYSTEM  
ASR (Antislip Regulation);  
This is an electronic system that  
controls vehicle stability in the event of  
tyre grip loss, helping maintain  
directional control.  
The system is capable of recognising  
potentially dangerous situations in  
terms of the stability and intervenes  
automatically on the brakes in a  
differentiated manner for the four  
wheels in order to provide a stabilising  
torque.  
HBA (Hydraulic Brake Assist);  
For the operation of the systems, see  
the following description.  
This system (which cannot be  
deactivated) recognises emergency  
braking conditions according to the  
speed of operation of the brake pedal  
and provides an additional hydraulic  
braking pressure to support that  
provided by the driver. This allows  
faster and more powerful operation of  
the braking system.  
ABS (Anti-lock Braking  
System)  
This system, which is an integral part of  
the braking system, prevents one or  
more wheels from locking and slipping  
in any road surface condition,  
irrespective of the intensity of the  
braking action, ensuring that the car  
can be controlled even during  
The ESC system switches on  
automatically when the engine is  
started and cannot be switched off.  
emergency braking thus optimising  
stopping distances.  
System intervention  
The system intervenes during braking  
when the wheels are about to lock,  
typically in emergency braking or  
low-grip conditions, when locking may  
be more frequent.  
This is indicated by the flashing of the  
warning light  
on the instrument  
panel, to inform the driver that the car is  
in critical stability and grip conditions.  
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58) 59) 60) 61) 62) 63)  
Moving the car on sloping roads  
ASR (AntiSlip  
Regulation) SYSTEM  
For optimal starting on very steep  
gradients, as follows:  
HH (Hill Holder) SYSTEM  
This is an integral part of the ESC  
system and automatically operates in  
the event of one or both drive wheels  
slipping, loss of grip on wet roads  
(aquaplaning) and acceleration  
on slippery, snowy or icy roads, etc.  
Depending on the slipping conditions,  
two different control systems are  
activated:  
This is an integral part of the ESC  
system and facilitates starting on  
slopes, activating automatically in the  
following cases:  
Press the brake pedal to activate the  
Hill Holder;  
completely press the clutch pedal;  
engage the gear;  
uphill: car stationary on a road with  
a gradient higher than 5%, engine  
running, brake pressed and gearbox in  
neutral or gear (other than reverse)  
engaged;  
remove your foot from the brake  
pedal;  
completely press the accelerator  
pedal.  
if the slipping involves both drive  
wheels, the ASR system intervenes,  
reducing the power transmitted by the  
engine;  
In this manner, the engine goes to the  
optimal rpm for taking off uphill. The Hill  
Holder remains engaged (car braked)  
until the clutch is gradually released  
(holding the accelerator pedal pressed):  
at this point, the system switches off  
and the car starts moving. The Hill  
Holder function switches off  
downhill: car stationary on a road  
with a gradient higher than 5%, engine  
running, brake pressed and reverse  
gear engaged.  
When setting off, the ESC system  
control unit maintains the braking  
pressure on the wheels until the engine  
torque necessary for starting is  
reached, or in any case for a maximum  
of 2 seconds, allowing your right foot  
to be moved easily from the brake  
pedal to the accelerator.  
When the 2 seconds have elapsed,  
without starting, the system is  
automatically deactivated, gradually  
releasing the braking pressure.  
During this release stage, the typical  
mechanical brake release noise can be  
heard, indicating that the car is about  
to move.  
if the slipping only involves one of  
the drive wheels, it also intervenes  
automatically, braking the wheel that is  
slipping.  
System intervention  
automatically if the cars does not  
take-off within 2 seconds.  
This is indicated by the flashing of the  
warning light on the instrument panel,  
to inform the driver that the car is in  
critical stability and grip conditions.  
The manoeuvre makes it possible to  
avoid pressing the accelerator (because  
it must remain fully pressed during the  
manoeuvre) and to operate only the  
clutch, by gradually releasing it.  
Operating the handbrake is not  
necessary.  
On less steep gradients, the system is  
active also with the accelerator pedal  
not completely pressed.  
64) 65)  
69  
Manual engagement/release  
HBA (Hydraulic Brake  
Assist) SYSTEM  
WARNING  
The ASR comes on automatically  
whenever the engine is started. While  
driving, the ASR can be turned off  
and then on again by pressing  
the button A fig. 50 (ASR OFF). When  
the system is not active, the LED on the  
same button turns on and, on some  
versions, a message appears on the  
display.  
It is an integral part of the ESC system.  
The HBA system is designed to  
improve the cars braking capacity  
during emergency braking.  
The system detects an emergency  
braking by monitoring the speed and  
strength with which the brake pedal  
is pressed, thereby applying the optimal  
brake pressure. This can reduce the  
braking distance: the HBA system  
therefore completes the ABS.  
49) When the ABS intervenes and you feel  
the brake pedal pulsating, do not reduce  
the pressure, but hold it down firmly and  
confidently; in doing so you will brake  
in the shortest distance possible,  
depending on the current road conditions.  
50) To obtain the maximum efficiency of  
the braking system, a bedding-in period of  
about 500 km is needed: during this period  
it is better to avoid sharp, repeated and  
prolonged braking.  
If the ASR is disengaged during driving,  
this is automatically reactivated at the  
following car starting.  
Maximum assistance of the HBA  
system is obtained pressing the brake  
pedal very quickly; in addition, the  
brake pedal should be pressed  
continuously during braking, avoiding  
intermittent presses, to obtain benefits  
from the system.  
Do not reduce pressure on the brake  
pedal until braking is no longer  
necessary.  
51) If the ABS system intervenes, this  
indicates that the traction of the tyres on  
the road is about to reach its limit. You  
must slow down to a speed compatible  
with the available traction.  
When travelling on snowy roads with  
snow chains, it may be helpful to turn  
the ASR off: in fact, in these conditions,  
the driving wheels skidding when  
moving off gives you better traction.  
52) The ABS cannot overrule the natural  
laws of physics, and cannot increase  
the grip available according to the  
condition of the road.  
53) The ABS cannot prevent accidents,  
including those due to excessive speed on  
corners, driving on low-grip surfaces or  
aquaplaning.  
The HBA system is deactivated when  
the brake pedal is released.  
54) The capability of the ABS must never  
be tested irresponsibly and dangerously, in  
such a way as to compromise personal  
safety and the safety of others.  
72) 73) 74) 75) 76)  
F0S0518  
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55) For the correct operation of the ABS,  
the tyres must of necessity be the same  
make and type on all wheels, in perfect  
condition and, above all, of the prescribed  
type and dimensions.  
66) 67) 68) 69) 70) 71)  
70  
56) If the space-saver wheel (where  
provided) is used, the ABS system keeps  
operating. Always remember that the  
space-saver wheel, being smaller than the  
original wheel, provides less grip.  
64) The HH system is not a parking brake,  
therefore do not leave the vehicle without  
activating the handbrake, switching off  
the engine, and engaging first gear, with  
the vehicle parked in safe conditions.  
71) Do not take unnecessary risks, even if  
your vehicle is fitted with an ASR system.  
Your driving style must always be suited to  
the road conditions, visibility and traffic.  
The driver is always responsible for road  
safety.  
57) The ABS gets the most from the  
available grip, but it cannot improve it; you  
should therefore take every care when  
driving on slippery surfaces and not take  
unnecessary risks.  
65) There may be situations on small  
gradients (less than 8%), with car laden or  
a trailer attached to it (where provided),  
in which the HH system may not activate,  
causing a slight reversing motion and  
increasing the risk of collision with another  
vehicle or object. The driver is, in any  
case, responsible for safe driving.  
72) The HBA system cannot increase tyre  
grip on the road over the limits imposed by  
laws of physics: always drive carefully  
according to the conditions of the road  
surface.  
58) For the correct operation of the ESC  
system, the tyres must necessarily be  
of the same make and type on all wheels,  
in perfect condition and, above all, of  
the prescribed type and size.  
73) The HBA system cannot prevent  
accidents, including those due to excessive  
speed on bends, travelling on low-grip  
surfaces or aquaplaning.  
66) For the correct operation of the ASR  
system, it is essential that the tyres are  
of the same make and type on all wheels,  
in perfect condition and, above all, of  
the specified type and dimensions.  
59) The ESC functions even when the  
space-saver wheel is being used. Always  
remember that the space-saver wheel,  
being smaller than the original wheel,  
provides less grip.  
74) The HBA system is an aid for the driver,  
who must always pay full attention while  
driving. The responsibility always rests with  
the driver.  
67) If the space-saver wheel (where  
provided) is used, the ASR system keeps  
operating. Always remember that the  
space-saver wheel, being smaller than the  
original wheel, provides less grip.  
75) The capability of the HBA system must  
never be tested irresponsibly and  
dangerously in such a way as to  
compromise the safety of the driver,  
occupants or other road users.  
60) ESC performance features must not  
induce the driver to take unnecessary  
or unfounded risks. Your driving style must  
always be suited to the road conditions,  
visibility and traffic. The driver is always  
responsible for road safety.  
68) The ASR cannot overrule the natural  
laws of physics, and cannot increase  
the grip available according to the  
condition of the road.  
76) When the HBA system intervenes,  
noises may be heard from the system. This  
is normal. In any case, while braking keep  
the brake pedal firmly depressed.  
61) The ESC system cannot alter the  
natural laws of physics, and cannot  
increase grip, which depends on the  
condition of the road.  
69) The ASR system cannot prevent  
accidents, including those due to excessive  
speed on corners, driving on low-grip  
surfaces or aquaplaning.  
62) The ESC system cannot prevent  
accidents, including those due to excessive  
speed on corners, driving on low-grip  
surfaces or aquaplaning.  
70) The capability of the ASR must never  
be tested irresponsibly and dangerously, in  
such a way as to compromise personal  
safety and the safety of others.  
63) The capability of the ESC system must  
never be tested irresponsibly and  
dangerously, in such a way as to  
compromise personal safety and the safety  
of others.  
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