🟩 Electronics | Lesson 13 11 | Lights
Summary:
Your car has various types of lights, each serving a specific purpose for visibility and safety. These include Daytime Running Lights (DRLs), low beams, high beams, fog lights, turn indicators, hazard lights, tail lights, brake lights, reverse lights, and license plate lights. Each of these functions differently based on driving conditions (like fog or night driving). If you leave lights on for too long, especially interior lights, they can drain the battery.
When it comes to maintenance, car lights use different technologies: halogen (common in older cars), xenon (in cars about 10 years old), LED (modern cars), and laser lights (luxury vehicles). Halogen bulbs are the easiest and cheapest to replace, while laser lights are the most expensive.
Mentioned Terms:
Daytime Running Lights (DRLs): Lights that automatically turn on when the car is started to improve daytime visibility.
Low Beams: Headlights used for normal driving at night or in low visibility conditions.
High Beams: Brighter headlights for dark, isolated areas, but should be turned off when approaching other vehicles.
Fog Lights: Lights mounted lower to the ground, used to illuminate the road in foggy conditions.
Indicators (Turn Signals): Lights that blink to signal a change in direction.
Hazard Lights: Both front and rear lights blinking simultaneously to warn of danger.
Tail Lights: Lights at the back of the car that indicate the vehicle's presence.
Brake Lights: Lights that activate when the brakes are pressed to signal stopping.
Reverse Lights: Lights that turn on when the car is in reverse, alerting others of the car’s movement.
Parking Lights (Corner Lights/Position Lights): Low-powered lights used to mark the car's position when parked.
License Plate Lights: Lights illuminating the license plate for visibility.
Halogen Lights: Conventional light bulbs used in older cars for headlights.
Xenon Lights: A more advanced headlight technology producing blueish light, found in cars about 10 years old.
LED Lights: Modern headlights that last longer and are energy-efficient.
Laser Lights: A high-efficiency, bright lighting used in luxury cars, but expensive to replace.
Practical Tips:
Always turn off all lights, especially interior lights, to avoid draining the car battery when parked.
If the car has complex lighting technology like xenon, LED, or laser lights, consult an expert for repairs rather than attempting DIY fixes.
Costs & Replacement Intervals:
Halogen bulbs: $50 per headlight at a mechanic, $30 for DIY; back bulbs as low as $5.
Xenon lights: $100–$300 per light.
LED lights: $200–$300 per headlight.
Laser lights: $1,000–$6,000 per light unit.