Assist systems not available messages caused by a steering wheel hands-on detection fault (Mercedes-Benz from 2020)

Engine / equipment

Mercedes-Benz with a capacitive steering wheel (code 266)

Period mentioned

Built from 2020

Symptoms

Messages on the cluster: "Active Emergency Stop Assist not available", "Active Lane Keeping Assist not available" or "Active steering assist not available".

Possible cause described

The steering wheel hands-on detection fails: the detection mat, its control unit, the contacts or the wiring. Mercedes-Benz releases new software and SCN coding for the HOSWD control unit (note LI46.10-P-078012).

Check for the garage

Ask the garage to apply note LI46.10-P-078012: do not replace the HOSWD control unit, update its software and check the steering wheel contacts, wires and ground connections.

Cost cited in the source

No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.

Sources from the original database