It depends on the type of system you have and what year.
2006 with Reset/Trip stick/button just below speedo,
Start with key "ON" with engine "OFF"
Press the reset stick several times until it says press Reset to enter Menu mode.
Screen will say press reset to enter System Check, press the reset stick twice again and the oil life will be displayed, press reset again and it will say Hold Reset if you would like to Reset. Press and hold reset stick until the oil life says 100% then turn key off.
The instructions are the same with the 3 button type system also just press the Setup button and the Reset button.
The Lube Shop of Camarillo, CA is #1
It may have not been reset properly.
rest change oil indicator on the dash after you have changed the oil
start explorer press setup when it comes to engine check push RESET it says new oil push and hold reset it busses and it is reset until next oil change
How to change mirror light/ signal on 2011 f250
It may have not been reset properly.
asy
As far as I know the keypad has to be changed ( my 1995 Ford Explorer XLT keypad doesn't light up anymore , also )
asy
My keypad doesn't light up anymore on my 1995 Ford Explorer and I was told that the assembly would have to be changed in order to fix the problem , it's not just a bulb
You can change the light bulb by this method.
pay someone else to do it
Maintence Required.