I have power flushed all my MBs with the Motive unit and it works great. Well except the 2014, they did it as part of the servicing for the CPO, so it will be due this coming spring.

You can engage ABS just going down your street (assuming you don’t live on a busy street). Get up to about 25 and stomp on it and hold it in (pretend a kid or dog just ran out in front of you). Just be sure no one is behind you. This will engage the BAS (first introduced on the W210) as well as ABS. You will feel the pulsing in the pedal and the car will come to a controlled stop with no squeals and most importantly no pull to one side or the other.

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The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech