How to Deal with the DPF Light in Diesel Vehicles?
2 Answers
The DPF light in diesel vehicles indicates the particulate filter warning light. The specific handling methods are as follows: 1. Automatic Regeneration: When the DPF light is green, no intervention is needed. At this time, the vehicle is generally driving at high speed (above 80km/h). Keep the vehicle in normal driving state, and the DPF indicator light will automatically turn off after the particulate matter is processed. 2. Manual Regeneration: When the DPF light is yellow, you should leave the lane in time. After the vehicle is turned off, press the DPF light control button. At this time, the yellow indicator light will stay on, and the processing time is about 15-30 minutes. After the particulate matter is processed, the indicator light will automatically turn off. 3. Random Regeneration: It can be operated at any time. After the vehicle is parked, press and hold the DPF processing button for 3-5 seconds to start the detection and processing. If the yellow indicator light flashes, it means manual regeneration is required, and you need to press the DPF button again; if the yellow indicator light stays on, wait for 15-30 minutes. When the indicator light turns off, it means the particulate matter processing is completed.
A few days ago, my diesel car also had the DPF light come on, and I was really confused at the time. Later, I asked a mechanic and found out it was a signal that the particulate filter was clogged and needed immediate attention. They suggested I first try driving continuously on the highway for 40 minutes at a speed of 70-80 km/h to raise the engine temperature and automatically clear the carbon buildup. If the light stays on after the highway run, then I’d have to go back to the repair shop for a forced regeneration using professional equipment. After trying it myself, I found it really worked, but if the clog is too severe, it still needs to be removed and cleaned. Remember, never ignore it—last year, my neighbor didn’t deal with it in time, and the DPF got completely blocked, costing thousands to replace. Now, whenever I see this light come on, I immediately schedule a highway run to fix it.
