TCS indicator, TCS off, flashing BSM dash lights appeared at same time.

[Peryan]

It was 8 degrees below Fahrenheit when driving home all these dash lights came on simultaneously. Any ideas. Owners manual suggests taking it to a dealer. It's a 2008 cx-9 AWD Grand Touring with 90k on the clock.

 

[tex2670]

Funky electronics occurrences sometimes is an indication your battery is going.

 

[Rawyzf]

Funky electronics occurrences sometimes is an indication your battery is going.

I agree with this. Weaker battery and cold temps can lead to funky stuff.

 

[table5511]

Take it for a full carwash, undercarriage & all, then if they don't go away, try un-plugging the battery for awhile. Or maybe replace battery per above comments.
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I had that happen once, but it was on startup when we were out to eat in town. I pulled over and turned her off, turned her back on and the lights went away. That was last summer, it hasn't happened since.