1. Remove the bolts and cover the control electronics compartment.
2. Disconnect the connector and remove the control unit.
Removing ECM of engines M51, M52, M60, M62
Removing the ECM of the M57 engine
1/2 — ECM1/ECM2
3 — Transmission control unit
4 — Engine power regulation system control unit
3. Installation is done in reverse order. The new ECM must be programmed after installation.