Many people are confused by the differences in bleeding brakes & FLUSHING the brake fluid every 2 years.
THE question was asked whether or not need to connect to the SD laptop when you FLUSH the brake system? & that answer is YES. Otherwise some of the old fluid will remain in the system!
YOU can bleed air from the system w/o connecting the correct equiprment.
IN fact going all of the way back to 1992, the W140 chassis (400SE & 500SEL) required jumping the solenoid on the master cylinder to completely FLUSH the brake system as well.
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)