After being away for 2 months I returned home and my 99 230SLK's, with 77K miles, battery was low and car would not start. After jumping it, car started, idle hunted between 500 and 1000 rpm, depressing accelerator had absolutely no response and BAS/ASR light stayed on solid. Manual states after a low voltage condition to start car and rotate steering with to reset the ESP. Did not work. Replaced battery and no change. There are no alarm codes. Does anyone have any ideas?