Functional description, see BMW Technology:

TIS -> Document -> SI Technology -> Enter SBT Number

SBT number:

Overview of functions

The last 72 Check Control messages are stored in the instrument cluster. Only important Check Control messages are stored. Check Control messages concerning e.g. opened doors are not stored.

Diagnosis instructions

This test module can be used to read out the stored Check Control messages together with the kilometre reading when the Check Control message occurs.