Is the ABS and TC sensor one and the same?
Intermittently, when I turn the key to start the car, nothing happens for a second then the starter engages and the car starts and runs fine. Changed starter, coil packs and swapped relays for ignition also had charging system and battery tested all fine. It can go for days between incidents.
Unfortunately intermittent problems are difficult for anyone to diagnose. Only when it will not start can you try to test and diagnose the issue.