My impression was that the only functional difference out of the box was the DVD navigation. But there may be some more subtle changes. Somewhere along the way, they included a cable between the CD changer and the tuner pack that was not present in earlier cars. I know this because I was following instructions for upgrading and earlier model year M5 and they said that I needed to order a cable from BMW. But when I got the system apart and looked for where to put this cable, it was already present in the '03 version I had. There might be some changes re: bluetooth as well.
__________________
2003 M5 - Electric Red/Imola Red Sport
The 03's had some updated radio features-- esp the later ones. Also, all 03's are BlueTooth ready.
- dvd nav
- 4 yr/50k mi full maintainance
- blue-tooth ready
- aux input capable radio (has to do w/ the vintage of the radio)
- sirius sat radio capable-- sort of (with 4/03 later radios, i think)
__________________ 2003 M5 Sterling Grey/Black
V1/StealthOne
Ultimate Pedals Titanium
Factory Brake Duct Upgrade
Supersprint Cat-back race exhaust
UUC Evo 3 SSK/DSSR/Black Tranny Mounts
OEM 9.5" rims x 4 with 275/35ZR18 Pilot Sport PS2, racing metal value stems
OEM MP3-capable CD Changer, Bluetooth (12th Generation), Sirius Satellite radio, DVD Nav 2007.2
One additional thing: from the best that I can tell, all the '03 models came standard with rear airbags just like the '01. In '02 it was a "no-cost option" that had to be selected on the build order for the car, and I have hardly ever seen an '02 with the rear air bags.
__________________ Current stable:
2001 M5 LeMans Blue/Silverstone
Dinan: springs, Konis, rear sway bar, monoball bushings, and exhaust
Ground Control camber plates
Stoptech front brake kit
Brake ducts opened
TC Design brackets
OE 9.5" rear wheels all around & 275/35-18 Dunlop Direzza Sport Z1 Star Spec for street
275/35-18 BFG R1 & Nitto NT-01 R-comps for track
2003 330i ZHP 6MT Imola Red/Black Alcantara
2006 330i sport 6MT Electric Red/Black
2001 Audi S4 6MT Silver/sport Alcantara
1996 Volvo 850R wagon
One additional thing: from the best that I can tell, all the '03 models came standard with rear airbags just like the '01. In '02 it was a "no-cost option" that had to be selected on the build order for the car, and I have hardly ever seen an '02 with the rear air bags.
Whoa. That looks like one item that cannot be added...and would be desireable. Bummer.
The other items look like they can all be readily added if wanted.
One additional thing: from the best that I can tell, all the '03 models came standard with rear airbags just like the '01. In '02 it was a "no-cost option" that had to be selected on the build order for the car, and I have hardly ever seen an '02 with the rear air bags.
The UK spec is different, but I thought they were installed but deactivated unless requested to be activated?
In the US delivered cars, the 2001 and 2003 models came with rear bags standard. The 2002 is listed as coming with them standard in the brochure, but in fact they were a no-cost option that needed to be checked on the order. They all come deactivated in just the door bags. The rear head airbags (the main reason I wanted to have the rear bags in my car) come activated from the factory.
__________________ Current stable:
2001 M5 LeMans Blue/Silverstone
Dinan: springs, Konis, rear sway bar, monoball bushings, and exhaust
Ground Control camber plates
Stoptech front brake kit
Brake ducts opened
TC Design brackets
OE 9.5" rear wheels all around & 275/35-18 Dunlop Direzza Sport Z1 Star Spec for street
275/35-18 BFG R1 & Nitto NT-01 R-comps for track
2003 330i ZHP 6MT Imola Red/Black Alcantara
2006 330i sport 6MT Electric Red/Black
2001 Audi S4 6MT Silver/sport Alcantara
1996 Volvo 850R wagon