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BMW 48-Volt Battery Connection May Overheat and Cause Fire

NHTSA campaign 20V761000 · Reported 2020-12-09 · BMW of North America, LLC

critical How serious is it? About this label

Very serious: this is a fire risk, and while BMW has not told owners to park the vehicle or keep it outside, you should have it inspected right away.

What's wrong, in plain English

These BMWs have a 48-volt battery that works with a starter-generator, a combined starter and charging unit. The connection between that battery and the starter-generator may not have been put together correctly at the factory. A poorly assembled connection resists the flow of electricity and can heat up, and that heat can lead to a fire. Your dealer will inspect the connection and replace it if it is not right, at no cost to you.

What you should do

1. Enter your VIN at nhtsa.gov/recalls to confirm your vehicle is covered by campaign 20V761000.
2. Contact your BMW dealer to schedule the inspection, or call BMW customer service at 1-800-525-7417.
3. Have the connection checked and replaced if needed. The repair is free.

Affected vehicles (5)

Who to contact

BMW — official BMW recall lookup

Customer service: 1-800-525-7417

Any franchised dealer for the brand can do the repair. Phone numbers are taken from manufacturer sites and recent NHTSA notices; if one has changed, the number in your own recall letter is the one to use.

The bigger picture

Official notice

Component
ELECTRICAL SYSTEM:12V/24V/48V BATTERY
Summary
BMW of North America, LLC (BMW) is recalling certain 2021 M340i xDrive, M440i xDrive Coupe, 530i, 530i xDrive, 540i, 540i xDrive, 740Li, 740Li xDrive, 840i Gran Coupe, 840i xDrive Gran Coupe, X5 sDrive40i, X5 xDrive40i, X6 sDrive40i, X6 xDrive40i, and X7 xDrive40i vehicles. The connection between the 48-Volt battery and the starter-generator may not have been assembled properly, which can cause increased electrical resistance at the connections.
Safety risk
Increased electrical resistance can increase the risk of a fire.
Remedy
BMW will notify owners, and dealers will inspect the connection between the 48-Volt battery and the starter-generator assembly, replacing it if necessary, free of charge. The recall is expected to begin April 12, 2021. Owners may contact BMW customer service at 1-800-525-7417.

Verify your specific vehicle by VIN at nhtsa.gov. Recall repairs are free of charge by law.