VW experts, some advice needed please.
Background: '03 1.8t Jetta. Rebuilt head installed to replace OEM after timing belt let go and head munched the fiddly bits. After the head replacement, the oil light would come on when driving after reaching highway speed. The light would flash 5 or so times, and the ECU would "beep" 3 times at him. He also claimed he could "smell hot oil" when exiting the vehicle after driving. A new oil pressure switch was installed, and now the light will come on after idling for a few minutes like at a stop light or the drive thru window, but not when actually driving, and the oil smell is gone.
Please help, my padawan google ninjitsu is not strong enough to tackle this issue.

