Connect scan tool to the 16-pin data link connector (DLC) located underneath the glove compartment. A common issue with many Toyota and Lexus vehicles is that the check engine light will come on at the same time the VSC OFF light turns on. The connector has a removable cover. Transmission is also slipping and cannot seem to shift to high gear. 2. The check engine and VSC light have come on for my 1999 Lexus ES 300. this post is a full detailed guide on How to Reset Check Engine Light Lexus rx300 and other lexes models like Lexus is250, es 350, and even Lexus rx330 plus others. Hi,I have a 99 ES300 the check engine light and trac off light came on simultaneously a few days ago. I had my mechanic run a computer check and the code is PO125 (Insufficient / Time or Temperature for Closed Loop) 1999 ES 300 Lexus check engine light on and Over drive Off 4 Answers. How to Reset Check Engine Light Lexus rx300. Engine doesn't start at all. the reason i tell you this is because you did not mention that the car is running lousy. Have you noticed that some engine or emission-related issues that trigger a yellow check engine light to come on or illuminate on the dashboard of your Lexus car? When retrieving Lexus check engine light codes with an OBD II scan tool, proceed as follows: 1. no complaints of rough idle or missfire or hard starting. Turn the ignition on. Check engine and VSC light 3 Answers. 3. when the car got hot it start shaking like it going to die. 99 lexus: running rough..the check engine light comes..coil my 99 lexus es 300 is occasionally running rough. While driving RED oil light on, engine light on and stops suddenly. SOURCE: 95 Lexus ES 300 check engine light is on and the overdrive off light is flashing chances are you don't have to replace the computer. 2001 Lexus Es300 when I start it like first 30 drive it running good. took to Service center told needs new engine. I pulled code p0330 (knock sensor)I understand the sensors and the labor is expensive,I dont get why when the lights come on I loose overdrive. it is the boot and coil design engine, not the one with plug wire … I have a 2002 es 300 lexus with 157K miles. When I drive on the highway drives at 4,000 RPM instead of the usual 2,000. Every time enging is shifting, it hesitates and the car "shudders" … read more the check engine light comes on, and the codes are misfires. 2001 Lexus Es300 when I drive for like 30 min. the plugs are very new. The check Engine light flashi 4 Answers. Lexus 2002 ES 300 RED Oil Light ON and then Engine Light ON 1 Answer. I have a 99 Lexus ES 300 with "check engine, trac off" light on. when i stop or almost stop it feel like it going to die. If your fuel cap is loose or the O2 sensors on the exhaust are faulty this results in an emission problem and the engine computer unit (ECU) engages the check engine light and disables the VSC (the VSC light comes on to warn you that it has been disabled). But after that then it start shaking. The check engine light is meant to indicate any issues with the malfunctions about the engine , or anywhere that is connected to the engine directly. Toyotas and Lexus cars have some unique feaures. I have a 1999 lexus es300 160,000 miles with check engine and Over drive Off light on.