For 3 to 4 weeks, intermittent braking problems with car. After driving about 3 miles from start, stopping at 4 stop signs, passing through 3 traffic lights no problems - driving using cruise control set at 55-65mph, driving up hill, often the engine is accelerating, when I put my foot on the brake because I want to slow down - the brake pedal does not move - I can't push it down on the first try. Until yesterday, the second attempt at braking worked normally 100% of the time. The cruise control does not disengage until the brakes can be engaged. Yesterday I had to try the brake pedal three times before I was able to push the brake pedal down and engage brakes. Have been able to recreate problem several times, the incident yesterday occured when I was trying to recreate. Problem has occured at least 20 times in past weeks. In 2 incidents the pedal initially resisted but I was able to push it down without making a second attempt - driving on a sort of level area. Always happens when the cruise control is engaged, actively controlling speed of car. Never experienced the problem or duplicated when cruise not actively engaged. No problems at interstate speeds 75-80 mph. Never happens in town cruise engaged set to 35-45 mph. Its been happening more and more. Since the incident where it took 3 tries to engage the brakes. No longer using cruise. First visit to dealer not able to determine the problem (after 3 incidents) going back to the dealer's on Jan 2. drive 66 miles round trip each work day New Mexico road with many hills, high altitude above 6,200 ft. Question - next section has a Y/N question about oem - don't know what that is.

- Gallup, NM, USA