Maserati Ghibli Owner's Manual page 315

• Close the filter access cover and
reinstall the access door.
CAUTION!
Failure to replace the filter may
considerably reduce the air
conditioning and heating system
efficiency.
Vacuum Pump Replacement
(2.0 L4 MHEV only)
The vacuum pump that is part of the
brake booster system has a definite
service life reported in the "Scheduled
Service Plan", after which it must be
replaced.
The work of the electrically powered
vacuum pump is particularly important
in the energy recovery phases during
brakes.
The intervention of the vacuum pump
can be felt from the outside but this is
not a malfunction.
The message on instrument cluster
display shown in figure warns the user
when it is time to replace the vacuum
pump. In this case, go to the Service
Network for a replacement.
In addition to the previously indicated
message, other messages may on the
TFT display when the ECU of the ESC
system detect a fault, or if the vacuum
pump does not work. In these cases
go to the Service Network and if
indicated in the message, stop the
engine and avoid using the car in this
condition.
Wiper Maintenance and Blades
Replacement
Windshield Wiper Arms Lifting
When the wiper arms are in rest
position it is not possible to check
Maintenance and Care
or replace the blades as they remain
under the hood. To service the blades
it is necessary to move the wiper arms
in "Service" position (see chapter
"Wipers and Washers Control" in
section "Dashboard Instrument and
Controls").
In this way it is possible to turn and lift
the arms for the desired intervention.
WARNING!
It is dangerous to operate or service
the wiper blades with the wipers in an
active position (different than "OFF")
and with the ignition device in the
RUN position. The rain sensors may
suddenly activate the wipers. Always
use the "Service" position for any
intervention on the wipers blades.
Windshield Wiper Maintenance
Life expectancy of wiper blades varies
depending on the geographical area's
weather conditions where the car
is used and frequency of use. Poor
performance of blades may be present
with chattering, marks, water lines or
wet spots. If any of these conditions
are present, clean the wiper blades or
replace if necessary.
Clean the rubber edges of the wiper
blades and the windshield periodically
with a sponge or soft cloth and a mild
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