Sorry Piper !Very nice instructions, thank you.
You have failed the admission test to even touch a Sprinter ,a Land Rover or even a Prius let alone something likes someone's BMW Audi or Ferrari in my shop ,
Read this and inwardly digest!! PLEASE!
YOU DO NOT compress nor back feed displace used brake fluid by compressing the calipers .
Rather you clamp down the hose at each caliper with a special tool open the bleeder valve fully, and displace the fluid dwelling in the caliper into a suitable receptacle. This avoids carbonized fluid & junk from being back forced through the ABS brick with possible expensive remediation to the check valves etc. Read to fix this monumental mistake :- Mucho pile of green money with Benjamin Franklin's portrait on it pi$$ing himself with glee !
Many caliper pistons are made of a ceramic faced materials (even lowly Fords) ,so forcing the piston back with a screwdriver can seriously damage the piston face wrecking the caliper to be destined only for the trash can .
Rather you use a special tool to compress it without damaging the component.
If the fluid is more than 40,000 miles old replace it .
Reading this reminds me of why my senior tech fired two You Tube Grads, he called Bevis & Butthead.
Shiver me timbers