There is single car access through Alldata. I have their professional system and often use it as it is very complete. I presume their single car DIY version would provide similar info but only for one car. www.alldata.com

MB has a $20/day site and has most of their info available there:
www.startekinfo.com \

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician