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If, when you turn on the ignition, you do not see the check engine light come on in the dash then your ecu is in need of repair. The ecu has to energize the relays that send power to the fuel pump and injectors. Until that check engine light comes on, no power will be sent to the relays, thus no start. There are a lot of posts on this site about this, called the delayed start check engine light problem.
On the dim dashlights, there is usually a rotory switch that you can turn to increase the power to the dash lights. In earlier vehicles it was part of the headlight switch and you just turned it one way or the other to adjust the brightness. In newer vehicles it is a switch like a knob sticking out of the dash on its side that you push up or down to change the brightness of the lamps.
The Maintenance Required light is probable on because the vehicle has hit the 50,000 mile mark and it comes on automatically so that you take the vehicle in for maint. of the emission system. If this is the case there is usually a way to reset it untill another 50,000 miles go by. I would read the owners manual, or better yet pickup a Chilton manual for the vehicle and see if it says how to reset the light. You also may want to have the vehicle checked to see if any trouble codes have been signaled. Good Luck, RAC