happened to me as well.
not sure if it's different for the 2004's, but all i did was press & hold the roll bar rocker switch on the instrument panel all the way down (maybe up? i can't recall) until it clicked (loudly).
that signalled it was re-set.
then i just lowered them back down via the same switch.
entire process was listed in owners manual.
2013 Porsche 911S Cab | 7-spd with a real clutch pedal
2009 Ferrari F430 Scuderia | awful to drive...Just awful.
2003 CLK430 Cab | Tectite Grey | 23k miles | orig owner
1990 BMW 325is | 5spd | Schwarz/Black | bone stock
1990 Chrysler LeBaron GTC Convertible | VNT turbo II engine | 5spd w/real clutch | 1 of 186 produced