The brief
Miss June's 520i had yucky, sticky door handles, the coating had degraded into a tacky mess and the handles weren't pleasant to use, with the mechanism behind them feeling worn too. She brought it in to get them sorted. It's a small thing, but a door handle you don't want to touch and a mechanism that's wearing only get worse. The door handle is the grip you pull plus the mechanism inside the door, the lever and linkage that releases the latch, and on these a soft-touch coating on the handle that can break down with age and heat into a sticky residue. When the coating's gone and the mechanism's worn, the fix is a fresh handle assembly, the affected handles renewed.
The diagnosis
A check confirmed it, the handle coatings had degraded into a sticky finish and the handle mechanisms behind them were worn, the release not as crisp as it should be. The latches themselves and the wiring checked out. That's a handle replacement on the affected doors, complete handle assemblies, fitted and adjusted so they release the latch cleanly.
The work
The door cards were removed where needed, the worn, sticky handle assemblies taken out, and new genuine BMW-spec door handle assemblies fitted, the linkage adjusted so the latch releases cleanly on a normal pull, the connections checked, and everything refitted. A check confirmed the doors opened and closed cleanly from the fresh handles, smooth and pleasant to use, and the comfort access working as it should.
The outcome
Fresh door handles, smooth and clean to use, no sticky residue, a crisp release, and the doors opening and closing properly. The 520i went home with the handles sorted. A degraded handle coating and a worn mechanism only get worse, so changing the assemblies put it right.