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Home >> BMW >> 2007 >> Z4 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 651 (General Electrical System - Repair - E90/91) >> 35 ECUs, Modules >> 61 35 ... Notes on ESD protection (Electro Static Discharge)
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61 35 ... Notes on ESD protection (Electro Static Discharge)

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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.

-Electro

-Static

-Discharge

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: Precaution For 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.
IMPORTANT: Do not touch pins or multi-pin connectors directly! 

Touch electrical components by their housings only.

Fig 3: Precaution For Handling Pins Or Multi-Pin Connectors
G04727629Courtesy of BMW OF NORTH AMERICA, INC.
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