Hello,

First time post. Recently purchased 2007 4.8i CPO, 20K miles. Have enjoyed the truck so far; however, one nagging thing that has happened on four separate occasions is a "Dynamic Drive failure." This warning usually comes on after I drive over a pothole with my driver's side front tire. After shutting off the car and restarting, the code disappears. I have taken the car to the dealer on two separate occasions. In the first visit they did some reprogramming, then in the most recent visit they replaced a defective relay and power distribution box. I thought the problem was solved, but yesterday after driving over a large pothole the warning came on again.

I have searched this forum and there are some threads that address this issue; however, I didn't detect any consensus on the cause or any fix(es) that have worked. Any ideas? Anyone with a similar story?

Thanks!