Knowing Your Car -> Hybrid Version Operating Principle for Your Fiat 600 SUV Second Generation (2023-2026)

the charge level of the auxiliary lithium  
ion battery (48V).  
reducing fuel consumption and CO2  
emissions.  
HYBRID VERSION  
OPERATING  
PRINCIPLE  
NOTE The vehicle always starts  
with the petrol engine to ensure the  
efficiency of the catalytic converter and  
the availability of the brake assist.  
The driving in all-electric is possible  
for parking manoeuvring, for 20 mph  
(30 km/h) speed zones in city, on  
urban and country roads with smooth  
driving and on motorways in slight  
deceleration or downhill. The electric  
motor is integrated into the automatic  
gearbox.  
NOTE The Hybrid system does not  
operate continuously, but is activated  
based on the state of the car, the state  
of charge of the auxiliary lithium ion  
battery (48V), the driving conditions  
(acceleration/deceleration/braking,  
engine starting) and on the conditions  
of the road surface (e.g. downhill  
road).The 48 V Li-ion (Lithium-  
(where provided)  
HYBRID SYSTEM  
EQUIPMENT  
11) 12) 13) 14) 15)  
The 600 Hybrid version is powered by  
an hybrid system that uses:  
an electric motor ("e-machine")  
integrated in the automatic  
ion) auxiliary battery stores the  
electrical energy needed to propel  
the vehicle.The traction battery is  
automatically charged to ensure that  
the charge level is always around  
50% of the maximum level, in order  
to fully exploit the hybrid functionality  
and, at the same time, always have  
some capacity available for the energy  
recovery operation.It is located under  
the front left seat.The traction battery's  
range varies depending on the type of  
driving, the route and the ageing of its  
components.  
transmission, mechanically connected  
to the heat engine and powered by an  
auxiliary lithium ion battery (48V)  
a BS (Belt Starter), activated by the  
auxiliary services belt, which makes it  
possible to start the heat engine with  
the car stationary or when driving at a  
low speed. In some phases, such as  
during "electric driving", it replaces the  
starter motor of the heat engine. In the  
latter case, when the car is stopped  
with automatic engine shutdown, the  
engine will be restarted by the BS (Belt  
Starter) device.  
With the PRND command in P ("Park")  
and N ("Neutral"), an increase in noise  
from the engine compartment may  
be heard as the auxiliary battery (48V)  
charging phase begins: this is normal  
and not a fault.  
Energy recovery  
Maximise the vehicle's inertia by  
releasing the accelerator pedal so that  
the vehicle slows down by itself (e.g.  
when driving downhill or approaching a  
traffic light).  
The Hybrid system provides a power  
boost to the internal combustion  
engine during vehicle start-up when  
more traction torque is required, or at  
times of higher fuel consumption and  
emissions. In certain driving conditions,  
the Hybrid system control module  
regulates the energy flows based on  
an auxiliary 48V lithium ion  
battery that has the function of storing  
energy for the car.  
When the accelerator pedal is released,  
provided that the slider on the power  
indicator in the instrument panel is still  
moving in the CHARGE zone, energy  
recovery is optimal.  
The Hybrid system makes it possible  
to improve performance (prompter  
response during transient stages), while  
Energy recovery makes it possible to  
make efficient use of the "passive"  
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phases of driving (deceleration). The  
recovered energy is used to recharge  
the traction battery and is then used  
for all-electric driving or further  
acceleration.  
tamper with damaged components of  
the battery system: be careful to avoid  
short circuits. Contact a Fiat Dealership  
immediately.  
13) Do not make any changes to the  
components of the battery system: always  
contact a Fiat Dealership.  
When the traction battery is almost  
full, the energy recovery is gradually  
reduced.  
14) Do not puncture, crush, shake or  
deform the battery system.  
15) The lithium ion auxiliary battery (48V) is  
located under the front left seat: therefore  
avoid getting the battery system wet with  
any type of liquid and do not park the  
vehicle over sources of external heat.  
DC/DC converter  
To permit the conversion of the current  
originating from the 48V system into  
current that can be used by the 12V  
system, DC/DC is used: when driving  
the car, the DC/DC acts as a converter,  
making it possible to power and charge  
the 12V battery. The connecting cable  
allows the 12V and 48V system to  
be interfaced and to power the 12V  
system through the 48V auxiliary  
battery, the DC/DC converter and the  
BS (Belt Starter) device.  
IMPORTANT  
11) Improper use, or inappropriate  
interventions on the system components,  
can cause serious electric damage and  
cause serious accidents that can even  
result in death if the provided instructions  
are not observed. Always contact a Fiat  
Dealership.  
12) In case of an accident, the system  
components could have suffered damage  
that cannot be seen. Do not touch or  
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FUNCTIONAL DIAGRAM OF THE CAR  
(where provided)  
2
F6S0204  
1. Petrol engine 2. Electric motor / 6-speed electric dual-clutch automatic gearbox 3. 48 V traction battery 4. 12 V accessory  
battery 5. DC/DC converter 6. Belt starter  
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an index of malfunction. In addition,  
although the distance that can be  
travelled in electrical mode decreases  
as the capacity of the lithium ion  
battery decreases, the performance of  
the car is not affected.  
AUXILIARY BATTERY  
(Hybrid version)  
to temperatures below -10°C and  
above +40°C for extended periods of  
time, as some vehicle functions may  
change or become deactivated as  
the battery performance decreases  
outside this temperature range. The  
battery is equipped with conditioning  
systems that ensure that it operates  
under optimal temperature conditions  
appropriate to its operation.  
16)  
4)  
3) 4)  
The car is equipped with a sealed 48V  
auxiliary lithium-ion battery with the  
function of energy storage for the car.  
The main functions performed by the  
auxiliary lithium-ion battery are to store  
the electric energy developed while  
braking and to supply it to the system  
when the electric motor starts to  
function.  
GENERAL SAFETY  
INFORMATION  
Improper use, or inappropriate work  
performed on the components of  
the system with incorrectly isolated  
equipment, could cause short circuits  
and cause accidents due to the  
passage of high currents and/or the  
high resulting temperatures. Have all  
repair/maintenance work carried out  
only at a Fiat Dealership.  
The components of the hybrid system  
in the vehicle (DC/DC, inverter, 48V  
auxiliary lithium ion battery, control  
module of the electrified dual clutch  
automatic transmission) are cooled  
by the engine coolant (for more  
information refer to the "Checking  
levels" paragraph in the "Servicing and  
maintenance" section).  
The auxiliary lithium ion battery is  
partially charged during driving by  
recovering the kinetic energy of the car  
when slowing down and braking.  
The auxiliary lithium ion battery  
recharges automatically to ensure  
that the charge level is always below  
100%, in order to take full advantage  
of the hybrid functionality and, at the  
same time, always have a certain  
capacity useful for the energy recovery  
operation.  
If the battery system is used in  
an inappropriate manner, if it is  
damaged/overheats/tampered with or  
exposed to adverse environmental  
conditions (e.g. very high or very  
low temperatures), the battery could  
be damaged and release flammable  
electrolyte emissions. In these cases,  
have the 48 Volt battery replaced, and  
have the work performed only at a Fiat  
Dealership.  
WARNING In case of a 48V lithium  
ion battery failure, contact a Fiat  
Dealership.  
The battery does not require any type  
of maintenance. Its state of charge  
can be seen on the instrument panel  
display (see what is described in  
chapter Digital instrument panel 7") in  
the section "Knowing the instrument  
panel").  
WARNING The battery has a limited  
service life. Its ability to conserve the  
charge decreases with time and use.  
The amount of decrease in battery  
capacity varies based on the external  
conditions (e.g. ambient temperature,  
etc...) and conditions of use, such as  
the driving style, for example. This is a  
natural characteristic of the lithium ion  
batteries and must not be considered  
Vehicle in storage for more than 1  
month  
To ensure that the lithium ion battery  
is maintained properly over time,  
the vehicle must not be exposed  
Always park the vehicle in a place  
with temperatures between -10°C  
and +30°C (parking in a place with  
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