book.book Page 21 Friday, July 19, 2013 12:53 PM Brakes Regenerative Braking Parking Brake Whenever ModelS is moving and your foot is The parking brake automatically engages off the accelerator, regenerative braking slows whenever you shift Model S into Park, and down ModelS and feeds any surplus energy releases whenever you shift into any other gear. back to the Battery. By anticipating your stops and simply removing your foot from the accelerator to slow down, you can take advantage of regenerative braking to increase driving range. Of course, this is no substitute for regular braking when needed for safety. NOTE: If regenerative braking is aggressively NOTE: The parking brake operates on the rear slowing Model S, such as on a steep descent, wheels only, and is independent of the brake lights turn on to alert other road users foot-operated brake system. that you are slowing down. Use the touchscreen to manually release the The power meter on the instrument panel parking brake (which also shifts Model S into displays real-time feedback on the amount of Neutral): energy being gained by regenerative braking. 1. Touch Controls > E-Brake & Power Off. The amount of energy fed back to the Battery 2. Press the brake pedal, then touch Parking using regenerative braking can depend on the Brake. If Model S was previously in Park, it current state of the Battery and the charge shifts into Neutral. level setting that you are using. If regenerative braking is limited, a dashed yellow line displays The parking brake indicator displays on on the power meter. For example, regenerative the instrument panel whenever you use braking may be limited if the Battery is the touchscreen to manually apply the extremely hot or cold because the surplus parking brake. energy is used to cool or heat the Battery. If an electrical issue occurs with the Regenerative braking is also limited if the parking brake, an amber parking brake Battery is already fully charged. fault message displays at the top center of the touchscreen. To Set the Regenerative Braking Level CAUTION: In the unlikely event that You can use the touchscreen to change the ModelS loses electrical power, you level of regenerative braking: cannot release the parking brake. 1. Touch Controls. 2. Choose from two levels: • Standard - provides the maximum amount of regenerative braking. When you release the accelerator, Model S slows down faster, reducing the need to use the brakes. • Low - limits the amount of regenerative braking. When you release the accelerator, Model S takes longer to slow down and coasts further. NOTE: Regenerative braking resets to Standard each time you start Model S. DRIVING 4.21