Hella have an urgent follow up regarding the VGS monitor in general.
According to the datasheet the VGS error detection threshold High-level for PVDD_UVFL = 1 (undervoltage warning flag) is set to 1.2 to 2.3V (which is in huge parts even lower than the Low-level threshold).
Can you please check if this information is correct or if the given thresholds apply for an undervoltage fault instead.
If the given information is correct it would essentially mean that in the worst-case we already loose half of the VGS detection for PVDD < 8.35V, and we cannot fulfill the safety concept below this voltage.
In that case would see the urgent need of an alignment meeting.