EGR System Module (ESM)
WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2005 Mercury Sable, 2005 Mercury Mountaineer, 2005 Mercury Monterey, 2005 Mercury Montego, and 2005 Mercury Mariner. However, it is still accessible from the selected car via links, so may be relevant.
For information on the ESM system, refer to EXHAUST GAS RECIRCULATION (EGR) SYSTEMS , EGR SYSTEM MODULE (ESM) .