The function of the rear corner lights of a car
The rear corner lights of a car are lamps located in the rear corners of the vehicle. They mainly provide auxiliary lighting and signal prompts when reversing or driving at low speeds to enhance driving safety.
Its core functions include:
Youdaoplaceholder0 Auxiliary lighting : It provides lighting for the side and rear areas of the vehicle when reversing or driving slowly, helping the driver observe the surrounding environment, especially in low-light scenarios.
Youdaoplaceholder0 signal indication : Linked with the turn signal light, it flashes when a vehicle turns or changes lanes, clearly indicating the driving intention of other road users.
Youdaoplaceholder0 Warning function : When reversing, the rear corner lights are turned on to alert vehicles or pedestrians coming from behind to give way, reducing the risk of scratches or collisions.
Youdaoplaceholder0 Improve visibility : In night or low visibility conditions, enhance the visibility of the rear of the vehicle, making it easier for other drivers to accurately determine the vehicle's position and width.
The design of rear corner lights usually follows international standards (such as ECE R23 or SAE J1373) to ensure that their performance meets safety requirements.
The damage of the rear corner lights (usually referring to the rear turn signals or side sign lights) of a car can affect driving safety. The common causes and solutions are as follows.
Youdaoplaceholder0 common causes
Youdaoplaceholder0 Bulb failure : Aging or burning out of bulbs is the most common cause, especially damage to LED beads or breakage of tungsten filaments in halogen bulbs.
Youdaoplaceholder0 circuit problems : These include blown fuses, short circuits, poor contact or relay failures, which may prevent the current from being transmitted normally.
Youdaoplaceholder0 Connector and lamp socket issues : Loose taillight connectors, oxidation or corrosion of the lamp socket can cause poor contact, affecting the lighting operation.
Youdaoplaceholder0 switch or control unit failure : Faults in the lighting control switch, steering switch or on-board computer may interrupt the signal, causing the rear corner lights to fail to light up.
Youdaoplaceholder0 simple check steps
Youdaoplaceholder0 Visually inspect the bulb : turn on the turn signal switch and observe whether the rear corner lights are on. If it doesn't light up, check whether the bulb is black, cracked or the LED beads are out.
Youdaoplaceholder0 Check the fuse : Check if the fuse corresponding to the rear corner lamp in the fuse box has blown. Replace it if necessary.
Youdaoplaceholder0 Check the connector : Open the trunk or taillight cover plate to check if the connector is tight and if there is any damage or looseness in the wiring.
Youdaoplaceholder0 Test the lamp socket : If the bulb and the circuit are normal, check the lamp socket for dirt or erosion, clean it or reconnect it.
Youdaoplaceholder0 repair suggestions
If the bulb is damaged, replace it directly with a bulb of the same model (pay attention to the compatibility of LED bulbs).
If there is a problem with the fuse or the circuit, it is recommended to use a multimeter to test the voltage and resistance. Complex circuit faults require professional maintenance.
If the problem persists after self-repair or involves the control unit, you should contact a professional technician for diagnosis.
A broken corner light (usually indicating the outline light or side light) of a car usually has an impact during the annual inspection. The annual vehicle inspection will check the integrity and functionality of the lighting system. As an important component of vehicle lighting, the corner lights may fail the annual inspection if damaged.
The specific impact depends on the type of corner lamp and the annual inspection standards of the region. Outline lights are used to mark the contusions of vehicles and are crucial in night or low-visibility conditions. In most regions, annual inspections of such key lamps are strict, and damage to them may directly lead to failure in the annual inspection.
As for some auxiliary side lights, the regulations in some regions may be relatively lenient, allowing them to pass. However, the trend is that the requirements for the lighting system during annual inspections are becoming increasingly strict. Even if non-critical lights are damaged, they may still be required to be repaired.
From a safety perspective, a malfunction of the lighting system can increase driving risks, such as reducing vehicle visibility and affecting the judgment of other road users. Therefore, it is recommended to conduct a comprehensive inspection of the lighting, including corner lights, before the annual inspection, and replace the bulbs or repair any wiring issues in a timely manner. If the lamp housing is damaged, the entire component needs to be replaced to ensure compliance with standards.
To avoid delays in the annual inspection, it is best to confirm the local policies in advance and fix potential hazards.
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