Help on 01 s.60 2.4L turbo
 

My car wont go past 20 mph or 2000rpm messega boards reads engine system urgent and transmission service required has this happened to you guys and do you guys have any idea what it is?

You need to have the engine fault codes read (via an OBD2 code reader). no point in guessing without that info. You can look for a friendly indy tech to scan for codes, rent a code reader from Autozone etc or buy one at Harbor Freight.