The first S-Types are distinguished by a U-shaped centre console and optional touch-screen navigation system in the 2003 and later models. The traditional leaping jaguar hood ornament was optional even though it is approved by the US and EU standards and breaks away in the case of an accident. Subsequent models have the Jaguar logo incorporated within the radiator grille and a more traditional 'looped' styling for the centre console.
Also added on the 2003 model was an electronic parking-brake paddle-switch that replaced the conventional manually-operated lever for the rear brakes. The model featured a revised dash, centre console, and a grille with the Jaguar badge to give the vehicle a more Jaguar-like appearance , and a flip-open key was devised for the ignition.
A minor facelift on the 2004 model year featured redesigned front and rear aprons, a slightly modified grille, remodeled rear light clusters, an aluminium bonnet, and a new 2.7-Liter V6 diesel engine with 207 hp. The windscreen washer jets were incorporated into the windscreen wiper arms. There were no changes made to the cabin interior.
Source: Wikipedia, 2012