1999 passat 6cyl has CEL brake ABS oil symbol and battery lights on. Recent oil leak in front of engine . Repaired already. New battery put in. Has problems with missing when slightly throttling. When idleing no problems noted. Does have horn blowing unless removing positive battery post a few times with someone else turning engine over. Also noted to sputter and surge when accelerating and will progress to point that it jumps into next gear after whining out. Does have a sun looking symbol on left bottom of instrument panel with MAF next to it. Does that mean anything. Does have a number that changes as driven in same vicinity, is reading 26-29. Any suggestions or questions I will keep checking. Thanks in advance.