Cruise Control problems of the 2007 Jeep Commander

Under heavy rain, the vehicle leaks on the inside to the point of a big puddle in the floor of the driver side while stationary. This has also caused a problem with my cruise control and on-screen nav it now goes on and off displaying the Jeep logo as if the car was just starting up and I am in the middle of driving.

Cruise control still does not operate. Single touch power window function no longer works on driver and passenger windows. While commuting to work on the toll road, rpms registered between 2500-3500 going at a speed of 75. The majority of the time, it was between 3000-3500. I did not have the air conditional running. I was not accelerating and was not going up or down inclines to cause the higher rpms. After exiting the toll road, I turned and while accelerating to around 40mph, the engine stalled and the check engine light came on. As I was on an inside lane, I had to slow down to allow a semi to pass on the outside lane in order to be able to pull over to the side of the road. I had to place in park, turn off the ignition switch, and turn it back on. Check engine light remained on. My average mpg was 13. 9, lower than it should be. Leaving for my commute home, when I turned on the Jeep, the check engine light was no longer lit. I noticed during the commute that the rpms were not as high as in the morning, and also my mpg increased by almost a mile per gallon, and that was running at the same speed and I also was running the air conditiioning. Upon exiting the toll road, the vehicle jerked heavily while downshifting from overdrive. A jerky motion continued for the remainder of my commute (ranging from 30-55 mph). Please note that I do now take photos after the engine stalls to reflect the mileage and that the light is lit. I also now take pictures when the check engine light goes off.

Cruise control still does not work (day 2).

While idling in a driveway, the check engine and esp/bas lights came on. The vehicle did not stall. Shortly afterward, when driving about 55-60 mph, I realized the cruise control no longer works. I tried multiple times to turn it on, but it does not come on any longer. The esp/bas light went off about 10 miles later, after I stopped to fuel up the vehicle. The check engine light remained on. About an hour later and another 35 miles later, after making a stop, the check engine light did not come back on when restarting the vehicle. Later in the afternoon, while it was in the neutral gear and going through an automatic carwash, the vehicle stalled twice. The rpms were constantly up and down between 500 and 1500 rpms.

When the cruise control is engaged at highway speeds and the vehicle is traveling down a hill the cruise control will properly downshift to slow the vehicle and keep it at the set speed. If the vehicle is then shifted into neutral, the cruise control will disengage properly and the transmission will go into the neutral gear, but when shifted back into drive the transmission will re-engage and will slow the vehicle extremely abruptly as if someone slammed on the brakes with full force and will nearly lock-up the rear wheels on dry pavement. This will occur even if the cruise control is turned off before shifting back into drive. This has happened to me twice because of the placement of the shifter, and it was terrifying because of the speed I was traveling and the abruptness with which the vehicle slowed. If anyone would have been behind me I would have been hit and there is nothing that can be done to make the transmission not do that once the transmission has been shifted into neutral. The vehicle would become completely out of control if driving on anything but totally dry pavement.