I took my W212 - 350 CDi for its first 'A' service today, the dealer told me they would need it for 2 to 3 hours and would include the software update for command while they were doing the service.
When I picked up the vehicle they told me I needed to bring it back for the command update as this will take at least 5 to 6 hours and they cant do it while its on the ramp for service.
anyone know if this sounds correct ?