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Home >> BMW >> 2017 >> 530i >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> General Electrical System - Repair (G30) (1 Of 3) >> 61 21 Battery With Holder >> 61 21 003 Removing and installing the 12-V dual storage battery (530i 2017-2022, 530i xDrive 2017-2022, 540i 2017-2022, 540i xDrive 2017-2022, M550i xDrive 2018-2022) >> Removing 12 V dual storage system

Removing 12 V dual storage system

WARNING: Working on 12 V vehicle electrical system. 
Risk of short circuits! Risk of fire! 
  • Make sure that no charger is connected to the jump start support point in the engine compartment.
  • Detach battery earth lead from battery.
  • With auxiliary batteries:   Detach all battery earth leads from additional batteries.

Preliminary works 

WARNING: Working on 12 V vehicle electrical system. 
Risk of short circuits! Risk of fire! 
  • Make sure that no charger is connected to the jump start support point in the engine compartment.
  • Detach battery earth lead from battery.
  • With auxiliary batteries:   Detach all battery earth leads from additional batteries.
NOTE: TECHNICAL INFORMATION 
Follow notes for 12 V dual storage system.
See additional information 61 20... NOTES  on the 12 V dual storage system.