2008 Lexus GX 470 Owners Manual - Page 426

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 a system to record data in a crash or a near car crash event. This is called an Event Data Recorder (EDR). 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 Front passenger's occupant classification l SRS airbag deployment data l SRS airbag system diagnostic data Your Lexus' Electronic Control Unit (ECU) may contain another EDR. There are a variety of driving situations which include activating the vehicle stability control (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 379 5 When trouble arises