A forced regen occurs when soot builds up inside the diesel particulate filter (DPF) to the point that the vehicle is no longer operable. When this happens, a driver has to pull over and initiate “When you put the two together, we see companies that can go a year longer before they have any maintenance on a DPF. It’s kind of fun to watch.” Opt for biodiesel. Hyundai Tucson Ultimate new in April 2023. Petrol driven (got rid of first diesel ever bought prior to this because of PDF warnings all the time). 1600cc engine with 3 driving modes. On 19/12/23 warning light to keep driving and regenerate exhaust filter. Didn’t know it had an exhaust filter but NOT impressed. When the aftertreatment system is working effectively and the vehicle has met the necessary conditions, a regeneration occurs while the truck is in transit.. Passive regeneration happens frequently in long-haul trucking because it requires continuous driving where the DPF can hit a temperature above 1,000 degrees Fahrenheit to create the heat levels that turn soot into ash. The DPF is a legal requirement on all diesel vehicles as it reduces the number of harmful pollutants released into the air. Over time the soot builds up in the filter. It is then burnt off automatically by a procedure called regeneration. This kicks in on diesel vehicles at about every 300-400 miles, but only on longer journeys, with speeds of If the DPF light comes on whilst driving continue driving until the light goes out. I have had my 2.0 CDTi SRi for just over 2 years now and have never had the DPF light illuminate whilst driving. It is advisable to drive with the Instantaneous mpg showing so you can monitor when car is doing an auto regen so you can avoid interrupting them i.e I think when you have a red light, you have to get a forced regeneration at a garage. Doesn't your handbook explain what to do, what i'm led to believe is if you have a yellow light you can go for a 20/30 minute drive after the engine is up to normal temperature (ie a Hot engine ) to get a complete regeneration. 4 days ago · 1. Driving on a foggy day | Driver Knowledge Test. Driving in foggy weather. Fog can reduce visibility to a few metres. Fog is worse to drive in if you have your headlights on high beam, so keep them dipped. cvnXzNl.