Why do the turn signals not work when the hazard lights are functioning normally?

[VanWeston]

Fuse blown. Below is relevant information about automotive fuses: 1. Introduction: Fuse is the conventional term, referred to as a circuit breaker in national standards. The function of a fuse is to protect circuits (wiring) and electrical equipment. They can be classified into blade-type automotive fuses, glass tube automotive fuses, and bolt-type automotive fuses. 2. Precautions: (1) Always replace fuses according to the rated current value specified on the fuse box cover. (2) If the new fuse blows immediately, it indicates there may be a fault in the circuit system, which should be repaired as soon as possible. (3) When no spare fuse is available, you may temporarily replace it with a fuse from other equipment that doesn't affect driving or safety. (4) If a fuse with the same current load cannot be found, one with a lower rated current than the original fuse may be used as a substitute.

[RhettMarie]

When my car had this issue, I was puzzled for quite a while. The hazard lights were working fine, indicating that the bulbs and related wiring were still functional and not burnt out. The turn signals not lighting up was most likely due to a problem with the turn signal switch, as the turn signals are solely controlled by it, whereas the hazard lights use a separate independent switch. Daily driving involves frequent operation of the turn signal lever, which can easily cause the internal contacts to wear out or oxidize, leading to poor contact. I once tried gently shaking the turn signal lever, and sometimes the lights would flicker on, but in the long run, this isn’t reliable. If the problem persists, I suggest not delaying and heading straight to a professional auto repair shop for an inspection. After all, malfunctioning turn signals can compromise lane-changing safety—don’t skimp on small expenses and risk bigger troubles. Paying regular attention to your car’s light conditions and maintaining the switch early can save you a lot of hassle.

[Branden]

As someone who frequently repairs cars, I believe that if the hazard lights are functioning normally, it indicates that the bulbs are not burnt out and the fuses are intact. The most common causes for turn signals not working are issues with the turn signal switch or related relays. That switch is responsible for controlling the turn signals, and over time, the contacts can become sticky or accumulate dust, preventing the signal from passing through. In some older car models, although the flasher relay is shared, a failure in the control circuit can also affect the turn signals. I've dealt with similar cases before—first, use a multimeter to check the voltage and see if the signal is reaching its destination. Often, simply cleaning the switch contacts can resolve the issue. If you're not confident in your DIY skills, it's crucial to seek professional help promptly. Don't underestimate what seems like a minor problem; delaying repairs can lead to worse wiring issues and higher costs down the line.

[McPaisley]

The turn signal not working while the hazard lights function normally is quite peculiar but common. The core issue lies in the control part of the turn signal system, where the switch itself is prone to wear, leading to interrupted current flow. The hazard lights use an independent switch, hence remain unaffected. I tested it myself in the car and found dirty contacts under the turn signal lever. Address this promptly as turn signals are crucial for intersection safety. When encountering this, I first check for any stiffness in the turn signal operation; if unresolved, I pull over and activate the hazard lights to prevent accidents.