Spanner light on dash

Hi all.i have a 2008 fiat ducato . A warning light in the shape of a spanner has come on in the dash which I believe to be a service indicator . The van has recently had a full service but this light has only just come on. I have read on the net a procedure to reset it using the mode button but Haven't had any success in getting it to go off or resetting the service interval. I am just wondering if I am doing something wrong or does the van have to go to a fiat dealer to reset it . As I said the van has recently had a full service but not at a fiat dealer.
Thanks

Gerh....
Where in Donegal are you?
I will reset it for you if required as we have the full diagnosis gear for nearly all cars/vans.
I'm near Ballybofey, won't cost you anything to reset it for you.

No need to talk about Ken like that Nick

Didn't know he was going around flashing a spanner, John!

I am not sure about yours but the Transite can be reset if you hold your foot on the brake and throttle at the same time and switch on the ignition holding them on till it flashes very quikly it's worth a try Edd