LEMON Manuals: Even more car manuals for everyone
Home >> BMW >> 2021 >> 840i xDrive 2D Convertible >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Engine Electrical System -- Repair (G14, G15, & G16) >> 12 14 Engine Control Module, Sensors >> 12 14 521 Replacing the crankshaft sensor (840i xDrive coupe/convertible/Gran Coupe sedan) >> Removing the crankshaft sensor

Removing the crankshaft sensor

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

NOTE: RISK OF DAMAGE 
Electrostatic discharge. 
Damage to or destruction of electrical components. 
  • Leave the electrical components in their original packaging until they are being installed. Only use the original packaging for returning the product. Always package removed components straight away.
  • Read and comply with user information on using the associated special tool 12 7 060.
  • Only tap the housings of electrical components. Do not tap pins or multi-pin connectors directly.
  • Wear electrically conductive clothing and antistatic shoes (with ESD symbol).
  • For additional information see: NOTES ON ESD PROTECTION (ELECTRO STATIC DISCHARGE) .
G14230389Courtesy of BMW OF NORTH AMERICA, INC.