What is the rear bumper of a car
The rear bumper of a car is a protective device located at the rear of the vehicle, used to absorb collision energy. It is usually made of metal or composite materials and its main function is to protect the rear of the vehicle from impact and reduce the harm to occupants in an accident.
Specific functions
The rear bumper (also known as the rear anti-collision beam) buffers the impact force when the rear of the vehicle is hit through structural deformation or energy-absorbing materials, reducing the damage to the vehicle body and occupants. The rear bumper of some models also integrates an energy-absorbing box design, further optimizing the energy absorption effect during a collision.
Structural features
Traditional car models are mostly formed by stamping steel plates, while modern cars are mostly made of plastic materials (such as polycarbonate), which not only reduces weight but also takes strength into account. Some high-end models will use lightweight materials such as aluminum alloy to improve fuel economy.
The main functions of the rear bumper of a car include
Absorb impact force
In low-speed collisions, the rear bumper absorbs the impact force through deformation, reducing damage to the vehicle body structure. For instance, the plastic bumper of the new Highlander can automatically rebound in minor collisions, reducing maintenance costs.
Protect pedestrians
Some models are equipped with buffer blocks and energy-absorbing materials at the lower part of the rear bumper to reduce the harm to pedestrians when the vehicle collides with them.
Decoration and aerodynamic optimization
The streamlined design enhances the vehicle's aesthetic appearance while reducing wind resistance and lowering fuel consumption.
Integrated function
Some models integrate practical functions such as the installation position of reversing radar/camera and trailer hook interface on the rear bumper.
The common causes of rear bumper failure in cars and the corresponding suggestions are as follows:
Common causes of faults
Youdaoplaceholder0 External force impact and collision : Rear-end collisions and being scraped by other vehicles or objects while parking can cause damage, cracks or even structural deformation of the bumper.
Youdaoplaceholder0 Material aging : When exposed to sunlight or high-temperature environments for a long time, plastic bumpers are prone to aging and becoming brittle due to ultraviolet rays and high temperatures, developing cracks or even cracking automatically.
Youdaoplaceholder0 Environmental erosion : Rainy or snowy weather or the use of improper cleaning agents when washing a car may cause the internal metal parts to rust, which in turn can lead to surface cracking.
Youdaoplaceholder0 Installation issue : Failure to properly disassemble or install the bumper during maintenance may cause component misalignment and structural damage.
Maintenance suggestions
Youdaoplaceholder0 Minor damage : If there are only surface scratches or small cracks, repair can be chosen; If the repair cost is close to the cost of replacing a new bumper, repair should be given priority.
Youdaoplaceholder0 Severe damage : If there is structural deformation, extensive damage, or if the vehicle safety or performance is affected after repair, it is recommended to replace the bumper with a new one.
Youdaoplaceholder0 Daily protection : Avoid prolonged exposure to direct sunlight, leave sufficient space when parking to prevent scratches, use neutral detergent when washing the car and avoid forceful rinsing.
It is recommended to contact a professional maintenance institution to assess the extent of the damage and formulate a plan to ensure that the vehicle's safety and appearance are not affected after the repair.
The repair method for a damaged rear bumper of a car should be determined based on specific circumstances
Repair or replacement suggestions
If the damage is relatively minor (such as slight cracks or paint peeling), it can be temporarily left unrepaired. It will be dealt with uniformly when multiple damages occur later to reduce costs. If the bumper is cracked or cannot be repaired, it is recommended to replace it with a third-party part (which is cheaper but not an original part), or choose to replace it with an original part (which is more expensive).
Maintenance process
Youdaoplaceholder0 Diagnose the degree of damage : Check for cracks, deformations or internal structural damage.
Youdaoplaceholder0 Disassemble old parts : Remove the fixing screws, clips and other components, and separate the old bumper from the vehicle body.
Youdaoplaceholder0 Installation of new parts : Clean the surface and secure the new bumper to ensure a tight fit with the body components.
Youdaoplaceholder0 test adjustment : Check if the bumper is securely installed and does not interfere with other components.
Youdaoplaceholder0 4S store original parts : the cost is relatively high. It is recommended to contact the official after-sales service first to obtain an accurate quotation.
It is recommended to choose an appropriate plan based on the vehicle model and the extent of the damage. If necessary, consult professional maintenance personnel.
If you want to know more, keep reading the other articles on this site!
Please call us if you need such products.
Zhuo Meng Shanghai Auto Co., Ltd. is committed to selling MG&MAXUS auto parts welcome to buy.
