Brake VSC light on Startup

Hello Gang:

I have 2008 with 250,000 miles on it. When I start the car, especially in the morning, the VSC and brake light are on, and the power breaks don't work. The issue quickly goes away.

I have an occasional P093 Code, otherwise no code, and am aware that the inverter pump can mess with the brakes, but from what I've read this seems to be typical when operating the car for a long period, not right when we start on a cold morning.

I recently replaced the 12V, and wonder if I messed up something when I did so.

Apart from booking a inverter pump replacement, anything else I should be looking at/for? Any ideas on what to check?