What is a rear flat light
Rear flat light is a type of lighting fixture at the rear of a car, mainly for illumination and warning purposes, and the specific design varies by model
The rear flat light is a type of lamp in the car taillight system, and its design and function vary depending on the model and manufacturer. The following is the specific information about the rear flat light:
Youdaoplaceholder0 Function and design
Youdaoplaceholder0 Basic Functions : The rear flat lights are mainly used for illumination and warning, and are usually combined with other taillights (such as brake lights, turn signals) to form a complete rear lighting system.
Youdaoplaceholder0 Design features : The exterior design of the rear flat lights pays attention to the overall matching with the vehicle model, and their shape and installation position must comply with the vehicle safety technical standards.
Youdaoplaceholder0 Application scenarios
Rear flat lights are usually used as original factory accessories or modified parts and are suitable for specific vehicle series (such as Mazda CX-5, Lavida, etc.).
Some rear flat light products may also have the function of indicating width, but it is necessary to pay attention to the difference between them and dedicated width indicator lights (rear position lights).
The main function of the rear flat light is to provide warning and illumination . The rear level light, also known as the rear position light or outline light, is mainly used to show the position and driving status of a vehicle to vehicles and pedestrians traveling behind at night or in low visibility conditions. By emitting red light, the rear flat lights can be clearly seen at a certain distance, serving as a warning to vehicles coming from behind and helping to avoid rear-end collisions .
In addition, the rear flat light is also used to indicate the presence and general width of the vehicle, making it easier for other vehicles to judge when meeting or overtaking. It is particularly important to turn on the rear flat lights in low visibility weather, such as in the evening, on rainy days or at night, to alert other vehicles to .
In specific usage scenarios, the rear flat lights usually light up simultaneously with the brake lights, further enhancing the warning effect. Brake lights are installed at the rear of a vehicle. When the vehicle brakes, they automatically emit red light, which is significantly brighter than the rear flat lights, to alert vehicles following that the vehicle has taken braking measures .
Rear flat light (flat panel light) malfunctions may be caused by various reasons. The following are common causes and corresponding solutions:
Common causes of faults and solutions
Youdaoplaceholder0 The bulb or LED bead is broken
Youdaoplaceholder0 Manifestation : The lamp is completely off or partially off.
Youdaoplaceholder0 Fix : Replace with bulbs or LED panels of the same model. The operation requires the power to be turned off. Use a suction cup to remove the lampshade and replace it (refer to the disassembly and assembly method).
Related issue: If one side of the taillight does not light up, it might also be due to a burned bulb.
Youdaoplaceholder0 Circuit problem
Youdaoplaceholder0 Fuse blown : Check the vehicle fuse box, find the fuse corresponding to the rear flat light, replace it if it is blown.
Youdaoplaceholder0 Poor contact/short circuit : Check if the plug is loose, oxidized or the circuit is broken. Plug and unplug or repair the circuit. If the rear lights remain on constantly, it might be that the door switch is loosely connected or short-circuited.
Youdaoplaceholder0 Control module failure
Youdaoplaceholder0 Manifestation : Light always on, cannot be turned off, or responds slowly.
Youdaoplaceholder0 solves :
Check the lighting mode Settings (whether they are mistakenly set to the always-on mode);
Reset the door switch (press the reset button on the inside of the door);
If it is ineffective, it might be a fault in the body control unit and professional inspection is required.
Youdaoplaceholder0 Drive power failure
Youdaoplaceholder0 Performance : LED lights flicker, abnormally bright or not at all.
Youdaoplaceholder0 Solution : Replace the LED driver power supply. The operation requires power-off and wiring matching.
Precautions for operation
Youdaoplaceholder0 Safety First : Make sure to disconnect the vehicle power supply before maintenance to avoid short circuit risk.
Youdaoplaceholder0 Accessories matching : When replacing bulbs, light panels or drivers, use original accessories of the same specification.
Youdaoplaceholder0 Professional support : If there is a problem with the circuit board or control unit (such as an error in the lighting control system), it is recommended to have professional maintenance personnel handle it.
Associated fault prompt
If the rear flat light malfunctions and is accompanied by other abnormal lighting conditions (such as brake light or turn signal failure), it may be due to a loose junction box connector or relay failure, and a systematic investigation is required.
If one side of the taillight does not light up after locking the car, first check the bulb and circuit, and then check the body control unit.
When replacing parts by yourself, you can refer to the lamp disassembly and assembly guide in the vehicle manual. If the fault occurs repeatedly, it may be due to the aging of the hidden circuit or the wear and tear of the control module. It is recommended to conduct a comprehensive inspection.
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