I swear I wont do ANY DIYs on my car again -- So far, I've put in both New Batteries, Remanufactured Alternator, Pulled All Fuses in the trunk Fuse Box turn by turn with Clamp Ammeter on the battery to detect any leakage --- no luck..

The car showed low batt sign today with battery voltage reading 12.7v ... Oh Lord why did I not get extended warranty... Anyone knows any good indie shop in Chicago area with expertise in electrical faults ?

In regards to changing both batteries, does that also include the AUX battery?

yup

I had same problem! i just tighten up my battery terminals and boom fixed.....i forgot to tighten them up after i put my system in it...

That was the first thing I checked.. its good

I was pulling fuses one by one to see current leakage drop, Fuse # 9 in the trunk happened to cause 100mA of current just by itself (car shutoff) - interior lights and wiper's 'water' sensor's probably this fuse.. Any one knows how to troubleshoot from here ...

Also, Park lamps drew: 4.26 Amps each side - Is this normal ?

its the aux. battery up front under the cabin filter. its about $70-90 easy fix.

Abboushi, I replaced the Aux Batt as well..

Aux battery will not give you a conv feature light......

Any item on the CAN network staying awake can cause a current draw. COMAND, AGW, door control modules, SAM's, TCU, etc......

May something you want a dealer to look at?

Dealer called today when I pushed him to leave the park lights on for 5 mins then turn the car up & "low volt conv featurees unavail" would pop up --- so it did, he said the car's drawing INTERMITTENTLY 3 Amps form the front SAM ---- would be a 1000 bucks to replace it -- might trade it in for a lex tomorrow

Glad to hear you got the problem isolated -- sorry to hear that it's going to cost you $1000 to get fixed!


Regards,
paul...

Well not really - the SA says this is the first step towards diagnosis - If after SAM replacement the current still leaks then they'd isolate to which entity -- i kept asking him why dont u isolate now before replacing SAM ?? He gave some weird explaination..

he can be bull****ting for you to fork up the $$$$....take it to a independent shop that only deals with german cars....thats where i took mine and they found out it was the battery terminal

oh yeah, thats my concern too djrabbi - I'm trying to get him to return the new battery that he recommended changin out -- anybody knows any good indie shop in the chicago area ? --

google it lol...no one ever answers here quick enough lol