What should I do if the tail light doesn't light up? Analysis of popular car repair topics on the Internet in 10 days
Recently, "vehicle taillight failure" has become a hot topic among automotive topics across the Internet. This article will combine the search data of the past 10 days to provide you with a detailed analysis of the solution to the problem that the tail light does not light up.
1. Top 5 recent popular car repair topics
| Ranking | topic | Search volume (10,000) | Hot trends |
|---|---|---|---|
| 1 | How to self-check if the taillight does not light up | 58.7 | ↑35% |
| 2 | Electric vehicle charging failure | 42.3 | ↑18% |
| 3 | Abnormal tire pressure alarm | 39.1 | →Smooth |
| 4 | Air conditioner cooling effect is poor | 32.6 | ↑12% |
| 5 | Brake noise treatment | 28.9 | ↓5% |
2. Analysis of common causes of taillights not lighting up
| Fault type | Proportion | Typical symptoms |
|---|---|---|
| Bulb damaged | 67% | The tail light on one side does not light up |
| fuse blown | 18% | The taillights on both sides do not light up at the same time |
| Line failure | 9% | Sometimes on and sometimes off |
| switch problem | 4% | The brake light is off but the width indicator light is normal |
| other reasons | 2% | Multiple abnormalities coexist |
3. Step-by-step troubleshooting guide
1.basic check: First confirm whether all tail lights are off or only some functions are disabled (such as brake lights, reversing lights, etc.).
2.Bulb check: Remove the lampshade and check whether the bulb is black or the filament is broken. You can try replacing the same type of bulb for testing.
3.Fuse check: Consult the vehicle manual to find the location of the fuse corresponding to the taillight and check whether it is blown.
4.Line test: Use a multimeter to measure the continuity of the circuit, paying special attention to the wear of the wiring at the hinge of the trunk.
5.Professional diagnosis: If the above steps cannot solve the problem, it is recommended to use an OBD diagnostic tool to read the fault code.
4. Quick check on common problems of different models
| Vehicle type | Frequently asked questions | solution |
|---|---|---|
| German cars | Line oxidation | Replace waterproof plug |
| Japanese cars | Fuse specifications do not match | Replace the original fuse according to the manual |
| American cars | Poor contact | Clean lamp holder contacts |
| domestic car | The wiring harness is not firmly fixed | Re-bundle the wiring harness |
5. Maintenance cost reference
| Maintenance items | 4S store quotation | Repair shop quotation | DIY cost |
|---|---|---|---|
| Replace light bulb | 80-150 yuan | 30-80 yuan | 10-30 yuan |
| Replace fuse | 50-100 yuan | 20-50 yuan | 5-10 yuan |
| Line maintenance | 200-500 yuan | 150-300 yuan | 50-100 yuan |
6. Safety reminder
1. Tail light failure is illegal, and you will be fined 200 yuan if investigated.
2. Driving at night without taillights on will increase the risk of being rear-ended by about 300%.
3. It is recommended to carry spare light bulbs and fuses with the vehicle, especially before traveling long distances.
7. Popular questions and answers from netizens
Q: Can the LED taillight be replaced separately if it doesn’t light up?
A: Most LED taillights adopt integrated module design and need to be replaced as a whole, resulting in high maintenance costs.
Q: Why does the tail light suddenly not light up after it rains?
A: There is a high probability that water has entered the lamp unit, causing a short circuit. It is necessary to drain the water in time and check the sealing.
Through the above system analysis, I believe you have a comprehensive understanding of tail light failures. It is recommended that car owners regularly check the lighting system to ensure driving safety. If you need further help, you can follow our follow-up car maintenance special content.
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