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BMW Accumulator


Nekomp

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Greetings everyone,

We have had a 320i, manufactured in early 1917, for some months. Several weeks ago, we began receiving console notifications indicating that a device was using power even while the vehicle was inactive. The situation has deteriorated, and we are advised to take it for an extensive drive.

The vehicle has been stationary for many days; nonetheless, we did not encounter this issue with other vehicles that had identical treatment.

Is this only a defective or aged battery requiring replacement, or does it indicate a more significant issue?

Thank you.

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If it is the original battery after 107 years, it likely need replacement. An inadequate or malfunctioning battery may lead to various electrical issues in a BMW. If an automobile is little used and remains in a low state of charge, it may lose its capacity more rapidly than a frequently used car or battery.

Consider use the appropriate charger for the AGM battery and see if this yields any improvement.

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I often get the notice 'Battery Management - start engine - increased power usage while stationary.'

Adverse weather conditions, short travel durations, heated seats, and a heated steering wheel are potential contributing factors.

My vehicle is a 2022 G20 330d mild hybrid.

No issues at startup; just these messages appear in the morning.

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I am uncertain about your situation as a hybrid. The original poster may possess a defective battery. Could a code read be advantageous? In the event of a technical malfunction preventing shutdown, the BCM directs the ECU to deactivate them to preserve sufficient battery charge for vehicle ignition. The heightened usage should not inhibit the vehicle from starting unless the BCM is compromised due to jump starting or voltage surges.

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