Can someone please tell me how to use engineering test mode while the vehicle is fully on .............. I can use the engineering mode when the vehicle is on ignition but as soon as I turn the engine on it goes away I want to use it when the vehicle is on because a lot information can be displayed by this mode when the vehicle is on like exact speed , rpms etc etc .

 

armaan, just curious how you are getting the car into the engineering test mode. I have gotten the car into that mode, but it has been hit and miss. I know it is something along the lines of stepping on the brake for 3 seconds, push and hold the START button for 3 seconds, let the car start and it would go into test mode. Been awhile since I have done this.

Just to make sure, we are talking about the X351 cars, correct?