2004 Saab 9-3 Owner's Manual - Page 209

Car care Bi-Xenon headlight, main and dipped beam (certain variants only) WARNING Bi-Xenon headlights are high tension. All work on Bi-Xenon headlights, including changing bulbs, must be carried out by dealer personnel. Bi-xenon headlights produce roughly two times as much light as halogen bulbs and have a significantly longer service life. The lamp units consist of a gas discharge lamp containing xenon. When the lights are switched on a very high voltage activates the xenon gas. The lamps soon reach full intensity. Cars with Bi-Xenon headlights have automatic levelling. The levelling system is comprised of two sensors, one on the front suspension and one on the rear suspension, and a control unit by the engine bay fuse box. Headlight alignment is adjusted automatically to the car's load to prevent dazzling drivers in oncoming traffic. If a fault is detected in the system, the following message will be displayed on the SID: Headlight levelling malfunction. Contact Saab dealer. 209 Contact a Saab dealer to have a Bi-Xenon headlight changed