W204 brake bleeding and flush

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sceh

Active Member
Joined
Jul 31, 2015
Messages
230
Car
w123 240TD
2021 W204 C180 diesel
I need to change my brake fluid and most likely bleed the brakes bleed the brakes but the WIS is not too clear.
To flush, it is simply a case of opening each nipple and letting it drain?
The WIS implies six nipples but I can only find one per caliper unless I am missing something?
If I decide to bleed, should the ignition be on AND the engine running? (I have a Landrover and this is the case with their ABS)

Anything odd I need to look out for? I have done this on other cars but the WIS has sown some doubts!

Thank you for any help and pointers
 
oops 2012 not 2021
 

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