Bump Starting - Fiat 500 Hybrid 2020 Owner's Handbook Manual

To start, proceed as follows in the
numerical order shown in fig. 132:
connect the positive terminals (+
mark near the terminal) of the two
batteries using a suitable lead;
with a second cable, connect
the negative terminal (–) of the
supplementary battery to an earth point
on the engine or gearbox of the car to
be started as in fig. 132;
start the engine;
when the engine has been started,
remove the leads reversing the order
above.
When jump starting, NEVER
connect the negative cable (–) of the
supplementary battery to the negative
pole (–) of the car battery, but only to
an earth point on the engine/gearbox
assembly.
If after a few attempts the engine does
not start, do not persist but contact a
Fiat Dealership.
WARNING Do not directly connect
the negative terminals of the two
batteries: sparks could ignite explosive
gas released from the battery. If the
supplementary battery is installed on
another car, prevent accidental contact
between metal parts of the two cars.

BUMP STARTING

Never bump start the engine by
pushing, towing or driving downhill.
This could cause fuel to flow into the
catalytic converter and damage it
beyond repair.
WARNING Remember that the brake
servo and electrical power steering
system (for versions/markets, where
provided) are not active until the engine
is started. A much greater effort will
therefore be required to use the brake
pedal or turn the steering wheel.
WARNING
159) This starting procedure must be
performed by expert personnel because
incorrect actions could cause electrical
discharge of considerable intensity.
Furthermore, conventional battery fluid is
poisonous and corrosive: avoid contact
with skin and eyes. Keep naked flames
and lighted cigarettes away from the
battery and do not cause sparks.
160) Remove any metal objects (e.g. rings,
watches, bracelets), that might cause an
accidental electrical contact and cause
serious injury.
161) Do not attempt to recharge a
frozen conventional battery: first it must
be thawed, otherwise there is a risk of
explosion. If freezing has occurred, the
battery should be checked by skilled
personnel to make sure that the internal
elements are not damaged and that the
body is not cracked, with the risk of leaking
poisonous and corrosive acid.
IMPORTANT
43) Do not start the car by connecting
the supplementary battery to the auxiliary
lithium battery for the hybrid system under
the front left seat, but connect it to the
battery in the engine compartment only.
44) Never use a fast battery charger to
start the engine as this could damage the
electronic systems, particularly the engine
ignition and fuel supply control units.
45) Do not connect the cable to
the negative terminal (–) of the flat
conventional battery. The following spark
could lead to battery explosion and cause
serious harm. Only use the specific earth
point; do not use any other exposed
metallic part.
46) Never bump start the engine by
pushing, towing or coasting downhill. This
could cause fuel to flow into the catalytic
converter and damage it beyond repair.
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