After 2 major filter problems I have decide to build a small device to monitor the DPF (Diesel Particulate filter) status while driving. A small device is plugged in the OBD diagnostics socket and a tiny OBD display is placed in the air vent. Picked an Arduino Nano to get the CAN codes and process the status. A blinking message is displayed as alert every time the REGEN is active. (or REQUESTED). Additionally, several values are also displayed: Engine temperature, Exhaust temperature, Soot and Ash mass, Back-Pressure (between the Turbo and the DPF) and Mileage since last successful regen.
Driving short distances every day, sooner or later, the filter will be clogged. With this monitor it is possible to check the current DPF status and, if needed, make a few highway Kms to allow a complete REGEN.