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Hazard Warning Relay

Lighting

Controls the flashing of the hazard warning lights.

The hazard warning relay regulates the on-and-off flashing of the vehicle’s hazard lights, ensuring they blink at the correct rate to alert other drivers of a hazard or emergency.

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Typical part cost
$20–$60🔒
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Typical labor cost
$50–$150🔒
🛣️
Typically lasts
80,000–150,000 mi
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Or about
5.0–10.0 years
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DIY difficulty
3/10

⚠️ Owners Often Notice

If the Hazard Warning Relay is starting to fail, these are the signs owners most commonly report before it gets worse:

Hazard lights not blinking
Hazard lights stuck on
Flickering lights
Electrical issues

Related Services

Services commonly performed on or around this part.

Replace Hazard Warning Relay

No standard interval on file

Inspect Hazard Warning Relay

No standard interval on file

Test Hazard Warning Relay

No standard interval on file