I just bought a ford KA for my daughter that's suffering the exact same (and what I'm told is a very common) fault. Reading some other blogs i understand the problem is the 'resister pack' that is probably burnt out. I'm told it's behind or under the glove box. £40ish
Please let me know how you get on colinpears@supanet.com
Colin
January 2007
the switch is probably broken, try www.nsec.co.uk they stock thousands of parts for focus'
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix cars.