[PeteF]

Before you spend money, try what worked for me. I had the same issue on a Ford Taurus. I Googled the problem and saw several instances where people with the same problem sprayed WD40 or electrical contact cleaner into the Emergency Hazard switch. Especially when the Hazard switch is mounted on top of the steering column or dash where dirt and dust can settle into it and foul the contacts. I didn't disassemble anything, just sprayed contact cleaner into the switch a few times. It worked for me. Good luck.