2007 Lexus IS 250 Owners Manual - Page 349

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 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 l Driver's seat position l SRS airbag deployment data l SRS airbag system diagnostic data If your vehicles is equipped with a vehicle stability control (VSC) system The VSC Electronic Control Unit (ECU) may contain another EDR. In case the VSC or Brake Assist system is activated, or the lateral acceleration is beyond a certain valve, this device may record some or all of the following information: l Behavior of the vehicle l Steering wheel angle 337 5 When trouble arises