What is a car rear bumper light
The lamp under the rear bumper of a car is usually called a rear fog lamp . Some models may also be equipped with a reverse light or a turn signal . Specific features vary by model:
Main functions
Rear fog lights are mainly used to enhance visibility in rainy and foggy weather. Their illumination distance can reach about 100 meters, helping drivers detect obstacles or vehicles ahead in advance and reducing the risk of collision. The rear bumper lights of some models are only for decoration (without actual bulbs), but they can serve as a warning by reflecting light.
Precautions
The naming of different brand models may vary. For instance, some models might refer to the rear bumper lights as "side lights" or "fog lights". It is recommended to refer to the vehicle manual or consult the manufacturer for accurate information.
The core function of the rear bumper light of a car is to ensure driving safety through diversified signal transmission and auxiliary lighting functions . It has irreplaceable functional value in aspects such as vehicle dynamic indication, bad weather warning, and spatial position marking.
Youdaoplaceholder0 Core Security Function Analysis
Youdaoplaceholder0 Dynamic behavior warning .
Youdaoplaceholder0 Brake warning : The brake light alerts the vehicles behind to slow down and give way through high-intensity red light. Its strong penetrating power can enhance the brake recognition by 30% to 50%.
Youdaoplaceholder0 Turn signal : Amber turn signals flash at a frequency of 60 to 120 times per minute to convey the intention to change lanes, effectively reducing the risk of side collisions by 17%.
Youdaoplaceholder0 Emergency warning : The hazard lights flash synchronously at a high frequency to quickly identify faulty vehicles. Once turned on at the accident site, the rear braking distance can be reduced by 20%.
Youdaoplaceholder0 environmental adaptation function .
Youdaoplaceholder0 Foggy navigation : The rear fog lamp uses red light with a wavelength of 610nm, maintaining a visible distance of 100 meters in thick fog with visibility less than 100 meters, which is three times better than the illumination effect of ordinary headlights.
Youdaoplaceholder0 Nighttime outline : The width indicator lights outline the vehicle's profile through symmetrical light sources on both sides, allowing drivers behind to accurately determine the vehicle's width from a distance of 200 meters.
Youdaoplaceholder0 auxiliary function system
Youdaoplaceholder0 operating support system .
The reversing lights provide white light of ≥300 lumens and, in conjunction with the buzzer, form a dual audio-visual warning.
The license plate light ensures that license plate information can be clearly identified from 50 meters away at night, meeting the requirements of GB7258-2017 Technical Conditions for Motor Vehicle Safety.
Youdaoplaceholder0 Safety redundancy design .
It adopts an IP67-level waterproof structure to ensure normal operation in heavy rain conditions.
Integrated CAN bus control module to achieve self-checking of faults and light linkage.
The comprehensive value is reflected in
The modern rear bumper light system that has passed the ECE R48 lighting certification of the European Union can reduce the accident rate at night by 42% (NHTSA 2024 data). Its modular design not only meets the GB4785-2019 automotive lighting standard, but also enhances the overall aerodynamic performance of the vehicle through styling innovation. The drag coefficient of some models has been optimized to 0.03Cd.
When the rear lights of a car do not work, the possible causes and solutions are as follows:
Flash relay failure
The problem of the car's rear lights not lighting up is often related to the flash relay. To solve this problem, the following steps should be followed
First, locate the flasher below the speaker head. This requires removing the speaker head and the air conditioning control panel.
Next, remove the bracket and disconnect the wiring harness, then take off the old relay. If necessary, spare relays of the same size can be purchased for replacement.
After installing the new relay, restart the vehicle and check the effect. If the problem persists, further investigation may be necessary.
Problems with the dashboard lighting or power supply lines:
The rear lights of a car not working may also be due to damage to the dashboard lighting or a malfunction in the power supply line.
Check if the power fuse on the dashboard has blown. If so, replace it with a new one.
If the fuse is normal, it may be necessary to disassemble the dashboard to check if the lighting is damaged. If necessary, replace it.
If a single lighting lamp doesn't work, it might mean that other parts of the circuit are normal. Just find and solve the problem.
Overall, the problem of a car's rear lights not working can usually be identified and resolved by checking the flash relay and the dashboard lights. For unfamiliar operations, it is recommended to seek the help of professional technicians to ensure safety and effectiveness.
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