Re: My first thread so be gentle
the door check strap is what holds it in position, it is easily replaced. it is bolted to the door by 2 bolts, but you will need to remove the door card and plastic liner to get the check strap off once the bolts are removed. the check strap is attached to the car by a small pin which can be pushed out.
the check strap will last forever if you tighten its 2 bolts and grease it at least one a year. this is part of the annual lubrication and bolt tightening of all locks & hinges, it is important that you do this maintenance, ignoring it leads to check strap failure but also bonnet catch failure which is more serious.