Pre-safe
pre safe is standard with disctronic plus - are you sure you have the radar cruise (will have a shiny black bit in the front grill 5" x 5")
all other cars get distronic (conventional cruise control) and the grill is conventional all over
what is BSD ?




pre safe is standard with disctronic plus - are you sure you have the radar cruise (will have a shiny black bit in the front grill 5" x 5")
all other cars get distronic (conventional cruise control) and the grill is conventional all over
what is BSD ?
By my understanding if it is called Distronic or Distronic Plus it includes the radar sensor in the front middle of the car. I believe Distronic was the name of the system when it did not stop the car yet. After stopping was added the “Plus” was added in the name.
as you point out there was optional radar cruise on the w220 or w211 that can adapt speed to traffic in front called distronic but it gave up at slow speed as it couldn't cope (and possible I'm muddled about name above)
a very rare and very expensive option that came out with w221 was distronic plus - this adds three radars at the front allowing the old radar functionality of the option on the w220 but the extra two radars allowed it to drive in town and cope with other movements, thus it can cruise to a complete stop and if less then a few milliseconds pick up speed all on its own when traffic clears






