You may also want to check the brake pedal position sensor. If it is bad then you wont be able to engage cruise control until its fixed.

Thanks biw, forgot to add that when the transmission gets stuck in 3rd gear, i have to pull off the road and stop engine for something like a minute. From then on, i start the car again and it often shifts nicely to the last gear (4th) and i can even go for 400km that is if i dont get traffic that w...

Hello All, I drive a 2001 volvo S80 and hava a transmission service light on. This is what happens when driving; From a stop position, the gears will shift nicely but if slow the car down in a highway below 40kph, the transmission gets stuck in 3rd gear. I have changed the filter and fluid and i do ...