On the Hydraulic Control Unit as shown in the picture below, it seems to me that the Hydraulic control unit consisted of ABS and ASR unit together. I only find the SP on the ABS unit. See the red circle on the picture below. Is there another SP on the ASR Unit or does this one SP take care of both ABS and ASR together?
I also include two instructions on ABS/ASR bleeding the unit. It only shows one SP. So I assumed the SP take care of both ABS/ASR hydraulic Control Unit. Does the pre charged ASR pump located below the Master Brake Cyclinder have a SP or does it need to bleed as well?

Comments, advice, feedback is greatly appreciated.

Attached Thumbnails

 

Attached Files

	Brake Bleeding with ASR.pdf (214.5 KB, 215 views)
	Mercedes brake bleeding with asr abs instructions.pdf (137.5 KB, 94 views)