Hi, I have a 2013 Diesel 308 1.6Hdi The DPF filter warning has "flashed up" twice within a short period. It does not stay on just barely time to read it. My EOLYS fluid has been replaced recently as i got the same DPF. I only do short runs in the car so im wondering if a REGEN is needed? But im wondering how to do this, ive read on the internet but there seems to be some variation on how to do it. Also why does the warning not stay illuminated? Do filters "wear out" and need to be replaced? OK its pushing 13 yrs old but has only done 47k miles. Thoughts and advice greatly appreciated. Cheers Pete