Power Windows
The power windows of the E83 are controlled by the GM5RD similar to the operation in the E46. The anti-trapping feature has been modified and the anti-trap strip is not used in the E83. Anti-trapping is provided by the EKS electronics included in the individual window motors.
The SBFA (drivers door switch block assembly) is connected to the GM5RD via the LIN Bus. The passenger door switch and both rear door switch assemblies are connected directly via hard-ware to the GM5RD.