The fact that it comes and goes depending on brake temperature points more toward sand contamination or minor glazing than actual wear through. Glazing from heat soak on the way back down from dunes is real but usually responds to a few firm stops from highway speed to clean the surface. If the noise persists after that then it’s worth…

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High clutch adaptation values without hard fault codes is actually a really useful diagnostic starting point that suggests the clutches are worn but not failed yet. A fluid change and adaptation reset at that stage sometimes buys significant time before anything more serious is needed.

Sweet smell near the engine area is something a lot of people don’t connect to coolant until a mechanic points it out. By then a slow leak has often been going on for longer than expected. Catching that smell early and getting it checked prevents a small leak becoming a costly overheating situation.

The damage being invisible at first is exactly what makes it easy to ignore. By the time scratches are obvious the paint has usually been taking hits for a long time already.

The heat degradation point is real, a battery that feels fine in winter can noticeably struggle by mid summer. Larger vehicles feel that drop faster since they’re already drawing more power.