Notes on ESD protection (Electro Static Discharge) (M4 2021-2023)

WARNING: This page is about a different car, the 2025 BMW M4, 2024 BMW M4, 2023 BMW M4, 2022 BMW M4, and 2021 BMW M4. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

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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

Attention!

Refer to SERVICE INFORMATION .

Statically charged persons can discharge themselves when they tap 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.

Courtesy of BMW OF NORTH AMERICA, INC.

Example:

Mechatronics control unit.

Courtesy of BMW OF NORTH AMERICA, INC.

Courtesy of BMW OF NORTH AMERICA, INC.

Attention!

Do not tap pins and multi-pin connectors directly!

Only tap the housings of electrical components.

Attention!

To avoid damaging or destroying electrical components as a result of electrostatic discharge, it is absolutely essential to observe 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

Personal protective equipment:

Electrically conducting clothing (high wool content, antistatic shoes required).

These can primarily be identified by the logo on the side.

Courtesy of BMW OF NORTH AMERICA, INC.