lorenzep

2013 GX460. Driving home on the highway, noticed the light came on. The one with the squiggly lines under the truck. Drives fine. Seems like everything is okay except for the light. Tried the button, stopping the car, turning it off, put it in reverse, turned on 4-LO, turned off 4-LO, and locked, unlocked the diff. I don't have a code reader at hand. Is it safe to drive till I get it sorted? Any ideas? Appreciate it.

Peter
Kensington, MD

lorenzep

Finally found something from oldmanb777, embarrassed that I didn't find it sooner. Something about the gas cap loose/tight that sets off the Trac light. She had just filled it up. I opened the cap and put it back on. Light hasn't gone out yet. Ran it around the block with an on/off. Still drives as usual. Maybe it needs a few more cycles.

Peter
Kensington, MD

WRD4chano

take it to autozone and get the code read if the issue persists.

Acrad

I highly recommend this for pulling codes yourself if you don't have Techstream setup.

lorenzep

I found my cheap readers and neither found any fault. I tried the OBD auto doctor using the elm327 and ultragauge. Maybe it's a fault they are not sophisticated enough to read?

Peter
Kensington, MD

Acrad

The software I mentioned above can read the extended Toyota/Lexus codes like Toyota Techstream. It is a paid add-on to OBD Fusion but included with OBD Link as they include all vehicles with the adapter they sell.

Basic OBD wont' traverse all the different ECUs in vehicle.

Statman

Yeah, that message just means the ECU found a fault, but it could be lots of things. When it happened to my car recently it was because when the dealer replaced the fuel pump for the recall, they did not attach the fuel tank vent tube properly and it had fallen off. I had cleared the code, replaced the fuel cap with a new one and the code would return in a few days. Finally took it back to dealer to fix. BTW, I used auto zone to read the codes and it worked fine.