Why is my vw Passat emergency key not working?

As the driver of a Volkswagen Passat, You may have found Yourself in a situation where Your emergency key is no longer responding when You try to use it. The primary cause of this issue is nothing more than a dead 3 volt battery. You can replace it for a cost between $2 and $8 on average. If the light on the fob is continuously flashing despite changing the battery, You may need to reset it. You can do this by holding down the lock button on Your key fob, until it resets.