They are not supposed to. The DRL function only activates low or high beam lights, depending on the model. Interior lights and taillights remain extinguished in order to increase contrast of brake and turn signals as well as lengthen the life of the bulbs.
Pull the headlight switch out toward you. Fog lights will only engage when headlights (not just daytime running lights) are engaged.
Daytime running lights
behind the oil filter
it's Daytime Running Lights.
daytime running lights
Replacing a daytime running light on a VW Passat is the same as changing a headlight bulb. First prop the hood open and located the headlight housing. Removing the old bulb and replace it.
The 2009 Volkswagen Passat has 16 valves.
The 2007 Volkswagen Passat has 16 valves.
The 2005 Volkswagen Passat has 20 valves.
The 2002 Volkswagen Passat has 20 valves.
The 2006 Volkswagen Passat has 16 valves.
The 2008 Volkswagen Passat has 16 valves.