1999 CV S model, 201K miles. The 'set/accel' function no longer works. It is still possible to set the cruise by turning the system on with the 'on/off' switch and then hitting the 'coast' button. While the system is then functioning in the cruise mode, the accelerate function of the 'set/accel'
switch does not work. If you hit the brake while in cruise mode, the 'resume' button functions normally and takes you back to the previously set speed. If you want to set a new speed, you have to turn the system off, then back on again, and once again set the speed with the 'coast' button. How do I go about troubleshooting this system? My first guess would be that the 'set/accel' switch is bad, but I wasn't sure how to get it out of the steering wheel to check it with a meter, and then replace it if it was bad. My dad uses the cruise control every time he drives, so I wouldn't be surprised if the switch were worn out with as many miles as are on the vehicle.