Please see page 105 in your owners manual.

Residual Heat - The heat stored in the engine is used to heat the passenger compartment while stopped.

Pressing the right side switches on the residual heat utilization when the following conditions are met:

o up to 15 minutes after switching off the engine
o with the engine at operating temperature
o with sufficient battery voltage
o at an outside temperature below 77 degrees F

__________________
2007 4.8i, Space Gray, Dark Burl Walnut Wood, Black Nevada Leather

Packages:
ZCW Cold Weather, ZPP Premium, ZRC Rear Climate, ZSP Sport, ZTP Technology

Options:
217 Active Steering, 322 Comfort Access, 328 Running Boards, 496 Heated Rear Seats, 610 Heads Up Display, 655 Sat Radio, 840 Increased Top Speed to 150 MPH ,2LE 20" Y Spoke Wheels.

Mods:
Stainless Steel Pedal Pads