The horns on my vitz 2008 are fluctuating, There seems to be no pattern to it,they will turn off randomly. sometimes one of the two horns will turn off or sometimes both of the horns wont work which is a pain in heavy traffic. wires on the horns seems fine and the connections are solid. what could be the issue?
The relay pack of vitz has been squeezed into a small box near the battery, it is sort of a junction for all electrics, it is prone to getting oxidation at contacts. Open it up and clean the contacts, my car is not here now otherwise could ve posted the pic for you.
Do check horn wire as well before opening the pack