What is the high-mounted brake light in a car
Youdaoplaceholder0 The high-mounted brake light of a car is a type of brake light installed on the upper part of the rear of the vehicle, usually on or above the center line at the rear end of the vehicle. It is also called the third brake light or high-mounted brake light .
Its main function is to warn the vehicles behind and prevent rear-end collisions. High-mounted brake lights, with their higher position, give a clear and conspicuous light signal when the vehicle brakes, especially at night or in low visibility .
Historical background and regulatory requirements
The design concept of the high-mounted brake light stems from the demand for traffic safety. In the United States, all newly sold cars have been required to have high-mounted brake lights since 1986, and light trucks have been required to have since 1994.
This design can effectively reduce the occurrence of rear-end collisions and improve driving safety.
Types and Constructions
There are various types of high-mounted brake lights, including those that use incandescent lamps, light-emitting diodes (leds), and neon discharge tubes as their light sources. The high-mounted brake light in modern vehicles is based on a string of LED lights, which are driven by a transistor circuit .
Installation location and design purpose
High-mounted brake lights are usually installed at the upper part of the rear of the vehicle, such as on the trunk lid, the rear roof or the rear windshield.
Youdaoplaceholder0 The main function of the high-mounted brake light in a car is to warn the vehicles behind, thereby avoiding traffic accidents . The high-mounted brake light is usually installed on the upper part of the rear of the vehicle, at a higher position, so that the vehicle behind can see the braking movement of the vehicle ahead more easily and react correctly to prevent rear-end collision .
The specific functions of the high-mounted brake light include:
Youdaoplaceholder0 Enhance driving safety : High-mounted brake lights, with their higher position, can emit clear and conspicuous light signals when the vehicle brakes. Especially at night or in low visibility conditions, they can effectively make up for the low position and insufficient brightness of ordinary brake lights, greatly enhancing the vigilance of drivers behind .
Youdaoplaceholder0 Reduce rear-end collisions : High-mounted brake lights make it easier for the vehicle behind to notice the braking movement of the vehicle in front and respond promptly, thereby reducing the occurrence of rear-end collisions. This is especially true for cars and microcars with lower chassis, as their regular rear brake lights are positioned lower and underilluminated, which can easily cause rear-end collisions .
Youdaoplaceholder0 Enhance vehicle appearance : High-mounted brake lights not only have functionality but also enhance the aesthetic appearance of the vehicle to a certain extent. Its unique placement and lighting design add visual impact to the vehicle as a whole, making the vehicle look more stylish and distinctive .
The installation position of the high-mounted brake light is usually above the rear window or the upper part of the rear of the vehicle. Some models may install it below the rear windshield, above the rear door, near the roof rack or inside the rear windshield, etc. Regardless of the specific LOCATION, THE PURPOSE IS TO BE able to alert the vehicle behind to slow down in a more conspicuous way when the vehicle brakes to avoid REar-end collision .
The main causes of high brake light failure in cars include :
Youdaoplaceholder0 Brake bulb failure : The brake bulb may be aged or damaged, causing the high-mounted brake light to fail to work properly. The brake bulb needs to be replaced in TIME .
Youdaoplaceholder0 Line fault : A line problem is also one of the main reasons why the high-mounted brake light is not working. The line connection may be loose, damaged or short-circuited, resulting in the inability of current to be transmitted normally. Check for any broken, worn or damaged lines, especially those that are prone to squeezing and friction .
Youdaoplaceholder0 Loose plug : A loose or disconnected plug can also cause the high brake light not to come on. Check that the plug is securely fastened and reinsert it if necessary .
Youdaoplaceholder0 Brake light switch faulty : The brake light switch may be faulty, causing the brake light to fail to light up properly. Judge whether the SWITCH is WORKING properly by professional detection TOOL, replace brake light switch if necessary .
Youdaoplaceholder0 Circuit fuse failure : The circuit fuse may blow, causing the high brake light to fail to work properly. Check if the line fuse is blown and replace it with a fuse of the same specification if necessary .
Youdaoplaceholder0 Brake pedal not depressed : During normal driving, if the brake pedal is not depressed, the high brake light will not come on naturally. Make sure to operate the brake pedal properly when you need to use it .
Youdaoplaceholder0 High-end car on-board computer module failure : For some high-end models, the on-board computer module may have stored fault codes affecting the normal operation of the high-mounted brake light. Professional repair equipment is required to read and clear fault codes .
Youdaoplaceholder0 Troubleshooting and repair advice :
Youdaoplaceholder0 Check the brake bulb : First, check if the brake bulb is damaged. Replace it with a brake bulb of the same specification if necessary.
Youdaoplaceholder0 Check circuit : Use a test light or multimeter to test the circuit of the brake light to determine if there is an open circuit or poor contact. Repair or replace damaged part of the line .
Youdaoplaceholder0 Check plug and switch : Make sure the plug is securely connected, check if the brake light switch is working properly, replace the switch if necessary .
Youdaoplaceholder0 Check the circuit fuse : Check if the circuit fuse is blown and replace it with a fuse of the same specification if necessary .
Youdaoplaceholder0 Professional repair : If the problem remains unsolved after the above inspection and treatment, it is recommended to go to a professional auto repair shop for a comprehensive inspection and repair .
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