Q: Why do some cars with AUTO headlights not turn on the taillights also?

asked by on

A mazda with headlights on Auto will not turn on the taillights automatically.

Hello, thank you for writing in. The automatic lights you are referring to are likely the Daytime Running Lamps (DRLs). These are an automatic safety feature that is more for other drivers around you than for your driving comforts. This system does not turn on the tail lights, and they are dimmer than your normal headlights. You may often see drivers in rain or dark conditions without taillights and dim headlights. These people are likely not paying attention to their vehicle. Look to your owner’s manual for more information on the lights and how to best utilize them. With that being said, if your tail lights are not working when they should be, then you are going to need some electrical testing done. In this event, contact our service department to schedule an appointment.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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!
  1. Home
  2. Questions
  3. Why do some cars with AUTO headlights not turn on the taillights also?

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: Headlights not working - 2005 Buick LeSabre

Hello. A common fault is the combination / multi-function switch. This is the signal / high beam switch located on the steering column. If you need help having this checked, a qualified professional from YourMechanic can come to your location...

Q: When turning off car, windows open, car unlocks, headlights turn on

The totally integrated power module on these cars have been known to cause various intermittent problems. Sometimes these modules are reprogrammed to fix issues with them and other times the module has to be replaced. You can try to have...

Q: How do you operate the headlamps?

Your car’s headlamps (or headlights, if you prefer) are vital for driving during any time when visibility is low. That includes nighttime driving, dusk, dawn and driving during inclement weather (snow, rain, fog, etc.). Of course, you’ll need to know...

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...
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...