I know diagnostics can be prone to failure, but I want to know if this failure is correctly diagnosed, not if the diagnosis is in fact correct.
Earlier my starter motor emitted a higher pitched noise than usual as my car started from cold, the sound was louder and sounded faster than usual, as if it was spinning freely, still my car started no problem.
The next 4 or 5 starts took longer than usual, the sound was also usual so it didn't call my attention.
On the 6th start I heard a click sound (probably a relay) and absolutely no sound is heard from the starter motor. The car didn't start.
The battery is fine and so are all other electrical components, so is it safe to assume that the issue is coming from the starter motor and replacement of that single part is probably the best route of action.
Is this a sound diagnosis?