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Home >> BMW >> 2017 >> 530i >> Repair and Diagnosis >> Electrical >> Charging Systems >> Engine Electrical System - Repair (G30) (5 Of 5) >> 12 90 E-Box >> 12 90 150 Remove and install/replace control unit box (540i xDrive 2017-2020) >> Remove control unit bracket

Remove control unit bracket

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: RISK OF DAMAGE 
Damage to battery terminal, the safety battery terminal or the intelligent battery sensor (IBS).
Damaged battery terminals can lead to malfunctions or vehicle electrical system faults.
Detach battery terminal from battery pole by carefully shifting to and fro. Do not pry off using a tool.

Preliminary work