2 weeks b4...it was light onso the diagnos said the driver site tensioner belt initial circuit errorso the shop changed it for methen the light went offtomoro it went ON backthen the shop said normally the another sensor below the passenger seat of driverduno wat it is called la....need to be changedso changed alsoeverything happy for 1 week...yesteday... my friend adjusted the seatand the was an umberal underneath of it DARNNN the light ON againi heard this is very commong n repeating problem in e46..appreciate you guys advice!!thanks