Ford and the National Highway Traffic Safety Administration have issued a recall for some 83,250 vehicles in the US, for an issue with halfshafts. More specifically a "halfshaft retention circlip" might not have been properly installed on affected vehicles, with the result being halfshafts that may move improperly or disengage completely from the linkshaft while driving. The NHTSA release also notes that the issue may occur "without prior warning" which obviously factors in to the timeliness of getting this checked.

Should the halfshaft disengage, a few troubling things could happen. If it occurs while driving, power from the engine will no longer be transmitted to the wheels. And, if the vehicle is parked without the parking brake applied after disengagement of the circlip, vehicles may roll away even if they're transmissions have been placed in "Park."

Affected vehicles are as follows: Ford Edge and Lincoln MKX crossovers from model years 2012 to 2014; Ford Taurus and Lincoln MKS sedans from model years 2013 to 2014; Ford Flex and Lincoln MKT vehicles from model years 2013 to 2014.

Please check the press release below for more specific information regarding affected vehicles, and to find contact information for Ford if you suspect your vehicle may be part of this recall.
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RECALL Subject : Halfshaft Disengagement/Loss of Drive/Roll Away
Report Receipt Date: JUL 02, 2014
NHTSA Campaign Number: 14V393000
Component(s):
Potential Number of Units Affected: 83,250
All Products Associated with this Recall expand
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4 Associated Documents expand
Manufacturer: Ford Motor Company
SUMMARY:
Ford Motor Company (Ford) is recalling certain model year 2012-2014 Ford Edge and Lincoln MKX vehicles manufactured September 2, 2010, to November 30, 2013; 2013-2014 Ford Taurus and Lincoln MKS vehicles manufactured August 25, 2011, to November 30, 2013; and 2013-2014 Ford Flex and Lincoln MKT vehicles manufactured September 12, 2011, to November 30, 2013. In the affected vehicles, the halfshaft retention circlip may not have been properly installed, and as a result, the halfshaft may move outward and disengage from the linkshaft while driving and without prior warning.
CONSEQUENCE:
If the halfshaft and linkshaft become disengaged while driving, power will no longer be transmitted to the wheels, increasing the risk of a vehicle crash. Additionally, if the parking brake is not applied before exiting the vehicle, the vehicle may roll away despite the transmission being placed in 'Park', increasing the risk of injury to exiting occupants and bystanders.
REMEDY:
Ford will notify owners, and dealers will inspect the vehicles to make sure that the halfshaft is properly retained. If it is not, dealers will replace the linkshaft and also replace the halfshaft if it shows evidence of spline damage, free of charge. The recall is expected to begin by August 29, 2014. Owners may contact Ford customer service at 1-800-392-3673. Ford's number for this recall is 14S10.
NOTES:
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.