A total of 609 imported Lexus UX 200s were manufactured during the period from December 24, 2018 to May 18, 2020.
Some imported Lexus UX 260h vehicles produced during the period from December 24, 2018 to April 24, 2020, totaling 12364.
Some imported Lexus ES 300h vehicles produced during the period from February 13, 2018 to April 24, 2020, with a total of 60751 vehicles.
Some of the imported Lexus ES 200s produced during the period from July 29, 2019 to April 17, 2020, totaling 39636.
A total of 14136 Lexus ES 260s were manufactured during the period from June 25, 2018 to April 28, 2020.
The vehicles within the scope of this recall may not operate smoothly because the internal components of the engine exhaust gas recirculation valve (“EGR valve”) may be corroded by a higher concentration of chlorine in the fuel. It may cause the engine to run badly, and in extreme cases, the vehicle may stall at low speed, increasing the risk of collision accidents and potential safety risks. Toyota Motor (China) Investment Co., Ltd. will replace the improved EGR valve assembly for vehicles within the scope of the recall free of charge to eliminate safety risks.

As for the function of EGR valve, it is to control the amount of waste gas entering the intake manifold and make a certain amount of waste gas flow into the intake manifold for recirculation. And its principle is also relatively simple, popularly speaking, it is equivalent to a faucet, but the extent of opening or closing is controlled by the engine ECU computer, when the valve is opened, the exhaust gas enters the combustion chamber, when the valve is closed, the exhaust gas does not enter the combustion chamber and is discharged through the exhaust pipe. As the working process of the EGR valve is electronically controlled by ECU, it can accurately control the amount of waste gas entering the cylinder, thus reducing excessive exhaust gas into the engine and affecting the normal operation. In addition, the EGR valve generally starts to work at medium and high speed, and basically does not participate in the work at low speed or idle speed.

Failure phenomenon after EGR valve damage:

The damage of EGR valve can be divided into two categories, which are normally open and normally closed.

If the EGR is in the normally open position, the vehicle will have faults such as unstable idle speed, even flameout, increased fuel consumption, lack of power, etc., while if the EGR is in the normally closed position, the vehicle will have excessive emissions, higher exhaust temperature, shortened water temperature rise period and other fault phenomena. Whether the EGR valve is normally closed or open, the driving instrument will light the engine fault light for early warning, and the associated fault code will be stored in the engine control unit.