Diesel vehicles are required to be fitted with a Diesel Particulate Filter (DPF) in the exhaust system, to reduce emissions. DPF control software is incorporated into the Engine Control Module (ECM). When you drive, the particles in the exhaust gases collect in the filter. The DPF software monitors the level of trapped particles.

So don't ignore it, hoping the DPF light will simply go away. You need to go for a drive where you can get the car up to temperature and keep the revs up - preferably above 3000rpm - for a good few minutes. For example, take the scenic route to the supermarket, keeping the car in a lower gear (although there's no need to have the revs screaming). From what I've gathered, as long as you use the right DEF and keep your tank filled 50-100% (no more than 75% in winter due to expansion) and you drive at highway speeds for 30 mins per week (for DPF cleaning) then the system should not fail.
If A Customer Asks,“What can I do to reduce the chance of this happening?” When the “Continue Driving“ message is displayed, continue driving safely at a steady speed as close to the posted speed limit as possible, until the message turns off. This can take up to 30 minutes. Drive with cruise control when possible. This should
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.
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how long can you drive with dpf light on