What is a rear bend light
Rear turn signals usually refer to a combination of lamps installed at the rear of a vehicle, which includes two functions: rear turn signal and brake light . They are used to indicate the vehicle's direction of travel and warn vehicles behind.
Rear turn signal
Installed at the rear of the vehicle, it indicates the driving direction by flashing. When a vehicle turns or changes lanes, the turn signals in the corresponding direction will flash, using yellow light to warn surrounding vehicles and pedestrians.
Brake light (brake light
It is located at the rear of the vehicle. When the brake pedal is pressed, a red light comes on to warn the vehicles behind to slow down or stop. Some models are also equipped with high-mounted brake lights (located at the upper part of the rear), enhancing visibility at night or in rainy and foggy weather.
The two work together to enhance driving safety and require regular inspection and maintenance.
The main function of the rear turn lamp (cornering auxiliary lighting lamp) is to provide drivers with better lighting effects when turning, help identify vehicles and pedestrians in the cornering area, and reduce the risk of accidents.
Working principle
Curved auxiliary lighting fixtures are typically composed of halogen bulbs and reflectors, capable of illuminating a fan-shaped area with a radius of several meters. The system automatically lights up based on the degree of steering wheel deflection or the flashing signal of the turn signal. Some models are integrated with fog lights in the design.
Precautions
Youdaoplaceholder0 does not need to turn on during normal driving: on straight sections or when not turning, this function should be turned off to avoid disturbing other drivers.
Youdaoplaceholder0 Manual activation condition : If the system does not automatically light up, it needs to be manually activated to ensure the lighting on the curve.
Youdaoplaceholder0 Avoid abuse : Frequent use may cause energy waste or discomfort to drivers of other vehicles.
The malfunction of the rear turn signal (rear turn signal) can be caused by various reasons. The following are common troubleshooting directions:
Bulb problem
Check if the bulb is damaged (such as a broken filament) or has poor contact. If any abnormality is found in the bulb, it needs to be replaced with a bulb of the same specification.
Circuit fault
Youdaoplaceholder0 Circuit issue : Check if the rear turn signal circuit is broken, worn or short-circuited, with a focus on the fuse box in the engine compartment or inside the vehicle (usually located in the engine compartment or driver's cabin). If the fuse blows, a fuse of the same specification needs to be replaced.
Youdaoplaceholder0 Relay abnormality : Open the cover of the flash relay and check whether the coil and contacts are oxidized or the gap is too large. If the relay malfunctions, it needs to be replaced.
Switch problem
Check whether the steering switch is functioning properly. Connect the live wire of the switch to the terminal of the light wire with a screwdriver. If the light is on, it indicates that the switch is faulty and needs to be repaired or replaced.
Other possible reasons
Youdaoplaceholder0 Reverse light switch control : For some models, the rear turn signals are controlled by the reverse light switch. It is necessary to check its working condition.
Youdaoplaceholder0 Body control module failure : If all the above checks are normal, it might be a problem with the on-board computer, and professional diagnosis is required.
If you fail to solve the problem by yourself, it is recommended that you go to a professional repair shop for inspection to avoid potential safety hazards caused by complex circuits.
The failure of the rear turn signal of a car to work may be caused by the following reasons:
Common causes
Youdaoplaceholder0 The bulb is broken
Excessive use or quality issues may cause the filament to melt. You can check the condition of the filament by observing whether the bulb is glowing or by disassembling it. Replace the bulb with a new one if necessary.
Youdaoplaceholder0 the fuse blows
The fuse automatically blows due to abnormal current to protect the circuit. It is necessary to check the fuse corresponding to the turn signal in the fuse box. If it has blown, a fuse of the same specification should be replaced.
Youdaoplaceholder0 line fault
Line breakage, wear or poor contact may cause power outages. It is necessary to inspect the connection points of the rear turn signal wires and repair any broken or corroded parts.
Youdaoplaceholder0 Fault of the steering switch or relay
Frequent operation or component aging may cause oxidation of the switch contacts or prevent the relay contacts from closing. You can try testing the switch function with a screwdriver or checking the status of the relay contacts.
Troubleshooting steps
Youdaoplaceholder0 preliminary inspection
Turn on the turn signal and observe the status of the bulb
Check if the fuse is blown (usually in the engine compartment or driver's cabin)
Youdaoplaceholder0 further investigate
Test whether the connection of the circuit is loose or broken
Replace the spare bulb and test (if any)
Youdaoplaceholder0 professional maintenance
If the above steps are ineffective, it may involve faults in the flasher, reverse light switch or on-board computer, and it needs to be sent for repair and inspection.
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