Skip the auto shop - Our mechanics make house calls

Q: Left turn signal and DRL aren't working properly

asked by on

The left turn signal and the Daytime Run Lights bulbs haven't been working properly. The left turn signal and DRL bulbs are continually on, even when the ignition is Off! The left turn signal never flashes, even with the hazard lights turned On. My boyfriend replaced the bulbs, but that didn't work. He checked the engine bay fuse box, plus the fuse unit near the driver door. All of that is good and there was nothing burned out. He thinks it’s the turn flasher/signal relay, but he doesn't know where to find that. Also, one other thing: the dash isn't showing any warning light/message that the left turn signal and the DRL lights have failed. Plus, the interior dash left turn signal isn't flashing quickly to indicate a failed bulb. What should we do?

A couple of faults could cause this issue. The most likely would be a wiring issue, the turn signal relay or an improper bulb. The most likely cause in this case would be a wiring issue, if the lights were shorted to power, they would stay on at all times and the fault would not trigger the ECU that a bulb is out. A qualified technician, such as one from YourMechanic, will be able to diagnose your light problems and proceed with the appropriate repairs.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: What do the turn signal indicators mean?

The turn signal indicators are located on your instrument panel. When one of the indicators flashes, then that turn signal is currently turned on. If both indicators flash simultaneously, then your hazard lights are currently on.

Q: Turn signal issues on a 2000 Ranger

It could be. The emergency flashers and the turn signal flashers use different flasher relays in them. They are a separate thing. You'd want to pray it is just the flasher because if it isn't the flasher, then it is...

Q: Window regulator stopped working

Hello, there are a variety of causes for the power window regulator to fail. The most likely would be the regulator, switch, and regulator motor. Given that these have been replaced it should take care of the issue. Humidity can...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...