EEPROM Programming Procedure

1999 BMW 328i 2D Convertible, AutomaticSECTION EEPROM Programming Procedure

Connect scan tool and retrieve information from PCM. Turn ignition off. Ensure battery is fully charged. Download latest program and calibration from ITCS. Turn ignition on. Reconnect scan tool and program PCM. Start engine and run engine for at least one minute. Check for DTCs. If PCM does not program, check all PCM connections and retry. If PCM still cannot be reprogrammed, replace PCM.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.