Do all the taillights of a car need to be replaced if they are broken on the outside
If the exterior of a car's taillights is damaged, it doesn't necessarily mean that all of them need to be replaced. It depends on the extent of the damage and the type of taillights. Youdaoplaceholder0 For minor damage or non-integrated taillights, only the lampshade needs to be replaced or repaired, while for severe damage or integrated taillights, the entire assembly needs to be replaced.
The determining factor for whether needs to be completely replaced is
Whether a car's taillight housing needs to be completely replaced after damage mainly depends on the following two key factors. A comprehensive assessment is required to avoid unnecessary repair costs or safety hazards:
Youdaoplaceholder0 degree of damage :
Minor damage (such as small cracks or scratches) : It can be temporarily repaired with special glass glue, plastic tape or paint, without the need to replace the entire component.
Severe damage (such as extensive fragmentation or structural damage) : Usually, the entire taillight assembly needs to be replaced; otherwise, water vapor may seep in, causing short circuits, shortened bulb lifespan or oxidation faults.
Youdaoplaceholder0 taillight type :
Non-integrated taillights: The lampshade can be removed separately, and only the damaged shell part needs to be replaced, with a cost of approximately 200 yuan.
Integrated taillights: The lampshade and components cannot be separated and must be replaced as a whole; otherwise, the sealing performance and functional integrity cannot be guaranteed.
Feasible solutions for repair and replacement
Based on the above factors, the following treatment methods can be adopted:
Youdaoplaceholder0 Priority repair situations : When the taillights are slightly damaged and not integrated, the owner can use white tape, silicone or special repair agents for temporary repair by themselves. However, it should be noted that this is a short-term solution and replacement is still required in the long term.
Youdaoplaceholder0 situations where replacement is necessary : When the integrated taillights are severely damaged, the entire component needs to be replaced. It is recommended to have the operation done at a 4S store or a professional repair shop to avoid damaging other components due to improper DIY.
Youdaoplaceholder0 However, in either case, failure to handle it promptly may cause circuit failure due to water ingress, increasing the risk of rear-end collisions during night driving. Therefore, it is recommended to assess it as soon as possible.
Youdaoplaceholder0 Professional advice and precautions
To ensure driving safety and the effectiveness of maintenance:
If you are unable to determine the extent of the damage or the type of taillights by yourself, you should go to a 4S store or a professional repair shop for inspection by technicians to avoid misjudgment.
When replacing, products that meet national standards should be selected, and other lighting equipment should be inspected regularly to prevent potential safety hazards.
Temporary repairs (such as tape patching) are only suitable for emergencies and should not be relied upon for a long time; otherwise, the loss of sealing property may aggravate the fault.
The taillights of a car remaining on are usually caused by accidental contact of the switch, malfunction of the brake light switch, short circuit in the circuit or failure of the control module. Youdaoplaceholder0 should be checked immediately to prevent the battery from being discharged . First, check the position of the light switch and the reset status of the brake pedal. If the problem cannot be solved, seek professional maintenance.
Youdaoplaceholder0 Common causes and self-check steps
Youdaoplaceholder0 switch accidental touch or function activation : The light combination switch is accidentally touched to the "side marker light" position, or the "home lighting" function of the vehicle model is not turned off.
Youdaoplaceholder0 brake light switch fault : The internal contacts of the switch stick together, causing the taillights to continuously supply power, which accounts for a relatively high proportion of fault cases.
Youdaoplaceholder0 circuit problems : These include short circuits in bulbs, disconnection in circuits or abnormal fuses, often accompanied by other electrical faults.
Youdaoplaceholder0 control module failure : The BCM module is damp or the software error sends incorrect instructions. Professional equipment is required for diagnosis.
Youdaoplaceholder0 Other factors : The door not being closed tightly, the handbrake not being released, or insufficient brake fluid may also trigger it.
Youdaoplaceholder0 Emergency handling and solutions :
Immediately check if the light switch has been reset and turn off the "Auto Headlights" or "Home Lighting" function.
Repeatedly and gently press the brake pedal to try the reset switch. If it is ineffective, disconnect the negative terminal of the battery for 15 minutes and reset the system.
Unplug the emergency power plug of the taillights or wrap the lamp socket contacts to temporarily cut off the power.
If there is a short circuit in the circuit, a malfunction of the control module or a problem with the braking system, professional repair is required.
Youdaoplaceholder0 preventive measures :
After turning off the engine, make sure the light switch is back in place to avoid accidental touches.
Regularly check the car door sealing and brake fluid level to prevent microswitch failure or insufficient fluid level.
Old vehicles should have their taillight circuits and bulb conditions inspected every two years to reduce the risk of short circuits.
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