What is cheapest but reliable tool I can get to program cluster?

Dealer info only. Contact a Ford dealer repair shop.

There is no turning it off . You have to take it an have it diagnosed an fixed , PATS is software programmed into instrument cluster microprocessor , PCM - engine computer , PATS module > If you don't do it right you'll have a vehicle that won't work , start , run etc... The ford dealer mite be able to go into the different modules an turn it off . But would need ford factory scan tool ! You'll need to call the dealer !

check gumtree.com or the dealer.

Check all fuses sometimes fuses tie things together that u would not think have anything to do with one another there should be a full fuse box lay out in the owners manual

You need a factory scan tool , it only costs about $3,000 ! Does the back lighting work every where else , Instrument cluster , switch on steering wheel, door switch's etc.. If so you have another problem , because all the back lighting is controlled by the SJB - smart junction box , that's what ford calls there body control module !

How to reset the airbag light on in a 2002 KIA Sedona

it may be that the switch they replaced was defective. it would not be the first time

hello i also had this problem but it was soon sorted when i took my glasses off my head and put them on properly and if that dosent work take it to your local audi dealer glad to help regards mr fixit

unfortunately , no you can not.
Ford is good like this... they make their own tools for any number of FORD ONLY items , such as fasteners and etc. so that you can not work on them without buying their tools first.
The security features are definitely something you will need to contact the dealer about.
Wish I had a more positive answer for you!