2012 Chevrolet Corvette Owner's Manual - Page 243

Driving and Operating 9-21 { WARNING Turning off the vehicle while moving may cause loss of power assist in the brake and steering systems and disable the airbags. While driving, only shut the vehicle off in an emergency. If the vehicle cannot be pulled over, and must be shut off while driving, turn the ignition to ACC/ACCESSORY. When the engine is on or the vehicle is in accessory power mode, it is recommended that a manual transmission be placed in R (Reverse). An automatic transmission must be placed in P (Park). Then press the Acc. button to turn the engine off and place the vehicle in RAP. See Retained Accessory Power (RAP) on page 9‑24 for more information. If an automatic vehicle is not correctly placed in P (Park) a SHIFT TO PARK message will display on the Driver Information Center (DIC). For more information, see Transmission Messages on page 5‑52. When the engine is off, press this button to place the vehicle in accessory mode. ACCESSORY MODE ON will display on the Driver Information Center (DIC). This mode allows you to use things like the radio and the power windows while the engine is off. Use accessory mode if you must have the vehicle in motion while the engine is off, for example, if the vehicle is being pushed or towed. After being in accessory mode for about 10 minutes, the vehicle will automatically enter RAP or OFF, depending on if the doors are opened or closed. Service Only Mode This power mode is available for service and diagnostics, and to verify the proper operation of the malfunction indicator lamp as may be required for emission inspection purposes. With the vehicle off, pressing and holding the bottom of the button for more than five seconds will place the vehicle in Service Only Mode. The instruments and audio systems will operate as they do when the engine is running, but the vehicle will not be able to be driven. The engine will not start in Service Only Mode. Push the button again to turn the vehicle off.