| The needle shake seemed to increase with the manual mileometer kept resetting on its own- approx every 1-2 days min, but not the clock, a scary one was when i was driving at a junction and changing lanes the needle shook and i lost powersteering for a few seconds, then it came back!
Battery is now replaced with heavy duty Bosch, and 5 days and later no problems all seems fine now, hopefully the battery cured the issues. my car is 4.5 years old and the battery was BMW (so maybe original battery?)
I do have 600w ICE, so i guess my existing battery was on its last legs and the ICE took its toll, strage thing was the car started first time every time, nice lively start too, this is why i didnt suspect the battery at first. | 
