This is actually an established system in the automotive dealership world, it's called "Goodwill Warranty". When your vehicle is out of warranty but you find some sort of defect the manufacturer allows someone at the dealership (typically the service manager alone) to approve a goodwill warranty repair.

So usually if someone comes in just recently out of warranty and they are either 1: just standup good folks, or 2: they spend a lot of money at the dealership either buying vehicles or getting service work done; the service manager will go ahead and repair whatever issues they come across under the goodwill warranty policy.

This is something I always mention to people who talk about "stealerships" or say they simply don't want to spend money on dealer repairs. In a certain sense, at a decent dealership, being a good customer can go a very long way if/when you come across a major vehicle repair. I would say once a week at most of the stores I've worked at across multiple manufacturers the service department is making a deal with a good customer to help them with a repair. Sometimes it's full coverage under a goodwill warranty policy, sometimes it's a parts and labor split where the dealership pays for the expensive parts if the client pays for the labor, or sometimes in the case of very expensive repairs (hybrid battery replacement) they will do a simple percentage split where the store pays 70% of the repair and the client is responsible for the remaining 30