DTC C1299/99 Cancellation of 4WD Control: Description

WARNING: This page is about a different car, the 2008 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

If wheel slip continues, differential control will be disabled when the torque-distribution ratio of the differential clutch exceeds the set value and a malfunction in the output of the wheel speed sensors, etc. occurs.
If a difference in diameter between the front and rear wheels is determined, differential control will be disabled.

DTC DETECTION CONDITION AND TROUBLE AREA

DTC No.	DTC Detection Condition	Trouble Area
C1299/99	When one of the following conditions is met: Control coupling lock is detected 4 more times. Condition that controls coupling calorific value is predefined value or more. Condition that transfer oil temperature is predefined value or more. Vehicle is driven and energy load tire radius difference between front tires and rear tires is more than 3%	Electromagnetic coupling Tire size 4WD control ECU