If you have a broken armrest in your car, there are a few things you can do to fix it. First, try to find someone who can help you remove the armrest. This will require some strength and dexterity. If this is not possible or if the person you are working with is not experienced, then you may need to take the armrest apart yourself. Once the armrest is removed, look for any screws that were missed when the armrest was installed. These screws should be replaced if they are missing or loose. If all of these steps fail to fix your broken armrest, then you may need to take it to a mechanic or repair shop for repair.