So I made another project. Some Nordic versions came with an active grill. The manufacturer talks about reduced consumption, less noise and faster heating of the diesel engine. I bought the part for the price of 100e from Poland. The assembly is simple, you just need to dismammable the front bumper. Connection of 3 pins - +12V, ground and Lin Bus. Next, the function must be coded using AlfObd, AGC-enable.
Features -
With the air conditioning on - the grill is closed
When regenerating the DPF - the grill is open
Water temperature 95 degrees - the grill open
Water temperature 89 degrees - the grill closed
Self-test shortly after starting - the grill closed/open/closed
Radiator fans activated + engine shutdown with delay - grille open