Volkswagen Passat 1995 Official Factory Repair Manual page 3757

Front door assembly
http://ebahn.bentleypublishers.com/vw/servlet/Display?action=Goto&type=repair&id=VW.B4.BD01.57.1
Common key locking, maintaining
Common key locking can be maintained in the vehicle
by repositioning or inserting tumblers -5-.
1; 2; 3; 4 - possible tumbler sizes
Page 23 of 30
57-23
12/7/2004