Q: Horn blowing when high beams are turned on.

asked by on January 09, 2017

When I turn on or flash my high beams my horn blows until I cut them off... How can I fix this issue?... Thanks for the help!

My car has 34 miles.
My car has an automatic transmission.

Electric Problems Inspection $79.99 - $89.99 Get a Quote

Hello, thank you for writing in. There is an electrical short somewhere that is delivering a power supply to the horn when the lights are turned to high. This means the wiring is touching somewhere. There are other more complex ways for this to happen as well. This typically includes issues with the switch and clock spring. The only way to find out where the voltage is coming from is by tracking it. This can be done with a voltmeter if equipped. Typically you need a wiring diagram and a general understanding of how the vehicle is wired. For more help with this electrical testing, contact our service department to schedule an appointment.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

What others are asking

My car has a coolant leak but the engine is not overheating.

Since you have had the water pump and intake gasket replaced in the last two years, I would recommend having the system pressure tested and inspected to see if the radiator is leaking or the water pump is leaking again....

Bad Ac compressor locked up and has been bad for a year will it have extra damage?

Hi Tiffany. Thanks for writing in today. The AC compressor is a stand alone system, meaning that if it's damaged, it won't necessarily damage other vehicle systems. The clutch on the compressor is what allows the pulley to engage and...

I have a 2008 ford E-350 extended passenger van, it was idling rough eventually that day shut off and wouldn't come back on.. it w

Hi Sabrina. Thanks for contacting us today. One thing to remember about OBD-II trouble codes is that they indicate the source of the code being triggered - not always the source of the problem. In this case, it's quite possible...

Check engine light came on and car stopped

A failure such as this could be due to the fuel pump failing or essential sensors such as the crankshaft or camshaft position sensors failing. It is likely that diagnostic trouble codes have been recorded by your vehicle's PCM (powertrain...

Car shaking

Unfortunately there are many different reasons that could cause your Honda Civic to shake. These reasons include a lack of adequate fuel pressure, faulty spark plugs or ignition coils, or even weak or broken engine mounts could all cause that...

Battery died

Hello! A battery may die for a number of reasons. In old age, a battery will lose its ability to recharge, which, by definition, makes the battery bad. An alternator is part of the car's electrical system, and is built...

Having to add a ton of oil, what’s going on?

The volume of oil you are using may actually be an acceptable amount in the eyes of the manufacturer. To find out the exact amount of oil your car is using, you would have to go through a oil consumption...

Brake lights work but no tail lights. Half of my dash cluster lights up no gauges... Please help

Hi there. It sounds like you have a series of electrical issues going on here. From my experience, with this vehicle, the combination switch needs to be tested first. Most of the time, the switch shorts out internally and this...

Engine coolant disappearing

If the engine has a coolant leak that is not external to the engine or cooling system would not have anything to do with the transmission repairs. You need to have the engine head gaskets and intake manifold checked for...

Related articles

How Are Car Wires Protected From Damage?
The highest tech cars can contain miles of electrical wiring. Wires must be secured and protected from heat and debris in order to work properly.
2012 Honda Odyssey vs. 2012 Mazda 5: Which One Should I Buy?
Passenger vans may be one of the most maligned classes of vehicles. From being called "Mom-mobiles" to being mocked extensively by those who have not experienced the comfort and ease of getting into and out of a van, vans just...
What to Do If Your Car Switches Get Wet
Your car switches are electrical components. They operate internal and external vehicle functions that require low currents in some cases...