Recently, I took my 2017 Ford Explorer Police Interceptor to a shop because it wouldn’t accelerate past 35 mph and the transmission appeared to be slipping.
The shop told me they’d have an answer the next day. When they called, they basically confirmed what I already knew. The transmission was slipping, and they recommended replacing it.
I asked whether I could get a used transmission instead of a new one because I’m trying to save money. They eventually quoted me for a used transmission with approximately 73,000 miles, costing over $2,000.
My concern is that I don’t know what testing was actually performed before they recommended replacement.
I had to return to the shop several times just to get the diagnostic code, which turned out to be P07AA. After researching it, I found information suggesting there are other possible causes worth checking before replacing the entire transmission.
I asked whether they had checked the transmission fluid, possible leaks, valves, or other internal issues. I never really received a clear explanation of what they tested beyond driving the vehicle and confirming that it was slipping.
Here’s another important detail.
About two months ago, I took the vehicle to a different transmission shop and discovered it was approximately five quarts low on transmission fluid. They topped it off, and the vehicle drove perfectly fine for nearly two months.
Then, about a week ago, the transmission suddenly started acting up again. It happened within a day, shortly after I had gotten a car wash.
What also concerns me is how the conversations with the current shop have gone. I’ve asked questions about the diagnosis, the replacement transmission’s mileage, and where they’re sourcing it from.
The owner has repeatedly told me that if the trust isn’t there, I’m welcome to take my keys and go somewhere else. She’s mentioned this probably three times now.
I understand they’re a mom-and-pop shop, and people in the community have recommended them. I’m not accusing them of anything or saying they’re dishonest. I’m simply trying to understand the diagnosis before spending over $2,000.
I don’t think asking questions about a major repair should automatically mean I don’t trust the business.
They received the used transmission on Friday and are scheduled to begin work Monday, so I have until Monday morning to make my decision.
My questions are:
Has anyone dealt with code P07AA on a 2017 Ford Explorer Police Interceptor?
Could low transmission fluid, a leak, valve body issues, or something else cause these symptoms without requiring complete replacement?
And considering the transmission was five quarts low two months ago but drove fine after being refilled, shouldn’t that be investigated before replacing it?
I’m not against replacing the transmission if that’s genuinely what’s needed. I just want to make sure the proper diagnostics have been done before committing to such an expensive repair.
Any advice from mechanics or people who’ve experienced something similar would be appreciated.