Could be the fuse or relay....if you drive through a lot of puddles it could be water in the horn.....has happened to me.....
I'd first check the fuse box. There may be one labeled HORN.
On a 2000 Mercedes Benz ML430, the horn is typically located behind the front grille, near the radiator support. It is mounted on the driver's side and can be accessed by removing the grille or the front bumper, depending on your approach. If you need to replace or troubleshoot the horn, it's advisable to consult the vehicle's service manual for detailed instructions.
check the horn relay or the horn itself!
Check the fuse and horn relay.
I have had both issues as we.. Horn I got fixed a few years back by replacing the actual horn. Gas gauge seems to expensive to fix...
possible on same fuse
A loose wire on a 98 Dodge Intrepid car horn will make it stop working. Another reason it may stop working is a blown fuse.
The 1999 Mercedes-Benz horn relay switch can be found on the drivers side front quarter panel. The horn relay switch will be behind the headlight assembly.
yes, it is a fuse it will be labled int. lights/ horn on the fuse box
My wrx 1995 stopped working because of the carbon brush on the rear of the wheel. fitted after market neon horn swith to dash to get round it.
must CHECK HORN RELAY IN ENGINE COMPARTMENT SEEK A RELAY DIAGRAM BUT FOR MEMORY I BELIEVE IS THE NO. 4 RELAY. I CAN NO GIVE YOU AN ANSWER REGADING THE STEERING WHELL CONTROL.
horn location Mercedes Benz 2001 ml 320