This problem may set a code in the vehicle computer. If so, dealer can read code using Star computer.

I use Costco gas mostly, my gas gauge would not alway register full after filling tank. Never mention this to dealer. At Service B, dealer read code and repaced sending unit, I believe inside tank. Told me problem is due to additives added to gasoline in USA.

No problem since replacement, however, I understand the replacement part has not changed.