I have noticed that all five of my factory roof clearance lights have what I call stress cracks in them. Not for sure that would be the right term (stress) or not, but the cracks seem to be internal,can't really feel a crack on the outside lens. You really see the cracks best at night. As far as I know they are not leaking at all, no sign of in cab water leaks, but a couple of them look bad. I'm sure this will be a every couple of year replacement, but as long as the 3/36 is still intact might as well see if I can have them replaced under warranty first. Has anyone had the dealership replace them for this reason or does there have to be signs of water leakage before they will replace.
Tony
Tony