hi we recently purchased a seat leon and had a new clutch fitted the battery was disconnected and we dont have the code in the paperwork neither does the previous owner ..the make is AURA SERIAL NUM..SEZ2Z6D2870919..worth try if someone can help out there thanks...its a 2005 seat ...????
If there are any manuals or paperwork with the car people tend to scribble these codes where you would least expect to see them.
Otherwise a Seat dealer may be able to help, probably for a fee.