It depends entirely on which (factory installed) radio you have. The instructions are different for each one. My suggestion would be to Google the words "Ford Focus clock" and see what results you get. Of course if you have an "after-market" radio you'd have to follow theinstructions for the suppliers particular radio.
Your computer reset itself.
The check engine light on a 2002 Ford Focus can be reset by disconnecting the battery for 1 to 2 minutes. This resets the vehicle's computer and clears the light.
On a 2002 Ford Focus : In the front passenger footwell , behind the kick panel ( there is an access hole )
where is the radio fuse located in the panel box of a 2002 ford focus
50 liters ( 13.2 U.S. gallons )
The clock on a 2002 Honda Civic can be reset in two ways. Removing the right tire will allow access to the clock controls. Our using the radio buttons to select the appropriate time.
50 liters ( 13.2 U.S. gallons )
That's a 7mm Allen key.
well it calls for 5w30 for my 2000 dohc zetec engine.
it takes 5
prise the chrome cover down from left hand side
Just heard ten minutes ago from my son who has borrowed my 2000 s500 telling me he has reset the clock via the radio in the car.