04 passat 1.T, ignition coil 3 keeps misfiring. replaced coil for 3rd time in 1 year. last time i changed coil was last month. usually, tranny light flashes on/off and loss of pwer of course. this time OBD II indicated misfire in 3 and 4. Replaced just 3 and problem persisted. so i changed 4 also and power is back but now tranny light stays on (solid light, no flashing). Thoughts? please help