Hello.how i can reset the message on the computer when the service in done?not want go to dealer...

If you try the search function here or look in your owners manual you'll find it.

owners manual if on fixed servicing, vag-com or similar if on variable.

To reset the service reminder hold down the trip counter reset button when turning the ignition key on and watch the display (I can't quite remember exactly what happens, I've not got the manual to hand)

To reset the service reminder hold down the trip counter reset button when turning the ignition key on and watch the display (I can't quite remember exactly what happens, I've not got the manual to hand)

This applies to fixed servicing only, if your are on variable you will mess up the computer.