Spare Tire And Mismatched Tire Sizes

WARNING: This page is about a different car, the 2018 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

If the spare tire is installed, the AWD system may disable automatically and enter FWD only mode to protect driveline components. If the AWD systems detects 1 tire is 5% larger or smaller than the other tires, it may also disable the AWD system. This condition may be indicated by AWD OFF message in the message center. If there is a Check AWD message in the message center from using the spare tire, this indicator should turn off after reinstalling the repaired or replaced normal road tire and cycling the ignition OFF and ON. It is recommended to reinstall the repaired or replaced road tire as soon as possible. Major dissimilar tire sizes between the front and rear axles could cause the AWD system to stop functioning and default to FWD or damage the AWD system. If this condition occurs, a DTC is set and a Check AWD message is displayed on the message center.