We just got a 2012 focus that had been sitting for 3 years and the steering wheel airbag cover was very very tacky to the point it would turn your hands black if you rubbed it. I tried several times to clean it with soap and rubbed it down with oil and scrubbed it with a bristle brush to no avail. This black goo reminded me of the tar that is found on the south Texas beaches and we have always used ronsonol lighter fluid (used in zippo lighters) to get the tar off our feet so I tried it on the steering wheel and it worked! Just remember it's lighter fluid so it is very flammable but will evaporate fairly quick. I used a blue shop towel with a little ronsonol on the towel and about 10 minutes of going over the sticky parts and viola no more stickiness.