Hi folks. 2017 X4M40 with about 50k miles, the last several weeks has been occasionally showing a Cruise control malfunction warning message. Lasts only a few seconds, normally happens only at startup although it did appear once while driving at 25 mph. Has never failed to engage the CC, and has never disconnected it while using it.

My mechanic read the codes but did not find anything related to CC (there was one about passenger seat occupancy sensor).

Any ideas about what could be causing this? It never stays on long enough to get a code reader on while the message is active.

Thanks.

John

I'll add to this... Same year/mileage and same symptoms.
At around 30K miles mark the paddles stopped working properly ( either both upshifted or did not react) - was mostly happening when I turn the wheel. Code read shoed short on one of the paddles - dealer replaced. Later on, this new thing started with cruise control malfunction.
Noticed that it is more likely to happen when I slightly turn the steering wheel and when it is cold.

Some 3/4-series forums suggest it could be the steering column module ( aka SZL), while others point to loose connectors.

Planning to take the steering wheel off one day and douple-check connectors.

Good news - looks like the issue was fixed by replacing the main wiring harness within steering wheel. ~$80 shipped.


This is the part I ordered: https://www.fcpeuro.com/products/bmw-connecting-line-steering-wheel-32307848337

Part number for my car was 32307848337.

There are two different P/Ns depending on features (check realoem).

Exciting! - this thing was driving me crazy...30 min fix well worth it 😄

Replacing steering wheel control column wiring harness solved this problem for me.
No more ACC fails.
Seems to me like this happens because of too much harsh steering or broken wiring harness.