2010 Cadillac DTS Owner's Manual - Page 36

Power Lumbar The power lumbar controls are located on the outboard side of the front seats. Massaging Lumbar On vehicles with this feature, the switch is located on the outboard side of the front seats behind the lumbar switch. Press the front or rear of the lumbar control to increase or decrease support. Press the top or bottom of the control to raise or lower the support mechanism. Press the switch to turn the massaging lumbar feature on. The ignition must be on for this feature to work. The massage cycle will run for up to 10 minutes. To stop massage, press the massaging lumbar switch again or press the power lumbar switch. 2-4