Why are the toyota yaris dashboard lights not working?

If the dashboard lights in Your Toyota Yaris aren't working, the first thing to check is the dimmer switch. You might be surprised at how often that switch can be turned so the lights aren't on. However, in most cases, if these particular lights aren't working, You just need to change a fuse. There are two fuse boxes in the Yaris. The one You're looking for is beneath the instrument panel on the driver's side of the passenger cabin. Always make sure the new fuse You use has the proper amperage. If it's not the fuse, You might need to replace a dash lightbulb. It's always a good idea to disconnect the battery first. If none of these fixes help, You may have a wiring issue that needs to be addressed at the dealership.