NHTSA ID Number: 10187478
Manufacturer Communication Number: B610121
TSB/Document Date: 2021-02-22
Summary
BATTERY DOES NOT CHARGE WITH EXTERNAL CHARGER AND CLOSED HOOD: After the vehicle has been charged using a 12 V charger with the hood closed during a long stationary period, the 48 V battery may be totally discharged, and possible replacement is needed.
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TSB/Document ID: B610121
Replacement Service Bulletin Number:
MFR Communication Date: 2021-01-01
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: STRUCTURE:BODY:HOOD
MFR Component System:
MFR Component Subsystem:
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2/2/2021
61 01 21_48 V BATTERY DOES NOT CHARGE WITH EXTERNAL CHARGER AND CLOSED HOOD
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- SIB 61 01 21
2021-01-21
48 V BATTERY DOES NOT CHARGE WITH EXTERNAL CHARGER AND
CLOSED HOOD
MODEL
E-Series
G05
G07
G20
G22
G30
Model Description
X5 Sport Activity Vehicle
X7 Sport Activity Vehicle
3 Series Sedan
4 Series Sedan
5 Series Sedan
Production Date
From August 1st, 2020
Affected Option Code
01CE Recuperation
system
SITUATION
After the vehicle has been charged using a 12 V charger with the hood closed during a long stationary
period, the 48 V battery may be totally discharged, and possible replacement is needed. For example, after
a long stationary period in the showroom or storage.
Fault memory:
803419 - Batt48: Total discharge, may be entered in the BATT48V battery control unit.
Note: Trickle chargers (< 20-amp output) or solar chargers will not be able to charge the 48 V battery.
CAUSE
The 48 V battery does NOT charge when using a 12 V battery charger with the hood closed.
When charging the vehicle using a 12 V battery charger, the 48 V battery is ONLY able to charge with
the hood open.
CORRECTION
In order to prevent total discharge and thus preliminary damage to the 48 V battery, there are two options:
Prerequisite: Vehicle is connected to 12 V permanent charger (for example in the showroom, whereby the
12 V charging cable is routed into the engine compartment via the vehicle underside, in order to close the
hood.
Option 1:
In this case, an external battery charger must be activated every 48 to maximum 55 hours at the latest.
Then the open the hood for at least 2 hours.
Option 2:
Disconnect the mains/signal connector G14*1B of the BATT48 (see attachment).
Important:
The 12V battery must be fully charged before unplugging the 48V signal connector.
Copyright ©2021 BMW
of North America, Inc.
1/2
2/2/2021
61 01 21_48 V BATTERY DOES NOT CHARGE WITH EXTERNAL CHARGER AND CLOSED HOOD
Subsequently the hood can be closed.
Before the vehicle is driven again on the road, it is important to plug in the connector delete the fault
memory using ISTA.
This is an option if the vehicle is standing in the showroom for an extended period (maximum of 12 months)
and is not driven.
Note: The 48 V battery is not required for demonstration of various vehicle functions in the
showroom.
QUESTIONS REGARDING THIS BULLETIN
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Parts inquiries
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Supporting Materials
picture_as_pdf B61 01 21 Attachment.pdf
Copyright ©2021 BMW of North America, Inc.
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