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

asked by on December 30, 2016

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

Electrical components are not working Inspection $79.99 - $89.99 Get a Quote

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.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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

What others are asking

How do I adjust the headlight auto off timer?

The exterior lights will stay on for a short time after you exit your vehicle and close the doors. You can adjust how long the exterior lights stay on before they automatically turn off with the following steps: 1. Turn...

How does the autolamp feature work?

If your car is equipped with automatic headlight functionality, then it also has a delay setting. This keeps the headlights on for a brief period after you turn off the ignition. You can customize the length of the delay, too....

Front light goes on and off

Hi and thanks for contacting YourMechanic. This is a normal condition for the lights to flash when setting the locks. This is an indicator to the driver that the locks have engaged and the security system is now active. If...

Driver side headlights are dim. When I flash brights, the engine dies.

Hi and thanks for contacting YourMechanic. First check the battery cables for a clean and corrosion free contact. If the battery is good, then there is a problem with the wiring in the steering column. There is a short crossing...

Headlights keep turning on and off while driving

The problem you describe about the lights going off and on are usually caused by the headlight bulbs overloading the head light switch built in circuit breaker. I would recommend replacing the headlight bulbs with factory specified bulbs and then...

Car taking too long to pick up speed

Hello. If the engine seems to lack power than that can be caused by a number of things. Most of the time this is caused by a weak fuel pump or a failing catalytic converter. As for the headlamp the...

Headlights go out randomly, will come back on after

As silly as it sounds, the issue is most likely caused by an intermittent failure in your Totally Integrated Power Module (TIPM). Of course it’s important to have the circuit and connections checked, but the TIPM is the most common...

Driving lights not working

You may have a pair of blown out headlights. I have seen this a lot with Hyundais for some reason. There is a possibility that there may be another electrical problem as well. I would ask for help from one...

Driver side D1R headlight not working even after replacing bulb.

You will need to most likely need to replace the ballast for the light that is not working and should also check connections for any heat related damage and replace connector along with the ballast.

Related articles

Symptoms of a Bad or Failing Headlight Closure Relay
If the headlight doors will not open, close, or are opening and closing on their own, you may need to replace the headlight closure relay.
Are Colored Headlights Safe and Legal?
Most Most vehicles have standard headlights that emit yellowish light. However, there are bulbs on the market that are different colors. They’re marketed as “blue” or “super blue,” and there is a great deal of uncertainty around their safety and...
How to Replace the Headlights on a Toyota Prius
Your headlights are one of the most important safety components for your car. A broken headlight bulb can endanger yourself and others on the road.