Ford has the brake disconnect on the bottom of the master cylinder and when it stops working the cruise doesn't turn on/engage.
Try disconnecting the switch on the bottom of the master cylinder and then either check it with a meter to see if it reads closed or while driving the vehicle see if the cruise will engage (be very careful doing this as hitting the brakes will NOT turn off the cruise control as it normally would).
If the cruise works, you need a new switch and it runs about $35, be careful not to cross thread the switch when you put a new one in or you'll have to replace the master cylinder as well.
Saturday, February 21st, 2009 AT 1:31 PM