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Service bulletin B611808

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10152311
Published by NHTSA2018-12-17
Manufacturer's numberB611808
Manufacturer's date2015-04-01
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

Battery Maintenance Requirements: Battery Care. Proper battery maintenance is vital when BMW vehicles are in your center's inventory. Allowing a vehicle's battery voltage to drop below 12.0 volts (12.0V) permanently reduces the battery life expectancy and can lead to premature failure of the battery. For vehicles, equipped with a high-voltage battery (hybrid/electric vehicles), failure to properly maintain this battery may lead to a greatly discharged HV battery, requiring replacement. We provide a flexible battery maintenance system every BMW center can use in accordance with their particular needs. This bulletin explains the Battery Charging Calendar (see attachment), charging systems and a simplified tool and battery voltage checking procedure below.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system

Vehicles listed
BMW K SERIES

Listing a model year does not mean every vehicle of it is concerned: the document says which.