Why do my turn signals only work sometimes?

You might be working with a bad wire, a bad flasher relay, bad bulbs, a faulty switch, or a faulty connector between the signal switch and the flasher unit. First, check to make sure the bulbs are in working condition. No damaged filaments or darkened zones.

Do turn signals work when the car is off?

Yep – ignition has to be on in order for signals to work. Engine doesn’t have to be running, though, but the vehicle can’t be in accessory.

What does it mean when your blinker stays on?

You may be dealing with bad bulbs, a bad flasher relay, a faulty turn signal switch, or a bad wire or connector between the flasher unit and the turn signal switch. First, check the bulbs to see if they are still in good shape: No darkened areas or damaged filaments.

What happens when I Turn Off the headlights?

The left side signals all work fine. If I turn the headlights off, the right side turn signals including on the dash go off. If I flip the right turn signal switch while the headlights are off, all of the turn signals flash and my license plate lights even flash as well. I have replaced the turn signal switch and relay and that did not fix it.

Why do the turn signals quit working when the lights are on?

The reason the turn signals quit working when the lights are on, is that a 12-volt signal is now being sent down the opposite wire, which was acting as a ground before. Once the lights are turned off, everything will work fine again.

When to turn off the head and tail lights?

Now if there was only some sort of government standard to get morons to turn OFF the DRLs and turn ON the head and tail lights when its dark, rainy, foggy or snowing out……

Why do rear lights have to turn off?

Berlitz went on to tell me that the same idea applies to the rear lights, saying “if indicating the brake lights have to turn off…The reason is a better signal perception/ [recognition].”