I thought it was a 10 mm wrench? The guy in the video says that too. 10 mm = 3/8", sort of. He says to use a long one, I assume cause it provides more leverage and easier to tie back.Having had my 2022 towed twice, there is only one sure fire way to get them in to neutral when it won’t start. Block the rear tires, disconnect the rear wheel electronic emergency brake (both sides), get vise grips or a 5/16” wrench and some zip ties. Crawl under it with the truck ignition on. Take the 5/16” wrench, place it on the flats of the shifter shaft on the driver’s side of the transmission and turn it counter clockwise towards the transmission lines. Then zip tie the wrench to the transmission lines to hold it in place.