i Just had a similar issue on my Premium AWD. Car was stuck in park, and then when it did move it was making a thumping sound when I drive that increased in frequency with acceleration. Service team determined the rear drive motor failed and needs to be replaced. Have you had any subsequent issues after having the unit replaced?Marlin now has a brand new Primary (Rear) Drive Unit and wiring harness. Ford was really quick at getting such a new and major repair accomplished. Most of the replacement was done in one day. The next day was buttoning up, replacing a couple of one-time use bolts, and calibrating the new PDU. The Field Service Engineer was concerned they might not get finished on Friday when the calibration didn't go smoothly but they managed to solve the issues and got Marlin back to me Friday evening.
Here are some shots the FSE took for me, including proof I got some new electric ponies for Marlin:
"Old" PDU removal
The new PDU
Saturday I put 60 trouble-free miles on Marlin and did a partial charging session at the Columbia, MD EA station. Charging on my account worked, Plug & Charge failed. More on that and the trip to Florida as I pick up the story where we left off in
https://www.macheforum.com/site/threads/my-travels-with-marlin-gb-fe-delivered.3298/
No motor issues at all. Marlin has performed flawlessly since they did the work.
