some warning light issues.
My 04 2.0l jetta seems to run fine.Every now and then the oil light comes on while shifting up through the gears.This may happen once or twice in a month. The garage said the oil pressure is fine.Once the water temp. light came and the gauge said the temp. was normal. I turned off the car and restarted it ,the temp. light didn't come on again.I read to check for grounds.or is the computer at fault