Re: Plastic cover on the back of leather front seats?
My passenger seat has a slight annoying rattle so I took the plastic cover off to try and find the problem.
Anyhow, the cover simply slots in and clips on / off in 2-3 seconds. Sounds like it has either not slotted in (aligned) or it's not clipped on correctly.
Start by sticking your fingers under the bottom section and pulling up. From memory there are 4 clips, 2 at the bottom, 2 in the middle and it slides / slots in at the top so you need to pull it downwards.
Hope this helps.