Peugeot 406 - Michael Copp
I have a 1997 Peugeot 406 2.1 LXTD Family estate. I bought the car as a demonstrator. It has been an excellent buy but it has always had an irritating rattle which seems to come from the near side rear door area. I have taken the trim off on several occasions and searched in vain for the source of the rattle. I have also removed the trim housing the seat belts but with no success. Any ideas? It sounds like a piece of plastic rattling around inside a a plastic pot. The rattle disappears when travelling at higher steady speeds.

Any ideas appreciated.
Re: Peugeot 406 - Andrew Moorey (Tune-Up Ltd.)
On two occasions when I have had a similar problem one was the door check mechanism cured by coating the mechanism with thick grease. The other was the seat belt inertia mechanism. The actuating ball was rattling on anything other than smooth surfaces. Renewal of the seatbelt was the answer.
Re: Peugeot 406 - Pat O'Halloran
I had a similar problem on my Accord - my dealer cured it by lubricating the door switch for the interior courtesy light although I didn't believe it when this was suggested.