Adam,

Ill bet it works on Toy Yodas, but then they are bullet proof, so Ill probably never know (last one did 200,000 miles In 15 years (Petrol 2.0), and the alternator and the rest of the electrics bar a battery or two were as new.

Lee,

yes I know how awful / poor quality PSA cars are!

And know of lots of resets, though Ive not had to do the BSI one so far.