Opening a Volkswagen with no visible key barrel

Sometimes the key barrel is hidden on a Volkswagen door and if your vehicle battery is flat or the remote isn’t working you’ll need to know how to get in. If you have a Passat, Touareg or Phaeton.
At least once you may have had to open the car door using the key. Either the car has run out of battery, or the remote control battery is no longer working, they will make you use the key to open the door.