ABS light came on with Parking brake light

:
'02 Mazda Protege5
Today when I started the car the ABS warning light and the red BRAKE light came on. I drove a block, shut the car off and started it again, and then it was fine. I suspect however, this isn't the last I've seen of this issue.

for some time I've also noticed the cruise control working intermittently, usually only working when it's not raining. like when it works it works fine, when it doesn't it flat out doesn't work at all.

could the two systems be related? the thing that comes to mind is a speed sensor. its is used in both systems. maybe that's what I need to check out first?
 
Check your brake fluid level.

Never use your cruise control in the rain!
 
The red brake light usually means that the fluid is low.

The ABS light will come on automatically if the red light is lit and the parking brake is not engaged.
 
brake fluid is fine. I did the ABS light diagnostic check that i read about in another thread. read the blinking light and got code 13 - right rear wheel sensor. so that narrows it down. it's probably just corroded and needs a good cleaning.
 
Back