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Home >> BMW >> 2021 >> M440i xDrive >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel Supply System -- Repair (G22, G23 & G26) >> 16 12 Fuel Lines/Hoses >> 16 12 053 Replacing purge air line, front (M440i and M440i xDrive Gran Coupe sedan) >> Unlock and disconnect the fuel line with snap fastener

Unlock and disconnect the fuel line with snap fastener

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. Do not pry off using a tool.

Preliminary work 

NOTE: TECHNICAL INFORMATION 
No tool  must be used to unlock/lock or disconnect/connect the fuel line with a dual locking clutch.
G13795465Courtesy of BMW OF NORTH AMERICA, INC.