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Service bulletin B512720

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 id10184577
Published by NHTSA2020-12-21
Manufacturer's numberB512720
Manufacturer's date2020-11-01
NHTSA componentFUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP; STRUCTURE:BODY

NHTSA's summary

FUEL FILLER DOOR WILL NOT OPEN: The fuel filler door (aka flap) will not open. In rare cases, if the vehicle is locked using the remote control key and the fuel filler door is pushed closed simultaneously, the fuel door can enter a locked state that cannot be unlocked.

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

Body and frame, Fuel system, Fuel tank

Vehicles listed
BMW 330E2021
BMW 330I2019, 2020, 2021
BMW 430I2021
BMW 530E2018, 2019, 2020, 2021
BMW 530I2017, 2018, 2019, 2020, 2021
BMW 540D2018, 2019
BMW 540D2020
BMW 540I2017, 2018, 2019, 2020, 2021
BMW 640I2018, 2019
BMW 640I2020
BMW 740E2017, 2018, 2019
BMW 740I2017, 2018, 2019, 2020, 2021
BMW 740LI2016 to 2017
BMW 745E2020
BMW 750I2018, 2019
BMW 750LI2016 to 2019
BMW 750LI2021
BMW 840I2020, 2021
BMW B7 ALPINA2018 to 2021
BMW M340I2020, 2021
BMW M440I2021
BMW M550I2017
BMW M550I2018, 2019, 2020, 2021
BMW M760I2017, 2018, 2019, 2020, 2021
BMW M82020, 2021
BMW M8 GRAN COUPE2020
BMW M850I2019
BMW M850I2020, 2021
BMW M850XI2019
BMW X52019, 2020, 2021
BMW X62020, 2021
BMW X72019, 2020, 2021

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

Other bulletins for the same vehicles and component
B1202212021-07-06. Service bulletin. SERVICE ACTION: INSPECTION OF THE ELECTRONIC WASTEGATE ACTUATOR CONNECTOR . Due to a software error, long charging times (10-12 hours) for the Plug-in Hybrid Electric Vehicle (PHEV) high-voltage battery may damage the internal printed circuit board and the electrical connection to the electronic wastegate actuator. A software error in the Digital Motor Electronics (DME).