Functional description, see BMW Service Technology:
TIS -> Document -> SI Technology -> Enter SBT Number
SBT number:
In the E83 and in the E53 as of model year 2004, the all-wheel drive system xDrive will be fitted.
This system communicates permanently with the Dynamic Stability Control DSC8 and changed the drive torque distribution on the front and rear axles at the request of the DSC8. This means that xDrive reacts to detected tendencies to oversteer and understeer and increased wheelslip even in the initial phase.
If problems occur on deleting the fault code memory following a repair, use the following procedure:
Important:
In some cases, indicator and warning lamps for certain faults only go out after a short test drive.