Dynamic stability control (DSC) unit does not respond after programming
BMW technical service bulletin B340121 for 2017-2021 BMW 530I, 2017-2021 BMW 540I and 2018-2021 BMW M5 and others.
- Bulletin number
- B340121
- Component
- Electronic stability control: automatic (ASC)
- Summary
- DYNAMIC STABILITY CONTROL (DSC) UNIT DOES NOT RESPOND AFTER PROGRAMMING: After programming the vehicle using ISTA, the DSC control unit does not respond. Or: In the case of a BMW Remote Software Upgrade, the customer gets a Check Control message: "BMW Remote Software Upgrade failed. Vehicle is not operational. Please call BMW Roadside Assistance."
Owners of these vehicles have filed 13 complaints in the driver assistance category.
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