It *may* be possible, if you're really stuck (but it's not hugely likely), that in can be changed by plugging in of a diagnostic computer to the cars on board diagnostics.

Find a friendly well-equipped independant and they'll have a look for you I'm sure.

__________________
190E's:
2.5-16v 1990 90,000m Astral Silver
2.0E 8v 1986 107,000m Black 2nd owner
http://www.maylane.demon.co.uk/190esmall.jpghttp://www.maylane.demon.co.uk/190esmall2.jpg