NHTSA ID Number: 11017393
Manufacturer Communication Number: MAS004722 CSN 25-05
TSB/Document Date: 2025-05-01
Summary
Certain Maserati Grecale BEV (M182) MY25 listed in MODISCS+ are involved in a Customer Service Notification (CSN) to update the BPCM (Battery Pack
Control Module) software. This CSN replaces the previous 760 campaign, which was suspended due to a software anomaly identified in the P8.2 release. Under very specific and infrequent conditions, the vehicle could inadvertently enter "turtle mode" immediately following a key-on event.
TECHNICAL SERVICE OPERATIONS
MAS004722 CSN 25-05
Customer Service Notification
FROM: Maserati TSO
TO: Maserati Network
Customer Service Notification 786
M182 BEV – BPCM Software Update
DATE: April 30, 2025
Certain Maserati Grecale BEV (M182) MY25 listed in MODISCS+ are involved in a Customer
Service Notification (CSN) to update the BPCM (Battery Pack Control Module) software.
This CSN replaces the previous 760 campaign, which was suspended due to a software
anomaly identified in the P8.2 release. Under very specific and infrequent conditions, the
vehicle could inadvertently enter "turtle mode" immediately following a key-on event.
The updated P8.3 software comprehensively resolves both the "turtle mode" concern and DTC
P0AA1.
Due to the DTC matrix not aligned in the previous software, the DTC P0AA1 – Contactor stuck
closed related to HV battery could be set and the error message “Service Charging System”
could appears on the cluster. As consequence the Customer may not be able to start the
vehicle.
We remind you that all the Customer Service Notification must be performed within the first
workshop visit, regardless of the Mandatory setting set in Modis, as required by Maserati policies
Also, for vehicles in Stock Dealer / PDI, it is necessary to carry out all action operations before
delivery to the end customer, as required by the White Book and explicitly reported in the Predelivery checklist.
Please read and review this bulletin first before ordering parts and/or starting the procedure.
Contact your Regional AfterSales Manager (RAM) or the Technical Support Helpdesk if you
have any questions.
Thank You for your continued support and cooperation.
Maserati North America
Aftersales Dept.
© 2025 Maserati North America
Aftersales
www.maseratiusa.com
MAS004722
All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA
Page 1 of 2
All images shown in this bulletin are for illustrative purposes only
1. Always check ModisCS+ to see if the vehicle is involved in this action and if it has not been
previously performed.
2. Before proceeding, please ensure that the Engine is OFF.
3. Connect a battery maintainer to the 12V battery (It is recommended to always use the
E-XTEQ MAXIMUS to maintain minimum voltage and current draw requirements)
4. Connect the EVO to the vehicle, ensure that battery voltage is around 12.5V 0r above then
select BPCM ► ECU Programming and follow the prompts.
Software version to be installed (or newer).
SW Target
F188 Target
P8.3
670358226
5. Clear ALL residual DTCs.
6. After the ECUs updates, please follow the following procedures:
▪
Close the MDEVO application and disconnect the MDVCI2
▪
Disconnect the 12V Battery Maintainer from the 12V Battery
▪
Perform the Key OFF
▪
Make sure that the bonnet, the trunk, and all the doors are properly closed.
▪
Wait for the power latch (wait until the dashboard clock turns off)
NOTE: allow the car to sleep for ten minutes
▪
Reconnect the 12V Battery Maintainer to the 12V Battery
▪
Perform the Key ON
▪
Reconnect the MDVCI2, restart the MDEVO application, and clear DTCs from the ECU View.
▪
Perform the Ignition Cycle (Key OFF and Key ON)
7. Procedure complete.
Note: This SW update allows to accurately calculate the battery health status. The exact result of this
calculation will not be available immediately after the update, but the software requires a period of
self-learning of the system that occurs autonomously during normal use of the vehicle. There are no
further actions to be performed by the workshop. If the customer has concerns regarding anomalous
SOH values, it is recommended to notify them that, after the campaign is carried out, a transition
period of even a few weeks or months of use is necessary.
Warranty Claim
Fill in the relative Warranty Claims as follows:
Description
Code
CSN Number
786
Warranty Code
23
Fault Code
063
Component Code
Operation Code
© 2025 Maserati North America
Aftersales
www.maseratiusa.com
MAS004722
8.21.001
8.21.001.A (0,20 h)
All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA
Page 2 of 2
TECHNICAL SERVICE OPERATIONS
Technical Procedure
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TSB/Document ID: MAS004722 CSN 25-05
Replacement Service Bulletin Number:
MFR Communication Date: 2025-04-30
MFR Internal Campaign ID/Software Version: Customer Service Notification 786
Communication Type: Service Campaign
NHTSA Components: FUEL/PROPULSION SYSTEM
MFR Component System:
MFR Component Subsystem:
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