1999 Toyota Avensis inside door handle replacement

[DaveLab]

How to replace the front and rear inside door handles on 1999 Toyota Avensis?

[Konrad C]

Get yourself an Haynes manual. The manual covers most of the subjects including removing the door handles.
Here is info from another source -    

The Haynes manual procedure for internal door handle removal as follows - After removing the door card, using a small flat blade screwdriver or similar, release the retaining clip at the front of the handle by inserting the blade between the door skin and handle, then lever away. Slide the handle forward to release from door. Then disconnect from the rods. The process is easier than you think. 
 

[Konrad C]

Here is a video which is the closest to the what you need. The only difference is a retaining that the Avensis does not have. Instead, where the person used his thumb, you use a screwdriver to lever the retaining clip.