I’m having this exact issue. It’s as if the electric drive is completely disabled. It sporadically works on startup, but usually i have ICE only. On a few occasions when electric drive works, after 30 or so miles at highway speed (I commute 100 miles round trip daily) a high pitched 2-tone alarm sounds from underneath the rear end of the vehicle. It’s barely audible inside the vehicle bit easily heard from outside. Dealer had no clue and can’t even tell me which part in the rear of the vehicle is equipped with such an alarm. Problem started with hybrid drive appearing normal from inside the car, but no power being applied from the electric drive. Dealer replaced components of the electric real axle drive (ERAD) and while now I sometimes get electric drive, mostly the car just behaves as if it’s not a hybrid at all. I also have the issue with constant AWD not available. Seems like a software setting, or else the ERAD fix wasn’t done right. Many trips back to dealer to no avail.
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