When you have a problem with your car and a warning light is activated, the My SEAT DataPlug will read this information and display it on the My SEAT App so you can fully understand the severity of the problem.  It is important that the app is at least running in background.
For safety reasons, this process is executed when the vehicle has stopped (with the engine on or the access key close by) and it can take between 1 to 5 minutes depending on your car's model.