Battery Heater Blanket: Description
WARNING: This page is about a different car, the 2004 Dodge Intrepid, 2004 Chrysler Intrepid, 2004 Chrysler Concorde, and 2004 Chrysler 300M. However, it is still accessible from the selected car via links, so may be relevant.
A heater blanket (Fig 1 ) is used to improve the battery cold-start ability. This blanket operates on 110 volt AC current and is used with Alaska and Canada cold weather packages.
The heater blanket cannot be adjusted or repaired. If the blanket is faulty or damaged it must be replaced.