Spare Tire And Mismatched Tire Sizes

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. It is recommended to reinstall a repaired or replaced road tire as soon as possible. When a mismatched or tire of the wrong size is fitted, an AWD OFF message may appear in the IPC. If this condition occurs, a DTC is set and an AWD OFF message is displayed on the message center. If there is an AWD malfunction service required message in the message center from using a spare or mismatched tire, this indicator should turn off after reinstalling a tire of the same size as the normal road tire, then cycling the ignition OFF and ON.