DRL stands for Daytime Running Lights. On a Honda Civic, the DRL indicator on the dashboard shows the status of the daytime running lights: they are normally on during daytime driving, and a warning or fault indicator suggests there may be an issue with the DRL circuit that should be checked.
What the DRL light means in a Honda Civic
Daytime Running Lights are designed to improve daytime visibility by keeping a lower-intensity headlight output active when the engine is running. The DRL indicator on the instrument cluster typically signals that the DRLs are active. If you see a warning symbol or the light behaves abnormally, it may indicate a fault in the DRL system that could require service or component replacement.
Normal operation
When you start the engine, the DRLs usually illuminate automatically during daylight hours. Some Civics dim or turn off DRLs when headlights are switched to ON or when the automatic headlight setting is engaged. Some trims also offer a DRL off option in the vehicle settings; if this is chosen, the DRL indicator may reflect that state.
Before you begin checking the system, keep in mind that DRLs are separate from the main headlights and are intended for daytime visibility. If your car is equipped with auto headlights, DRLs may behave differently depending on the ambient light level and the mode selected.
Common DRL faults include the following:
- Burnt-out DRL bulbs or failed front corner bulbs
- Blown DRL fuse or a blown main headlight fuse
- Faulty DRL module or resistor in the headlight circuit
- Wiring damage, loose connectors, or corrosion in the DRL circuit
- Low battery voltage or charging system issues affecting DRL operation
- Software glitches or an incorrect DRL off setting in some trims
If the DRL warning light remains on after these checks, or you cannot identify a cause, have a Honda technician diagnose the DRL system. Driving with non-functioning DRLs can reduce daytime visibility and may be regulated in some areas.
How to diagnose and what to do
To diagnose DRL issues, follow these steps:
- Inspect exterior DRL bulbs (front left and right) to ensure they are not burnt out.
- Check fuses labeled DRL and related headlight fuses in both the engine bay and interior fuse boxes; replace if blown.
- Examine the DRL relay (if equipped) and the headlight control switch for proper operation.
- Look for wiring damage or loose connectors in the front bumper area and along the headlight harness.
- Verify the battery health and charging system; address any voltage issues that could affect the DRL circuit.
- If the issue persists, have a dealership or qualified mechanic run diagnostic codes with an OBD-II scanner to check the DRL module and related controllers.
Note: Some Civics equipped with newer CAN bus systems may require specialized diagnostic tools to accurately pinpoint DRL faults. If you're unsure, seek professional service.
Summary
The DRL light on a Honda Civic primarily signals the status of the daytime running lights: they are normally on during the day, with the indicator reflecting active operation. A warning or abnormal behavior points to potential issues with bulbs, fuses, wiring, or the DRL module, which should be inspected promptly to ensure daytime visibility and regulatory compliance.