Weird buzzer sound with multiple dash lights on

[cmpettem]

Hey so my 4runner runs great haven't had any issues with it but when it gets cold out (past minus 10) there must be a sensor getting frozen or blocked or something because there's a very loud high pitched buzzer that goes off and 4 sensors are lit up. The parking brake, vsc trak, vsc off and the abs light. Also a couple times it felt like the brakes were super stiff. Eventually as the car gets warm it goes off. Any help would be greatly appreciated.

 

[Acidmeld]

Sounds like theres too much water in the brake fluid. Could be freezing in the lines. Have fluid flushed and see if it gets better.

 

[cmpettem]

Got brake fluid flushed. Still comes on. Could it be an ABS sensor setting it off or something?
Anybody deal with something like this?

 

[20034RunnerV84x2]

Sounds like it isn't getting break pressure. Your master cylinder could be shot.

 

[cmpettem]

Great. Any chance you would know price wise what this would cost?
And why does it only come on in the cold?

 

[20034RunnerV84x2]

Got brake fluid flushed. Still comes on. Could it be an ABS sensor setting it off or something?
Anybody deal with something like this?

It'll be expensive, I can tell you that. (If you go through the dealer)

And I'm not sure why it does it in the cold, that's weird. Also could be the break booster.