2009 Lexus LX 570 Owners Manual - Page 639

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 SRS airbag sensor assembly contains the EDR. In a crash or a near car crash event, this device 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 When trouble arises 5 l Driver's seat position l Front passenger's occupant classification l SRS airbag deployment data l SRS airbag system diagnostic data The information above is intended to be used for the purpose of improving vehicle safety performance. Unlike general data recorders, the EDR does not record sound data such as conversation between passengers. 645