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In this guide, we take a look at the functions of the center console switch cluster (SZM) used to adjust the steering column and how to diagnose the SZM module with an OBD-II diagnostic scanner.
Steering column adjustment is on the left-hand side of the steering column.
SZM is the BMW term for Centre Console Switch Cluster. When the driver adjusts, the steering column signal is sent to the steering column switch cluster (SZL), which controls the steering column motor.
If your BMW SZM module fails, you may notice that you can no longer adjust the steering wheel.
If you are experiencing problems, a good starting point is to read fault codes from the SZM module.
For this step, you will need a diagnostic scanner that is capable of reading, clearing codes from the BMW SZM module.
If any code shows PRESENT status, the problem needs to be fixed before the code can be cleared.
Note that the SZM is connected to the IHR/IHKR/IHKA control unit via a 14-pin connector.
When purchasing a BMW scanner, verify that the supports your BMW model and year.
By YOUCANIC Automotive Experts Published on: Tuesday, November 13, 2018. |