There is nothing to worry about.
After the maintenance service, the dealer should have done the resetting for you.
Here is an explanation of the indicator light and how to go about resetting it.
MAINTENANCE REQUIRED REMINDER LIGHT/ENGINE OIL LIFE INDICATOR RESET - PROCEDURE 3
1. For the first 8000 miles after maintenance required indicator is reset, the MAINT REQ'D indicator light illuminates when the ignition is turned on, then will go out after 2 seconds. When mileage is 8000-10,000 miles, the MAINT REQ'D reminder light will illuminate for 2 seconds, then blink for 10 seconds, and then go out. When mileage exceeds 10,000 miles, MAINT REQ'D indicator light illuminates and stays on while ignition switch is in ON (II)
2. To reset the MAINT REQ'D indicator light, turn ignition switch to OFF position. Press and hold the SELECT/RESET button. While still holding button, turn ignition switch to ON position, with engine off. Hold SELECT/RESET button for about 10 seconds until indicator resets.
3. If MAINT REQ'D reminder light does not reset, ensure headlights, parking lights, or both are turned off when resetting reminder light. The MAINT REQ'D indicator cannot be reset if any of these lights are on. If vehicle is equipped with daytime running lights and lights come on when ignition switch is turned to ON (II) position, daytime running lights must be
disabled before indicator light can be reset.
Thursday, June 3rd, 2010 AT 10:06 AM