Hi fellas. I just got a very clean 2015 RX350 with 67K miles. This issue happened twice to me only in low speeds. I turned from a parking lot to a main street and the car wouldn’t accelerate while the traction control light(not the ABS one below it), started flashing. The ABS system also got involved. To my knowledge, it’s all happening because of the traction control activation. The car basically thinks one wheel is slipping. I took it to a Lexus dealership and an independent mechanic and they didn’t find any codes. They also checked the wheels speed sensors. Anyone here with a similar experience? I appreciate it

 

Following video walks through some of the things that trigger trac control light, first things I clean up on a used vehicle are battery connections, replace battery and do a hard reset of car electronics by leaving battery disconnected for an hour or so, after installing battery turn steering wheel lock to lock, check that gas cap is tight. If still having a problem some of the Toyota dealerships have helpful service department for these sort of problems, replacing wheel sensors etc but even gasoline station garage mechanics used to working on old cars can handle this;

 

Not everything wrong is captured and stored in the vehicle ECU.

The way to really debug would be to do live monitoring and testing [could be cost prohibitive].

I would start by making sure these simple items:

1. Maker sure the wheel/tires are all identical.
2. Ask a mechanic to lift the vehicle and do a thorough examination of wheel sensors wiring and connections. Look for non-OEM sensor/wiring/splicing. Keep an eye for any work done [evidence marks, age/deterioration should be all even].
3. Ensure treads are the same and amount of wear is the same.
4. Check and inflate the tires evenly.
5. Eliminate bad weather [ice/snow/wet] triggering ... just to eliminate a potential cause.
6. Make sure the brake fluid has been purged and refilled.
7. Ask the mechanic to ensure the caliper pins are lubed.

Salim