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61 35 ... Notes On ESD Protection (Electro Static Discharge)

Special tools required: 

NOTE: Electrical components which are particularly sensitive to electrostatic discharge (electronic control units, sensors, etc.) are marked with the ESD warning symbol.
E  -Electro
S  -Static
D  -Discharge
IMPORTANT: Read and comply without fail  with the notes on this subject from Service Information 2 06 04 128. 

Statically charged persons can discharge by touching 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: Touching Electrical Components
G04727627Courtesy of BMW OF NORTH AMERICA, INC.

Example:

Mechatronic control unit.

Fig 2: Identifying Mechatronic Control Unit
G04727628Courtesy of BMW OF NORTH AMERICA, INC.
Fig 3: Precaution For Mechatronic Control Unit
G04727629Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Do not touch pins or multi-pin connectors directly! 
Touch electrical components by their housings only.
IMPORTANT: To prevent electrical components from being damaged or destroyed by electrostatic discharge, it is absolutely essential to comply with the following instructions:
  • When replacing electrical components, leave the replacement components in their original packaging until immediately before they are to be installed
  • If necessary, always return a removed component in its original packaging (always pack the component away immediately)
  • Read and comply with user information on using the associated special tool 12 7 060