Just bought a Certified Pre-Owned 05 TL a couple months ago and have had issues with a single click as soon as I press the gas pedal from a stop. Took it to the dealer and they said it's the brakes releasing from the rotor and it's normal...?

After having my car for about a month the dealership called me and said I had to take the car back in to be re-certified and ever since then the car feels like it runs different... Would they have changed anything that would make it feel different or maybe I'm just getting more used to the car.

Also having a slight vibration while accelerating from a stop. I have read on here that other people have had issues with this same thing... Any suggestions?

Gonna take it to the dealership this week hopefully to get tires re-balanced and aligned... again.

Thanks for all your input.