1999 Volkswagen Golf indicator

Dear guys!
would u tell me what could be the problem please.
when I close my car with the remote the cantral lock and the alarm is works. Only one bottom for that on the remote. So after my INDICATOR LIGHTS STAY ON. Sometimes both sometimes the left only. Before if I press it long the bottom on the remote it undo that (of course after 5 min playin with it. Now I have to take the the plugs from the battery for that. Is anyone know what could be the problem. I took to mechanic they wanna change the switch for the indicators and things but I know its not the problem. Never had problem while I drive the car before. Only when I close it. Thank u guys wait for your answer.
David email: d_barta@yahoo. Com in case.
tx again