What Causes Low Voltage in Mercedes Horn?

[JourneyDella]

Mercedes horn low voltage may be caused by the following reasons: Contact point erosion: Prolonged pressing of the horn can easily cause erosion of the horn contacts, creating impedance. This reduces the current flowing through the electromagnetic coil. The electromagnetic force may then be insufficient to attract the armature to drive the diaphragm for normal vibration, resulting in a hoarse sound or even no sound at all. However, when the horn is continuously sounding, if an instantaneous strong current passes through the impedance, it can still function normally, leading to intermittent operation. Poor contact at electromagnetic coil terminals: Some terminals of the enameled wire in the horn's electromagnetic coil are connected with aluminum metal rivets instead of being securely welded. If the insulation paint at the ends of the enameled wire is not properly removed or the rivets are not tightly pressed, it can easily cause poor contact, leading to malfunctioning of the horn. This type of fault is caused by the quality of the horn itself and cannot be repaired; it requires replacement with new parts.