I have a 2003 Dodge Grand Caravan. The front windshield wiper fluid will sometimes spray properly & sometimes not at all. The fluid is topped up and when you try to spray it it will turn the brights on. The back window is not a problem for spraying. This has happened in the past when it suddenly stops working & then starts working again. Any ideas on how to troubleshoot this?

 

Icy fluid line? Check for a consistent 12vdc at the pump every time you engage the switch. If it's intermittent, change the switch. If it's not, change the pump. As far as the high beams turning on, that's a new one on me. The players are the multifunction switch, the Front Control Module (FCM), the Body Control Module (BCM) and the PCI data bus. If I had to bet I'd pick the switch module. That's only a guess. Could try pulling the IOD fuse for 2-3 minutes. This will reset the BCM and data bus.