According to the provided content, this technical bulletin serves as a guide for diagnosing and troubleshooting 12V battery issues in Maserati Grecale and GranTurismo models from MY23+.
“Dead Battery” Concerns:
This technical bulletin focuses on investigating and resolving “Dead Battery” concerns in Maserati vehicles. The diagnostic checklist provided will help identify potential root causes and facilitate the authorization to replace the 12V battery.
Important Procedure:
When diagnosing vehicles with suspected parasitic draw, it is crucial to follow a specific procedure to prevent activation of the “STOLEN” mode by the TBM. This mode may cause a parasitic draw of approximately 150 mA for 8 hours after the battery has been re-connected.
Diagnostic Checklist:
The diagnostic checklist includes a series of questions and tasks to help diagnose and identify potential issues related to the 12V battery. This consists of checking the battery production date, attaching pictures of the battery label and hot printed code, and examining the battery post terminals for corrosion or mechanical anomalies.
This technical bulletin emphasizes the importance of following the proper procedure when diagnosing and troubleshooting 12V battery issues in Maserati vehicles to ensure accurate and efficient diagnosis and resolution.
Manual:
Download: Maserati TSO Technical Information: Grecale & GranTurismo 12 Volt Battery Best Practices
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