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Home >> BMW >> 2022 >> X3 M Base >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Engine -- Repair -- X3 M (F97) (3 Of 3) >> 11 78 Co Adjustment, Oxygen Sensor >> 11 78 512 Replacing oxygen sensor (Cylinders 4-6) (after vehicle diagnosis) (X3 M) >> Removing Lambda oxygen sensor for the cylinders 4 to 6

Removing Lambda oxygen sensor for the cylinders 4 to 6

WARNING: Hot surfaces  .
Risk of burning! 
  • Perform all work only on components that have cooled down.

Preliminary work 

Precondition

Battery ground lead is disconnected.

WARNING: Hot surfaces  .
Risk of burning! 
  • Perform all work only on components that have cooled down.
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.