unless they let the circuit go dry then you wouldnt have to use the computer to bleed the brakes
you only use the laptop (pps)
when you have changed the abs block or need to re code it
i work for peugeots so out expert van are prob the same system and we've never had a problem but some vans do suffer the servos leaking giving that spongy feeling
are they using a vacum or pressure bleeder