2011 BMW 535xiFACTORY OEM SERVICE PROCEDURE

61 35... Notes on ESD protection (Electro Static Discharge)

Special tools required:Β 

  • 12 7 060
NOTE: Electrical components which are particularly sensitive to electrostatic discharge (electronic control units, sensors, etc.) are marked with the ESD warning symbol.

EΒ  -Electro

SΒ  -Static

DΒ  -Discharge

Statically charged persons can discharge themselves when they touch electrical components.

NOTE: Humans can only detect a discharge starting from a level of approx. 3000 V.

The danger threshold for electrical components already starts from a level of approx. 100 V.

Fig 1: Identifying Electronic Control Units And Sensors
G04727627Courtesy of BMW OF NORTH AMERICA, INC.

Example:

Mechatronic control unit.

Fig 2: Identifying Mechatronic Control Unit
G04727628Courtesy of BMW OF NORTH AMERICA, INC.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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