This button is for customizing the way your transmission shifts. If you have it set on w ( winter ) the transmission starts off in second gear and shifts at a low rpm. The s ( sport or summer ) setting starts in first gear and revs to a higher rpm before shifting . You will possibly get better gas milage in the w position but with the lack of the engines power.
The overdrive warning light might start flickering when you are driving because of low transmission fluid. This light could also come on because of tension on the transmission while you are towing a boat or trailer.
Generally speaking, overdrive (O/D) is the highest gear in the transmission. On most cars the automatic transmission has 3 speeds and Overdrive (forth speed). Overdrive allows the engine to have less rpm with higher speed in order to have better fuel efficiency. When you switch it on, you allow the transmission to shift into overdrive mode after the certain speed is reached (usually 30 - 40 mph depending on the load). When it's off, you limit transmission shifting by third speed.In normal driving condition the overdrive should be always on.You may need to switch it off when driving in mountainous area or towing a trailer.[The automatic transmission automatically shifts from OD to the 3-th gear when it feel more load. When it feels less load it shifts back to the O/D, but under certain conditions, e.g: driving uphill or towing a trailer, the transmission can not decide to stay in OD or to shift into 3-th speed and it starts to shift back and forth. That's the time you may switch it off and help the transmission to decide.] .You also may need to switch it off when you want to slowdown using the engine braking, for example, driving downhill. [For more details, check your owner's manual]
I recently had this very problem with my 1996 Buick Century and it was in need of a new transmission and would have cost $1100-$1500 to fix, so I went and bought a Toyota Corolla.
car starts but shut off while driving
The hours you called out are exactly 24 hours during the work shifts.
Check the transmission fluid level.
The "ECT" stands for Electronically Controlled Transmission. The "Snow" mode starts the transmission in 2nd gear rather than first so that the wheels don't have quite as much torque and are less likely to spin in inclement weather. Secondly, it changes the whole shift pattern of the transmission, particularly when accelerating from a start or when passing. It has the transmission change into higher gears earlier so that, again, when it is bad conditions you are less likely to spin the tires each time the transmission shifts up and when you go into a passing gear, it down-shifts only one rather than the usual 2 gears so that you don't have as dramatic a change in the power going to the wheels.
The cars torque convertor maybe failing or slipping. Have a nechanic test your transmission. Have your sterring checked as well. Another option to have tyre balanced.
sounds to me like its probably the alternator.
blown transmission
it needs a new transmission