Yes, there is a relay. With the intermittent wipe/washer etc it is all quite complex. I have a wiring diagram for the 1999 (European) Passat but I expect that your Mexican version is nearly identical. Post a contact email/hotmail address and I will upload the pdf file for you. This bulletin was originally from a Russian site which has sadly disappeared. Regards
The 2012 Volkswagen Passat has 38.3 in. of front head room.
The 2004 Volkswagen Passat has 41.5 in. of front leg room.
The 2001 Volkswagen Passat has 41.5 in. of front leg room.
The 2009 Volkswagen Passat has 55.7 in. of front shoulder room.
The 2009 Volkswagen Passat has 41.4 in. of front leg room.
The 2013 Volkswagen Passat has 38.3 in. of front head room.
The 2002 Volkswagen Passat has 41.5 in. of front leg room.
The 2005 Volkswagen Passat has 55.8 in. of front shoulder room.
The 2006 Volkswagen Passat has 55.7 in. of front shoulder room.
The 2008 Volkswagen Passat has 55.7 in. of front shoulder room.
The 2006 Volkswagen Passat has 41.4 in. of front leg room.
The 2003 Volkswagen Passat has 55.8 in. of front shoulder room.