What does the DRL module control?

A dedicated daytime running light module is used in some vehicles to automatically control low beam headlight operation. The module receives input from various sensors and switches including the ambient light sensor, ignition switch, headlamp switch and parking brake switch.

How do you troubleshoot a DRL valve?

If One DRL Is Working, Check the Bulb, Socket, and Switch If only one daytime running light is not working, it most likely has a burnt out bulb or a bad switch. Remove the socket from the light and see if the bulb is dark or if the filament is burned out, which means it needs to be replaced.

Can you disable DRL?

If your vehicle is equipped with a “DRL OFF” setting, they can be turned off by twisting the headlight control knob to “DRL OFF.” For vehicles listed below equipped with DRL, the system can be disabled by your local Toyota dealership.

What does it mean when DRL light comes on?

The DRL indicator light means that the daytime running lights are ON and operating properly. When the headlights are turned on, the DRL indicator light should turn off.

Why are my daytime running lights not working?

If the high beams, daytime running lights, or headlamps are not working consistently, you may need to replace the headlight switch. If your daytime running lights do not come on, stay on when the car is off, or produce a burning smell, you may have to replace their module.

How do I know if my DRL module is bad?

Symptoms of a Bad or Failing Daytime Running Lamp Module

  1. Daytime running lamps do not come on.
  2. Daytime running lamps stay on while the car is off.
  3. Burning smell.

Do daytime running lights stay on at night?

Daytime running lights will come on and stay on all the time during the day and cannot be turned off unless the normal headlights are turned on.

Why do people turn off daytime running lights?

Because DRLs provide a degree of forward lighting, many motorists fail to turn on their standard lights in low-light, low-visibility situations. This means the rear lights of certain vehicles are not illuminated.