Removal & Installation (3-Series - E36)
WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 1999 BMW Z3, 1999 BMW M3, 1999 BMW M Roadster, 1999 BMW M Coupe, and 1999 BMW 740iL. However, it is still accessible from the selected car via links, so may be relevant.
PCM is located behind cover on firewall in right rear of engine compartment. On 4-cylinder vehicles, remove battery. On all vehicles, remove 4 PCM cover screws. See Fig 1. Unlock electrical connector retainer. Disconnect electrical connector. Slide out PCM. See Fig 2. To install, reverse removal procedure.