To reset the 2011 Acura CSX maintenance light, please follow these instructions:
1. Turn the ignition to (II) – do not start the engine. 2. Press the SEL/RESET button to the left of the steering wheel repeatedly until the engine oil life appears. 3. Press and hold the SEL/RESET button for more than 10 seconds until the engine oil life blinks. 4. Press the SEL/RESET button again for more than 5 seconds and the engine oil life will reset to 100. 5. Turn the ignition off and then start the engine to verify the indicator has been reset.