Will the turn signal not work if the flasher is broken?

[ArabellaLynn]

Yes, if the flasher is broken, the turn signal will not work. Here are the relevant details: 1. Flasher: The flasher is a flashing device used to indicate changes in the direction of the vehicle. It features a new circuit design, consisting of a low-voltage switch circuit, high-voltage switch circuit, pulse generation circuit, dual-transistor amplification output circuit, and two sets of light indicator circuits. 2. Fault causes: There are many reasons why a car's turn signal may not work, including open circuits, flasher relay failure, excessive contact gap, and other factors. For mechanically controlled vehicles, the issue is usually a faulty flasher, and replacing it will fix the problem. For computer-controlled vehicles, it is necessary to check the fault codes and system programming.

[JasonMarie]

I often encounter this issue at the repair shop. A faulty flasher relay can indeed cause the turn signals not to light up or flash, because the flasher is a small relay responsible for controlling the current's on-off cycle. Once it malfunctions, the circuit may be interrupted, causing the lights not to work at all; or it may get stuck, keeping the lights on without flashing, which is dangerous while driving as others can't understand your intentions, leading to accidents. Actually, the turn signal system also involves bulbs, fuses, and wiring. I recommend that when owners notice a fault, they should first check if the fuse in the fuse box has blown. For older cars, replacing the flasher yourself is also feasible—it's usually located under the steering wheel. Pay attention to the dashboard warning lights while driving; they can alert you to circuit abnormalities in advance. Regular vehicle maintenance can prevent such sudden failures. I've helped friends fix this multiple times—timely action can save a lot of trouble.

[VonPiper]

I once experienced a flasher failure on the highway where the turn signal suddenly stopped blinking, which was quite frightening because the car behind didn't understand I was turning and almost rear-ended me. When the flasher is broken, the turn signal may completely go out or stop flashing, but this isn't the only reason—sometimes a burnt-out bulb or a blown fuse can cause the same issue. It's best to check after parking: open the hood, inspect the relevant fuse, and replace it with a spare if there's a problem. If that doesn't work, it's likely the flasher needs to be replaced—it's not expensive and can be bought at any auto parts store. I recommend not ignoring this issue as it affects daily driving safety, especially in rainy weather or at night when visibility is poor. I make it a habit to quickly check the lighting system every week to prevent malfunctions.

[Chad]

As a novice who just got my driver's license, I asked my instructor this question. He said a faulty flasher definitely affects the turn signals, possibly causing them not to light up or blink. The principle is simple: the flasher controls the blinking frequency of the lights, and if it fails, the current won't flow and the lights will go out. It's not hard to diagnose yourself: start the car and turn on the turn signal. If the light doesn't come on and there's no clicking sound, the flasher is highly suspect. Don't rush to waste money—first check the manual to locate the fuse and replace it for testing. A repair shop can diagnose it more accurately—safety first.