How to repair a dented car body using hot water is indeed well known by the general public, even many have proven this way. You can do this even though the bumper part of your car has a rear parking sensor. However, if you want to use a safe method and do not damage your car, you can use Auto Hail Repair Denver services.
But remember, this method can only be done for types of bumpers that are made of plastic or carbon fiber so that when you flush it using hot water it can be easier for you to pull out the part of the dented car. This is in accordance with the laws of physics that you learned when you were in school first.