2011 Mercury Grand Marquis Owner Guide 1st Printing - Page 285

Crown Victoria Severe Duty BODY Fire suppression system (if equipped) Your vehicle may be equipped with an optional fire suppression system. The fire suppression system is designed to help reduce the risk of injury in high-speed rear impacts. The fire suppression system deploys chemicals designed to slow the spread of fire or potentially extinguish a fire, thereby providing more time for occupants to escape from a crashed vehicle. The fire suppression system is mounted beneath the vehicle and attached to the frame above and forward of the fuel tank and rear axle. The fire system control module is mounted inside the passenger compartment centered underneath the rear seat cushion. The system is designed to deploy automatically after sensing a high-speed/high-energy rear end impact. There is a covered manual activation switch mounted in a console on the headliner between the visors that can be used by vehicle occupants to manually deploy the system. The fire suppression system can be manually deployed any time the key or engine is turned on by pushing the button underneath the cover. The button can be accessed three ways: 1. Pushing on the cover will release the cover latch, allowing the door to swing open and expose the button; 2. The cover can be pulled open; 3. A firm strike on the cover (about 20 lb-ft [89 N•m] of force) will deploy the system any time the key or engine is turned on. In the event of a manual deployment, nozzles will deploy to near ground level and the underbody of the vehicle will be covered with suppressant fluid. The suppressant contains no hazardous materials (but may cause minor skin or eye irritation) and can be readily cleaned up by flushing the underbody with water (or soap and water). Manual deployment should have no adverse affect on vehicle handling; however, caution should be exercised in moving the vehicle as ground clearance will be compromised by the deployed nozzles. Because of reduced ground clearance, the vehicle should not be driven through an automatic car wash with nozzles in the deployed condition. 285 2011 Crown Victoria (cro) Owners Guide, 1st Printing USA (fus)