When is EPROM Replacement and/or Programming Necessary? BMW M3 E36

When is EPROM Replacement and/or Programming Necessary?

The program and or data of an engine or transmission control module only needs to be updated or replaced if

1. The control module is replaced with a non programmed/basic module.
2. A Service Action, Recall or customer concerns have resulted in the release of a new/updated program or revised operational data.

The programming procedure of the diagnostic equipment will identify if

1. a DME EPROM needs to be replaced or can be updated
2. a control module (DME or Transmission) can still be programmed or needs to be replaced if the reprogramming limit of 13 times has been reached