There is a small microswitch on the ignition barrel that gives problems and there was a TSB concerning ignition switch on that car also ,
09-19-15 IGNITION KEY BINDING IN IGNITION CYLINDER WHEN TURNING TO START POSITION ONLY - BUILT ON OR BEFORE 8/3/2009
Publication Date: September 22, 2009
FORD: 2008-2010 Focus, Escape
MERCURY: 2008-2010 Mariner
Some 2008-2010 Focus, Escape, and Mariner vehicles built on or before 8/3/2009 may exhibit an ignition key that is binding in the ignition cylinder when attempting to turn to the Start position only. This may be due to a damaged steering column lock module. The brake shift interlock is not affected.
Follow the service procedure to correct the condition.
Verify steering column lock module is the source of concern.
While on level ground, position the steering wheel in the straight ahead position and remove ignition key.
Turn the steering wheel clockwise and counterclockwise to verify the steering column lock restricts rotation. The steering lock should engage before ± 15 degrees of rotation, and will be a hard metal stop in each direction.
Does the steering column lock engage in each direction?
Yes - Do not continue with this procedure. Reference Workshop Manual (WSM), Section 501-14 for additional diagnostics
No - Proceed to step 2.
Replace the steering column lock module per WSM, Section 211-05.
PART NUMBER PART NAME
9L8Z-3511-A Lock Module - Automatic Transmission
9S4Z-3511-A Lock Module - Manual Transmission
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