August 1, 2020 Service bulletin

New ECU validation needed after replacing certain control modules

BMW technical service bulletin B090218 for 2019-2020 BMW X5, 2018-2020 BMW X3 and 2019-2020 BMW Z4 and others.

Bulletin number: B090218
Component: Equipment: other: owners/service/other manual
Summary: NEW ECU VALIDATION NEEDED AFTER REPLACING CERTAIN CONTROL MODULES: With introduction of the new Headunit HU-H3 (MGU Media Graphics Unit), there is a new protection mechanism against tampering. If one or more of the following components needs to be replaced, the secure connection between them must be re-established: MGU TCB Telematic Communication Box (ATM-02) RSE Rear Seat Entertainment and/or KOMBISP18 instrument cluster Prior to re-establishing this connection, an electronic certificate must be created in the BMW backend for importing into the Vehicle. After the replacement of one of the mentioned Modules, the Control Module needs a valid certificate for it to communicate with the other Modules.

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