The sound signal is a pretty simple thing, but very serious. Despite the fact that we rarely use the horn, this does not mean that it should not be in good condition. When the sound signals do not work or emit a quiet beep, accordingly, the devices must be replaced. However, there are things that can be repaired. And even the Japanese sound signal “Toyota” is no exception. In this article we will look at how to repair this part with our own hands.
Wire status
First, when a malfunction is detected, you should check the integrity of all wires and evaluate their contacts. In order to do this, you need to remove the signal panel. The winding on the wires should be intact, without damage. Even if there is a small crack, this is already a reason to replace a damaged part. If you do not change the wire at this moment, in a couple of thousand it will still make itself felt. Therefore, do not skimp on new parts and change them in time in case of breakdowns. Sound signals after replacing the wire can work again, but this does not always happen.
What to do if, after replacing the wires, the horn still does not work?
This indicates that you need to check the status of the relay and switch. This is done using a special device - a multimeter. He can accurately determine the current state of the part. With a visual inspection, not the whole picture is visible, so it is better to do a check with a multimeter. If no clicks are heard on the relay, be aware that the vehicle has a faulty electronic circuit. You should also check the sound signals for voltage. To do this, take the multimeter again and connect it to the signal. Click on the horn and wait for the sound. If he did not appear, this indicates a complete malfunction of the device. In this case, you need to install new sound signals on the car.
Is it worth it to immediately run to the car shop?
Of course not worth it. Sometimes a horn cannot make sounds due to the rust that has settled on its contacts. After the negative readings of the multimeter, you need to move a little, and it is best to disassemble all the connections. If rust is found, it must be removed using potent agents. If this does not work, the only way out is to buy a new part.
What if the beeps are very quiet?
If the horn acts, but at the same time produces a quiet sound, several things can be the source of the breakdown. First, you need to check the battery charge. If the green indicator on the sensor is on, look for a breakdown in the horn itself. To do this, take a small screw and attach it to the adjustment lever. Each time, turning the screw a quarter, check the sound of the machine. Rotate it until the car starts to give a “healthy” signal.
And finally, useful advice. When you assemble the disassembled part, pay great attention to the gasket that is installed between the horn body and the membrane. If it will not be in the assembled spare part, consider that all work will be useless.