Check engine light and no cruise control. 2018 Tundra

Driving on the freeway this morning my cruise control all of a sudden shut off and my check engine light came on. tried to engage the CC again and nothing. got to work shut off the engine and restarted the car and still the CEL was on. Anyone else have had this issue before?

 

On a 2018 rig with TSS, start searching for threads with "radar cruise control" or "TSS issues" in the title. Many, many folks have had similar experiences. There was a recall/update a few months ago for a "fix" to the seal on the millimeter wave radar sensor. Have you gotten that in the mail?

 

I remember those, and had update performed but I don’t recall it ever causing CEL..?

 

You may be right. Either way, worth a trip to the dealer to sort it out.

 

So after taking my truck to the dealer they ran a diagnostic on the CEL light and found out it had something to do with the air flow of the engine. Since I have an aftermarket CAI (cold air Intake) they figure or assume it has to be that. They needed more time to run tests but they cleared my CEL for now and said if it happens again to bring it in for a longer diagnostics test on the code they found. Apparently the air flow is super sensitive to the engine and it could be anything from a bug to an over heating wire. But for now code hasn't come back on.