The shop has the specific Volvo scanning tool that can communicate with the TCM, they couldn’t find anything

Update. Still at the shop, they said the PNP switch “looks” different, but it still starts up in park and neutral... they said that the TCM is married to the car itself and they have all of the proper equipment to scan it, but there are no codes, it’s perfectly clean... still the blinking arrow on ...

My wife’s car, a 99’ v70xc had a motor replaced (in my garage) 2 years ago, have had no issues until... she tried starting the car in the cold, didn’t start, so I jumped it and let it run. The next morning, she pulled out of the driveway and the “up arrow” on the dash started blinking. The car ...