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if you mean: "why do hazard lights flash when brakes are on", then the answer is because vehicles are equipped with a hazard light relay that supercedes the brake lights. This way, slow moving vehicles can operate under hazard lighting.
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Hazard lights do not blink?
replace the flasher fuse
Hazard lights blink but your signal lights don't for a 1991 Pontiac sunbird?
you need to change the flasher can for the signal lights
1999 Audi a6 quattro How I fix the problem when the turn sinals don't blink but hazard lights work well?
1999 Audi a6 quattro, How I fix the problem when the turn signals don't blink, but hazard lights work well?
Why do both your turn signals blink at the same time?
When both of the turn signals (indicators) of a car blink simultaneously, it is usually because the hazard lights are turned on.
What is making your 63 impalas rear turn signals blink like hazard lights when the key is turned on?
Bad ground
What does the red switch do on a Porsche 944?
That very well may be for the hazard switch. Try it and see if the lights blink when the button is depressed.
What would cause your turn signal lights and your stereo lights to blink in sequence and why when the car is off and the break is pushed the dash lights come on?
Most likely poor wiring.
Your hazard lights and your blinkers don't blink but the running lights come on you replaced the flasher under the dash is there another flasher if so where is it located on a 1994 Celica GT?
try a new hazard switch. the power runs through this switch, and sounds as if it is burnt. Good luck.
Why do your signal lights nor the hazard lights blink in 1998 mercury mystique?
Try checking & replacing turn signal flasher, which is usually located underdash by your left knee if your sitting in the drivers seat. Good Luck...
Where is the Hazard lights switch on a 1962 Ford Thunderbird?
Doesn't have hazard lights.
What is the hazard fuse?
It is the fuse for the hazard lights or as they are sometimes called, emergency lights.
Why would your 1999 Geo Tracker head lights and dash lights blink?
On a 1999 GEO Tracker, a bad fuse can cause the headlights and dash lights to blink. A bad voltage regulator or alternator can also cause lights to blink and flicker.
