I have a 2001 1.8T VW New Beetle. My coolant light always comes even after long periods of driving. I refill it with a little water and it goes off, but then goes on after driving it for a bit. It’s never gone off this much before.. is it just a faulty gauge? Also, my low oil pressure light always comes on too, but only when I’m slowing down and going downhill. These lights have been going on for a couple months and I was told if I really did have low oil pressure my car already would have broken down and I would have noticed it by the way my car drove. I also hit a big rock before my low oil pressure light came on, would that have anything to do with it? I do regular oil changes every 3k miles with Mobile1 5W-30 for high mileage (my beetle is at about 128k). The light still came on after doing an oil change. I don’t know where the sensor would be and if this is a serious problem and if I should be worried or not?