I had a problem last month where one of the rear exterior door handles stopped working. Over the weekend the front passenger door handle also stopped working. Both feel like there is a reduced amount of friction compared to the working doors so I assume this is some sort of linkage problem. As this has happened on 50% of my doors I'm hoping this is a common problem that someone may have resolved before. Does anyone know how I would go about fixing? Can I remove the door handle without removing the door panel?