A couple of days ago, coffee maker turned it self off after brewing. This happened 3 times. Tonight coffee maker would not turn on. Nothing lights up. Unplugged and plugged in again, still nothing. Maker is less than 2 years old.

If it is under warranty ,call the manufacturer .There are many causes to the service code , coffee beans ground too fine ,setting for 3 beans may be too much if the beans are small, try setting with one bean...
Valve, round cover , spring loaded , on top of brew group dirty, metal valve pin may be covered with deposits from coffee oils . check manual or call a service center , screen of bottom piston plugged with coffee oils , to silver screen plugged with coffee oils .
none of the super-automatics like oily , shiny or over roasted beans .

why question to all of this is with a "self clean" button, why doesn't it every tell you to clean it..... ??

Try cleaning with white vinegar, using the method described in the owner's / instruction manual.

To Program Automatic Brew
1. Make sure clock is set for correct
time of day.
2. Press PROG button and digits will
flash.
3. Press H and M buttons until desired
brewing time is reached.
4. Press PROG button to confirm setting.
Digits will stop flashing and
return to set time of day.
5. Once brewing time has been set,
follow this procedure:
• Follow steps in "How to Make
Coffee."
• Push AUTO-ON-OFF button once
and "Auto" will be shown in display
indicating the brew cycle will begin
at the set time.
NOTE: If AUTO-ON-OFF is pushed
twice, the light will glow and brewing
will begin immediately. Press AUTOON-
OFF once to turn off and once
more to set programming mode.

Try completely unplugging your pot and then plugging it back in. It is possible that this will reset the programming in your coffee pot. If this doesn’t work, I recommend calling Brevell customer service and they will either help you or probably send you another pot.

In Uk i would take it back to shop as faulty and get either replacement or full refund as it is not fit for purpose. Depends where you live and what consumer rights you have.

The green light is used for setting an automatic brew time. Turn the brew button until its red and your coffee will begin brewing.

switch could be faulty.

A common problem that can occur with the Cuisinart coffee maker is it will stop brewing, even when there is water ready to be transformed into coffee. The machine still turns on and works like it should, but does not continue brewing an entire pot of coffee, and acts like it has finished brewing even when there is still water sitting in the bin. This type of problem is pretty common among various coffee makers, and usually occurs when there is a problem inside the machine.
One of the best ways to fix this problem is by flushing the coffee maker out with a vinegar solution, which can be made with equal parts of vinegar and water. It should be poured in the same place as the water that is ready to be brewed, and will help to clear out the machine and make it ready to start brewing again. This problem is usually caused by calcium building up within the machine, and the vinegar helps to clear out any blockage to help it start running smoothly again.

1. Set the desired Brew-Start time.
a. Turn the FUNCTION KNOB to “Prog”.
b. Set the time you want coffee to begin
brewing by using the minute and hour
push-buttons. Follow the same instructions
you used to set the time of day, in
the To set the time section above.
2. Turn the FUNCTION knob to the “Auto On”
position. LCD will display the current time.
3. Lift and release the FLIP SWITCH. The
green indicator light will come on to remind
you that the programming function is in use.
At the programmed time, the red light will
come on as well, indicating that the brew
cycle is starting. Both lights will go off when
keep warm cycle ends.
NOTE: To reactivate the auto-on feature to
start brew cycle at the same time another day,
simply lift and release the FLIP SWITCH. The
green “auto-on” light will illuminate.

The manual can be found here:
http://www.cuisinart.com/share/man/25_man.pdf