My car has 76 K on it with original trans fluid. I did put an aftermarket trans tube and stick on it without losing any fluid, so I assume - by the height of the warm fluid on the stick - that it still has plenty.
As I said the trans fault light comes on when it has sat for a couple of day, but if I let it warm up it shifts fine. The light stays on till I stop and restart. ands then it’s fine. It’ll be fine if I use it the next day, but if I let it sit a fe3w days, I’ll get the fault light with the concomitant hard shifts till it warms.
Any idea what is going on?