Skip the auto shop - Our mechanics make house calls

Q: Why are my signal mirrors flashing wile my truck is turned off its just the blinker in both mirrors, mirrors are factory

asked by on

Haven't drove all day went outside and both signals in the mirrors are flashing unplugged battery and plugged back up and they are still flashing

Hello. If any sort of lights keep flashing when the vehicle is turned off then there is likely some sort of electrical issue present in the vehicle. A few common causes for lighting malfunctions are a faulty turn signal switch, a faulty relay, or bad wiring. In some instances the headlight switch can short out internally and send power to the lights even when the switch is set to off. Power is also ran through a series of relays, the turn signal and flasher relay. If either of these short out they too can send power to those lights, causing them to function incorrectly. A short as a result of worn or faulty wiring can also cause the lights to stay on even when the car is off. I would start by checking the relays to see if they are functioning properly, and then move on to the switch and finally wiring.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Why are my signal mirrors flashing wile my truck is turned off its just the blinker in both mirrors, mirrors are factory

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

Get a quote

What others are asking

Q: Humming Noise

The fuel pump in the fuel tank is the humming noise you are hearing. The pump will begin to become noisey if the fuel filter becomes clogged restricting the pump volume and pressure. If the pump is starting to go...

Q: My interior rear-view mirror broke off... How can i re-attach it or is it even possible?

Hello, thank you for writing in. The mirror will can be reattached. The main question is if you can remove the part of the clip that is broken from the mirror itself. If you cannot, you may be in a...

Q: Putting in a new battery but the horn, lights, and wipers come on and won't stop.

Check the light switch, the horn switch, and wiper switch. If the switches are not working, then they will need to be replaced. If the switches are good, then there is a loose or broken ground wire on the steering...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...