If you have ash on your car, there are a few things you can do to clean it off. The first thing is to use a hairdryer. Put the hairdryer on low heat and turn it on. Then, put the ash onto the dryer and wait until it is completely dry. If that doesn’t work, you can use a vacuum cleaner with the hose attachment. Put the vacuum cleaner onto low power and point the hose towards the ash. Then, turn the vacuum cleaner around so that all of the ash is covered in suction. Finally, if all of those methods fail, you can use a bucket and water to clean off the ash. Pour water over the ash until it is wet and then scrub it with a brush. ..