Thanks for this, I think I will ask the mechanic to check on ATF oil. The mechanic told me that their is faulty in the wire circuit. Hence, I need to change the wire connecting to Gearbox, and it cost for 1k.

What I am afraid is the faulty in ECU, they said even they don't guaranty by changing the wire will resolve the issue, if it still can't resolve it, hence, I need to consider to change ECU.

Do you know how much the ECU price?
And could you please advise if you find there's a recommended perodua service having good mechanic?

Thanks,