Monitor Description

WARNING: This page is about a different car, the 2017 Lexus RC 350, 2017 Lexus RC 300, 2016 Lexus RC 350, 2016 Lexus RC 300, and 2015 Lexus RC 350. However, it is still accessible from the selected car via links, so may be relevant.

The ECM calculates the amount of heat absorbed by the friction material based on the difference in revolution (clutch slippage) between the turbine and output shaft. The ECM illuminates the MIL and outputs a DTC when the amount of heat absorption exceeds the specified value.

There are two reasons that make the revolution difference.

When the shift solenoid valve SLT remains on, oil pressure goes down and clutch engagement force decreases.
When the shift solenoid valve remains on or off, the gear position commanded by the ECM and the actual gear position are not the same.

NOTE:

If the vehicle is driven under these conditions, the clutches will burn out and the vehicle will no longer be drivable.