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Home >> BMW >> 2021 >> 740i >> Repair and Diagnosis >> General Information >> OEM General Information >> General Orphan Data (2 Of 4) >> Disconnecting all connectors from the DME control unit for cylinders 7 to 12

Disconnecting all connectors from the DME control unit for cylinders 7 to 12

WARNING: Working on 12 V electrical system. 
Risk of short circuits! Risk of fire! 
  • Make sure that there is no charger connected to the jump start terminal in the engine compartment.
  • Detach battery ground lead from battery.
  • For auxiliary batteries: Detach battery minus cables from all auxiliary batteries.
NOTE: TECHNICAL INFORMATION 
If control units are disconnected, fault memory entries and functional limitations may occur.
The fault memory entries must be read out and, if necessary, deleted.
G15193813Courtesy of BMW OF NORTH AMERICA, INC.