While driving in D4 (Drive 4) the green box will that tells you that you are in D4 will turn on and off, sometimes flicker, sometimes it will stay off. And once that happens, the car will run like crap.

Sometimes when you turn the car off, and than turn it back on.. it will run fine.

Any suggestions? Thanks fellas.

 

Jumper the service connector and turn on the key to see if you can get a flash code