Reset service light indicator, engine oil life Ford focus, year 2009 reset instructions:

This is how you do it on a MK4 Mondeo, worth a go:-

1. Close all doors.
2. Turn the ignition key to position II.
3. Simultaneously press the accelerator pedal and the brake pedal and hold for a minimum of 15 seconds.
4. The oil change reminder indicator will turn off. This confirms that the reset procedure has been correctly completed.