Item 11: Solenoid Body O-rings Seals Installation Note
WARNING: This page is about a different car, the 2004 Mercury Mountaineer and 2004 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
Install new O-ring seals on the solenoid body connector. Lubricate the O-ring seals with clean automatic transmission fluid.
Fig 1: Installing New O-Ring Seals On Solenoid Body Connector