Bad Bulb - check to see if all 4 are flashing from the outside. Bad switch. If bulb, see sources and related links below for automotive bulb information.
this car may have separate flashers for the turn signals and the emergency flashers
when the vehicle has a breakdown
They do not.
Emergency situations where you want to be seen.
There are two relays, one for the emergency flashers, and one for the turn signals. Your turn signal flasher is defective and needs replacing.
in middle of dash large square button with red triangles push it and you will activate your flashers
The Fiero has two flashers from the factory, the signal light flasher and the emergency or four way flasher. These are identical GM style two prong flashers. There are many quality levels and even a few novelty flashers available.
check the flasher itself and the switch
Faulty hazard switch.
you need to replace blinker can in your vehicle. the flashers and blinkers have separate flasher cans which is why your flashers still work but not your blinkers
It is normal for the emergency flashers to work with key on or off. You need to shut the e-flashers off with the e-flasher switch.
To set the emergency flashers on a Harley Ultra Glide, locate the hazard switch, which is usually found on the left handlebar control. Press the switch to activate the emergency flashers, and the turn signals will begin to blink simultaneously. To turn them off, simply press the switch again. Always ensure you’re parked safely before using them.