My cruise control keeps shutting off while driving.

1. It seems to work ok for a little while, then starts shutting off

2. Bumps / hills etc. don't seem to affect when it shuts off

3. I just got new tires on the car (seems unrelated?).

 

Does anyone have any suggestions as to what could be wrong, or what I could check?

 

My car is a 2005 Outback 4 cyl with manual transmission.

Does the circuit shut off altogether, or is it like hitting the cancel switch and you just have to set your speed again?

There's a TSB for the 05 OBXT MT's... they'll 1st re-flash your cruise, and if it still happens, then they have to add a spacer on the neutral position sensor.

Mine does it.. but i'm also out of warrenty...

Does the circuit shut off altogether, or is it like hitting the cancel switch and you just have to set your speed again?

 

Yes, like cancel.