Sequence of works
Fig. 9.31. On vehicles with air conditioning, the signal (arrow) installed in front of the radiator is accessible only after removing the protective grille
1. To remove the signal located in front of the radiator, open the hood and remove the protective grille of the electric fan (on cars with air conditioning) on the radiator grille. To remove the signal attached to the bottom of the bumper, place the car on supports and remove the lower protection of the engine compartment (fig. 9.31, 9.32).
Fig. 9.32. To troubleshoot the horn attached to the bottom of the bumper, first remove the lower engine compartment protection
2. Unscrew the signal mounting nut.
3. Remove the contact connector and remove the signal.
Publication taken from an online resource MercedesMan