Today, I picked up my
MY16 XC90 T8 from the dealer for an extended service that mostly involved the hybrid system. My performance data is now consistently appearing in my VOC App on my iPhone.
The resolution involved a VCM reload and a BECM reload. On the BECM side, the write-up stated, "I lost communication to BECM. Tested power and ground and found a high resistance in ground circuit of the BECM, repaired the high resistance and gained communication to system." My understanding from the tech that the high resistance was because the ground was not secured. (I assume that this might be unique to my vehicle - e.g., repairs, but who knows for sure.)
Update: My performance data was fine yesterday, but now it is suspect as you can see from the screen shot below. Having driven 30+ miles over 50 min., I know that the T8 consumed both fuel and hybrid battery power as well as regenerated some hybrid power. I am thinking there continues to be a communication issue from my car to VOC. Also, I do not have any Internet today but I did yesterday. My maps never finish installing OTA yesterday and should have on an hour long trip back home. Looks like a call or visit to the dealer again this coming week.