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Brief description, PMM

Brief description, PMM

The Power Mirror Memory (PMM) function is available as an option.

Different positions are stored and activated via the seat memory function. The mirror on the passenger door can also be tilted downwards while reversing by putting the selector lever in the R position and pressing the tilt-down switch on the mirror switch unit.

P bus and I bus


In the Saab 9-5, all the car's control modules are connected to buses with the exception of the ABS and SRS control modules.

The buses consist of a P bus (Powertrain Bus) and an I bus (Instrument Bus). Both buses are connected to the MIU (Main Instrument Unit). The buses are electrically isolated from each other.

The P-bus has a data transfer rate ten times higher than that of the I-bus.

All information sent out on a bus by a control module is available to all other control modules connected to the bus. The MIU ensures that the information that is available on one bus is also available on the other.