Wiring problems of the 2011 Volvo S40

A cold, wet, wintery morning; pulled into coffee shop parking lot, parked car, turned engine off, removed key, got out of the car, locked doors, went into the coffee shop. The car was stationary, nothing left on in the car. While waiting for coffee glanced out coffee shop window. Saw that the car was filled with smoke. A panic rush to car found a fire was burning behind dash. Coffee shop had a fire extinguisher; the fire was put out. The car, inoperative, was towed to a dealer. An opinion is that a manufacturing defect involving the car¿s cem (central electronic module) under the dash, on the passenger¿s side, was likely the cause and source of the fire. Dealer report; engine & dash wiring, cem, heater housing, airbag, inner glove box to replace.