Why doesn't the Volvo XC90 horn sound?
1 Answers
Volvo XC90 horn not sounding specific reasons are as follows: 1. Contact point erosion: Prolonged pressing of the horn causes erosion of the horn contacts, resulting in a certain impedance that weakens the current flowing through the electromagnetic coil (reducing electromagnetic attraction). 2. Moisture due to poor sealing: Car horns have good sealing properties, but over time, the sealing may degrade. 3. Poor contact at the electromagnetic coil terminal: The terminals of the electromagnetic coil inside the horn are not soldered but crimped with aluminum metal rivets. If the insulation varnish on the enameled wire ends is improperly treated or the rivets are not securely crimped, poor contact (false connection) can easily occur, causing the car horn to work intermittently.