Ive had this code pop up a few times and then the vehicle may not restart, the first time this happened the vehicle did indeed not restart and they replaced the rear drive unit because they said coolant leaked through the motor some how, this was replaced under warranty, this same warning has now happened again along with reduced power, so i had it towed in there again and now this is what they are saying , there quote is $1470 for a guess, this dosnt sound fair.any ideas?