What Causes the Hazard Lights to Keep Flashing?

1 Answers
JonathanLee
07/30/25 8:33am
Detailed reasons for hazard lights continuously flashing are as follows: 1. Control box malfunction. It is necessary to inspect the hazard light relay. Use a multimeter to directly measure the output line of the hazard light relay to check for 12v output. Intermittent output changes indicate normal operation, while no output or a constant 12v output suggests the hazard light relay is damaged and needs replacement. 2. Wiring harness abnormality. 3. Dashboard warning lights. Oil pressure warning light, coolant temperature warning light, tire pressure warning light, battery warning light, electronic stability control system indicator. 4. Tire pressure warning light activation. Determine whether the pressure is too high or too low. Excessive pressure can easily lead to tire blowouts while driving, so the tire pressure should be reduced. The battery indicator displays the working status of the car battery, typically in red or yellow.
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