I would really hope that the equivalent of a dead battery won't lose your remap! Methinks it's a bit more permanent than that though.
The reset isn't strictly necessary, the car will smooth itself out over time and the engine light will eventually go out if it was lit. Even disconnecting the battery won't remove the fault code completely though, the only way to get rid of those is vagcom fault code reset.
The reset isn't strictly necessary, the car will smooth itself out over time and the engine light will eventually go out if it was lit. Even disconnecting the battery won't remove the fault code completely though, the only way to get rid of those is vagcom fault code reset.