completely. Do not leave the soft top partially open or closed unless necessary for repairs or
maintenance. After approximately 7 minutes, the electro-hydraulic system deactivates. Please also
note that in the event of a failure of the automatic movement system, the soft top can be operated
manually. For details about the emergency handling procedure, please refer to the vehicle's owner’s
manual.

High-voltage battery charging port door unlock.
To open the charging door, located on the left part of the rear bumper under the tail lamp, push the
soft key on the bottom bar of the Comfort Display.

If you are unable to unlock the charging door with the soft key on the Comfort Display, it can be
unlocked manually. Use the door emergency release located on the bottom left of the rear bumper.

NOTE: Pull the release cable moderately to avoid its possible break. It’s not possible to feel or hear the
unlocking of the charging door actuator. If the charging cable does not unlock at the end of the
charging procedure, it must be unlocked manually by operating a special emergency unlocking
device located on the left side of the trunk compartment.

For more information about the correct procedures to carry out, consult the Owner’s manual.

© 2025 Maserati Americas.
Aftersales
www.maseratiusa.com

MAS004782

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whole or in part is not permitted without
authorization from the publisher. Printed in USA

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TECHNICAL SERVICE OPERATIONS

GranCabrio Folgore - soft top operation

12V Battery Management

The state of charge of the 12V battery is periodically monitored by the VDCM. If the battery voltage
falls below a certain threshold, the VDCM will recharge it, ensuring the battery remains charged.
Therefore, it is not necessary to de-energize the battery during vehicle downtime. However, the
negative terminal will need to be disconnected for certain repair services. Note that disconnecting the
12V battery does not disconnect all electrical systems. Please refer to the Service Manual for further
details.

12V battery access
The 12V battery is located in the front hood compartment. To access it, remove the cover by loosening
the four screws.

2.4

Emergency start - dead Battery

The 12V battery is periodically recharged by the HV (High Voltage) battery system; however, if the HV
battery SOC falls below a certain threshold, it will not maintain charging of the Low Voltage (LV)
battery. Consequently, discharge the 12V battery after a short period. Therefore, the vehicle cannot
be started or recharged if the HV and LV batteries are low or dead. It will be necessary to recharge the
12V battery first with an external source or replacement, after which the HV battery can be
recharged/recovered using an external source via the HV charging port. Please note that this can only
be done if there are no faults related to the HV system and that the HV battery is not completely dead
or below a certain threshold. Please review the training material or the workshop manual in case of a
dead HV battery.
To power the 12V battery using a suitable external source, use the connecting points as shown below:
the positive directly on the battery post and the negative using the ground pin located on the side:

© 2025 Maserati Americas.
Aftersales
www.maseratiusa.com

MAS004782

All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA

Page 6 of 9

TECHNICAL SERVICE OPERATIONS

2.3

Transmission Park Release (Front e-axle unlock)

To move the vehicle with the power off, it is necessary to unlock the electric axle. To this end, it is
possible to activate the “Car Wash” mode as indicated below:
-

Vehicle must be on a level surface.

-

Start the electric motors.

-

Put the transmission in N (Neutral) by using the control on the dashboard.

-

Turn the motors off by pressing the START/STOP button.

TECHNICAL SERVICE OPERATIONS

2.5

The driver’s door must be closed during these steps. This condition lasts for about 15 minutes, after
which the transmission moves automatically to P (Park).
If it is not possible to start the electric motors, proceed as follows:
-

Perform Key ON (12V power supply required)

-

Deactivate the electric parking brake.

-

With the brake pedal pressed, keep the Neutral (N) button pressed until the vehicle
deactivates the Park state (the message appears on the display)

Attention: In this state, it is not possible to turn the Key OFF; put the vehicle back into Park (P) to be able
to turn it off.
ATTENTION: The vehicle cannot be towed on its wheels but can only be pushed by hand or with a
vehicle pusher (Maximum speed =5 km/h (3 mph)).

3 Pre-Delivery inspection checklist
To support you in delivering the new Maserati GranTurismo & GranCabrio Folgore, we have developed a
specific Checklist, adding new checks to test the new features and ensure that the customer can drive the
vehicle with maximum satisfaction. The Check Lists are attached to this communication; they are
applicable for both models, therefore replacing those previously published. The checklist will guide you
through the various stages of vehicle inspection and preparation. Each Checklist includes a set of actions
and procedures to be carried out on each vehicle during the PDI. At the end of each vehicle preparation,
we ask you to keep a copy of the checklist, signed by the operator who has performed the checks, to
support process traceability that could be helpful to improve the quality of the service offered, where
necessary. Maserati could also request a copy of the same during the PDI or the contractual warranty
period for product improvement or warranty claims assessment purposes.

PDI procedure to carry out with MDEVO
The warranty start date and “Customer Mode” setting to be performed during PDI are described in
Circular Letter MAS003368 (and corresponding updates).
© 2025 Maserati Americas.
Aftersales
www.maseratiusa.com

MAS004782

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whole or in part is not permitted without
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Page 7 of 9

A cross-functional Technical Team has been established, comprising individuals from Product Support,
Engineering, Quality, Spare Parts, Customer Care, and RAM departments. In addition to introducing
innovative technical content, the team is dedicated to offering comprehensive support for accurate
diagnosis and resolution during initial interventions within the network. Furthermore, they aim to
conduct swift and effective investigations into all reported anomalies. For details on submitting BOLs
to report anomalies, please consult the latest "Blue On-Line Policy Update" Bulletin.
To monitor the correct progress of the vehicle repair on new models and ensure corrective action for
anomalies found during PDI. Maximum care is required in manually setting the Service Entry status.
Please also remember that the Service Entry status is automatically set up in "Awaiting Spare Parts"
when the parts to be replaced are related to interventions covered by the contractual warranty and
ordered in VOR mode. With a view to product improvement and to allow Maserati to improve the
diagnostic effectiveness, you will also need to analyze promptly the defective components replaced.
For this purpose, applying the following indications for the entire duration of the Technical Team is
required:
1. A warranty claim must be entered within two working days of closing the Service Entry.
2. Components replaced and requested for urgent return must be sent within two working days of
receiving the request. Please refer to the Maserati warrant urgent parts return bulletin in Modis for
details.

5 Technical Documents and Special Tools
5.1

Technical Information

TechDocs has been updated to include technical documentation for the new GranTurismo and
GranCabrio:
•
•
•
•
•

Parts catalog
Labor Times
Workshop Manual
Wiring Diagrams
Diagnostic Help

© 2025 Maserati Americas.
Aftersales
www.maseratiusa.com

MAS004782

All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA

Page 8 of 9

TECHNICAL SERVICE OPERATIONS

4 Activation of the technical team

Special Tools

Maserati has created a set of special tools specifically for the new GranTurismo and GranCabrio
Folgore to ensure the highest levels of quality in driving assistance and safety. Such mandatory tools
will be supplied automatically and will also be present on the ModisCS+ Special Tool Catalog. The
tools created are listed below in the table:

Part Numbers

Description

900001694

HVB handling spider

900001695

HVB Ground support tray

900001693

HVB lifter tray interface

900030836

Rear axle removal equipment

900030918

Front axle removal equipment

900031018

Front axle bench support bracket

900031017

Rear axle bench support bracket.

900031014

Front motor centering brackets

900031015

Front axle lifting equipment

900031016

Rear axle lifting equipment

900030922

Adapters for the coolant circuits drain

900031097

Insertion guide for front/rear axle seal

900100007

Breakout box for high-voltage system voltage and insulation
measurements

900031020

Battery pack and battery cooling circuit leak tester

900031127

Plug kits for the leak tester

900030810

Cable for HV battery off-board diagnosis

900100011

Driving tool for the front subframe

900030923

BEV centering columns

Furthermore, how to use each tool will be detailed in the relevant procedure in ModisCS+.

© 2025 Maserati Americas.
Aftersales
www.maseratiusa.com

MAS004782

All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA

Page 9 of 9

TECHNICAL SERVICE OPERATIONS

5.2