Case Studies

BMW and Mini Cooper Battery Replacement – Registering New Battery

Did you know that the BMW engine computer, known as a DME (Digital Motor Electronics) must be programed to know a new battery has been installed?

Our Senior Service Technician Nick explains why. We’re obviously playing up the humor here, but the topic isn’t a joke, it’s a real issue.

Otherwise the battery can under or overcharge, and cause premature battery failure. Older batteries become sulfated with time and require a higher charging rate. So unless the DME is notified a new battery is installed, it will often overcharge, and damage the new battery in short order.


The #1 reason for battery failure after battery replacement, other than the use of the incorrect battery type, is the failure to properly program the car.

Knowledge, Integrity, Trust. Every time.
Because you and your car deserve it!

– Bruce

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