there are two horns situated behind the left-hand side of the front bumper.
Disconnect the battery negative terminal.
Working under the vehicle remove the splash shield from under the left-hand front of the bumper.
Disconnect the wiring connector from the lower horn
Unscrew the securing bolt and remove the two horns.Hope this helps and I am assumoing this car is a Laguna 2
Roger Pratley
January 2009