Had problem with headlights coming on by themselves - found fault due to water in Fuse Box in engine compartment
Solved the problem by cleaning and drying out fuse box, headlights working correctly except Full Beam not coming on. When switched on stalk to full beam - blue warning light on dash comes on but headlights do not go on to full beam. Anyone have any ideas?
Cars & Trucks - Fiat - Grande - 2006 Fiat Grande Punto
Answers & Comments
Check the high beam relay. Swap with like relay in the fuse box. Also check the fuse.
Inside of the fuse box cover "should" be the layout of the relays and fuses. Otherwise, check owners manual. Sometimes they place the layout there too. The turn signal / high beam switch supplies the control power to the relay, not directly to the lights. The contacts in the switch aren't rated for the current draw created by the high beams.
Apologize for the owners manual comment. I didn't read far enough into your comment to me.