2021 CX-5 GT Multiple Malfunction Errors

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I am not a car mechanic but by looking at your codes it seems to me that the commonality is the braking system. If I were you, I would start with No. 4 , "fill of brake system uncompleted". I would guess a system bleeding and replacing the fluid would be a start.

 

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Can't use cruise control once these errors come up. Like it won't let me start the cruise control since it uses the front sensing radar.

If you have adaptive cruise control, it needs an operational braking system, it won't work otherwise.

 

[lazygun247]

I wish Mazda M-MDS was as easy to obtain, install and run like Toyota Techstream for advanced troubleshooting issues like this.

With TS for example you can troubleshoot continuity issues easily within the software for less than $100 for cable and software

I don’t know the hardware costs to use with this

Welcome to Mazda Service Info

www.mazdaserviceinfo.com

I think I may have an update. I'm finding that the new car battery is draining to very low states like voltage of 12.1-12.3.

It is possible that I have a bad battery but I wonder if there is a parasitic power draw somewhere.

There is a Mazda service call on it but my VIN has no active recalls on this for some reason

https://static.nhtsa.gov/odi/tsbs/2021/MC-10200942-0001.pdf

 

[Kedis82ZE8]

Do errors show up on every drive with a freshly charged battery?

This is an option I use to locate parasitic power draws

https://www.amazon.com/dp/ (commissions earned)

You can pinpoint fuse or relay that is drawing the power in off state

 

[lazygun247]

Do errors show up on every drive with a freshly charged battery?

This is an option I use to locate parasitic power draws

https://www.amazon.com/dp/ (commissions earned)

You can pinpoint fuse or relay that is drawing the power in off state

I'm not sure where to plug those in. I do not have that available, but I do have a multimeter and advanced OBD tool scanner

When i plugged in the new battery, the error came back initially, but I was error free for about 2-3 drives of 20 minutes each. Then the errors came back.

The errors come back in the middle of drives usually, not at the beginning. No issues with starting the car, even in cold weather (although this year hasn't gotten that cold yet).

Is there such a thing as too much power draw from within the car?
I tested battery again and now it measures at 12.8V which should be okay without any issues. Voltage goes to 13.8 with alternator and ramps up with acceleration so I think the alternator also is working.