Readiness For Inspection/Maintenance (I/M) Testing; Power Steering Fluid - Ford 2007 Five Hundred Owner's Manual

Maintenance and Specifications
driving cycles without these or any other temporary malfunctions
present, the indicator should turn off—A driving cycle consists of a
cold engine startup followed by mixed city/highway driving. No additional
vehicle service is required.
If the indicator remains on, have your vehicle serviced at the first
available opportunity.

Readiness for Inspection/Maintenance (I/M) testing

In some localities, it may be a legal requirement to pass an I/M test of
the on-board diagnostics system. If the indicator is on, refer to the
description in the Warning lights and chimes section of the
Instrument Cluster chapter. Your vehicle may not pass the I/M test with
the indicator on.
If the vehicle's powertrain system or its battery has just been serviced,
the on-board diagnostics system is reset to a "not ready for I/M test"
condition. To ready the on-board diagnostics system for I/M testing, a
minimum of 30 minutes of city and highway driving is necessary as
described below:
• First, at least 10 minutes of driving on an expressway or highway.
• Next, at least 20 minutes driving in stop-and-go, city-type traffic with
at least four idle periods.
Allow the vehicle to sit for at least eight hours without starting the
engine. Then, start the engine and complete the above driving cycle. The
engine must warm up to its normal operating temperature. Once started,
do not turn off the engine until the above driving cycle is complete.

POWER STEERING FLUID

Refer to the scheduled maintenance information for the service
interval schedules. If adding fluid is necessary, use only MERCON ATF.
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2007 Five Hundred (500)
Owners Guide (post-2002-fmt)
USA (fus)