The Leica M8.2 typically has a lifespan of around 40,000 actuations, but with careful maintenance and attention it can last up to 100,000 shots in total.
To preserve its optimal performance, make sure not to use any abrasive materials when cleaning the interior surfaces of the camera housing. Doing so will help protect it from any unexpected issues in the future.
Dust inside the camera housing can be highly damaging if not addressed quickly, as it can cause problems with photos taken in brighter weather outdoors.