2006 Lexus IS 350 User Guide - Page 340

5-1. Essential information Event data recorder Your vehicle has computers that monitor and control certain aspects of your vehicle. These computers assist in driving and maintaining optimal vehicle performance. Besides storing data useful for troubleshooting, there is an event data recorder (EDR) that records data in a crash or a near car crash event. In a crash or a near car crash event The EDR may record some or all of the following information. l Engine speed l Whether the brake pedal was applied or not l Vehicle speed l To what extent the accelerator pedal was depressed l Position of the transmission shift lever l Whether the driver and front passenger wore seat belts or not l Driver's seat position l SRS airbag deployment data When trouble arises 5 l SRS airbag system diagnostic data If your vehicles is equipped with a vehicle stability control (VSC) system Your Lexus' Electronic Control Unit (ECU) may contain another EDR. There are a variety of driving situations which include activating the VSC under which the VSC EDR will record certain information. The VSC EDR may record some or all of the following information: l Behavior of the vehicle l Steering wheel angle l Vehicle speed 327