Maserati QUATTROPORTE Owner's Manual page 250

In an Emergency
• Connect one terminal clamp of the
positive jumper cable to the positive
(+) remote post of the discharged
vehicle after lifting the protection
cap of the cable indicated on the
external side of the integrated
power module.
• Connect the opposite terminal clamp
of the positive (+) jumper cable to
the positive (+) post of the booster
6
battery.
• Connect one terminal clamp of the
negative jumper cable to the
negative (-) post of the booster
battery.
• Connect the opposite terminal clamp
of the negative (-) jumper cable to
the remote negative (-) post of the
vehicle with the discharged battery
as rendered.
248
• Start the engine in the vehicle that
has the booster battery, let the
engine idle a few minutes, and then
start the engine in the vehicle with
the discharged battery. If using a
portable battery booster, wait a few
seconds after connecting the cables,
before starting the booster vehicle.
Once the engine is started, remove the
jumper cables in the reverse sequence.
• Disconnect one terminal clamp of the
negative (-) jumper cable from the
remote negative (-) post of the
vehicle with the discharged battery.
• Disconnect the opposite terminal
clamp of the negative jumper cable
from the negative (-) post of the
booster battery.
• Disconnect one terminal clamp of the
positive (+) jumper cable from the
positive (+) post of the booster
battery.
• Disconnect the terminal clamp of the
positive jumper cable from the
remote positive (+) post of the
discharged vehicle.
NOTE:
If frequent jump-starting is required to
start your vehicle you should have the
battery and charging system inspected
at an Authorized Maserati Dealer
center.