Like at all? No amount of driving is getting it up to temp? Noticed today at -7*C even just using the damn heating sitting in traffic lowers my coolant temp.
Hooked up the VCDS to the car as soon as I got home after driving it on the freeway for 30 minutes, the coolant temperature was 70C (158F). Drove the car for a few miles, as soon as it got some airflow from moving the temperature went down to 65C (149F), and stayed there until I got back home. I've let it idle in the driveway, the temperature soon climbed up to 72C (161F). My assessment is that the thermostat must have been stuck open.
After replacing it, the coolant reaches the normal operating temperature of 90C. It is my understanding that the ECU will not allow a regen to take place unless the coolant reaches 87C
Long story short, my question is: can the DPF be shot even though there are no errors in VCDS, but there is soot in the tailpipe? I tend to believe that the answer is yes. Or perhaps the lack of regens due to the coolant never reaching operating temperature has something to do with the soot on the tail pipe?
I would prefer to not change the DPF unless it really needs to be changed.
Once again, I'm totally new to the CBEA platform, coming from a MK5 Jetta BRM.