I have a flooded Mazda Cx-5 GT 2018 and I have already changed the EBP module (KN3L-43-7E1B) but I am getting multiple brake errors along with the Parking Brake and Auto Hold is not working at all. What could be the reason? I also get an Instrument Cluster error saying "Lost Communication With Park Brake Control Module" using Autel diagnostic tool

 

What do you mean by 'flooded'?

 

You always take the risk when you purchase ot have happen a vehicle specifically around about 2015 and newer that has water damage "flooded". Unfortunately, it sounds like you have multiple sensors that are damaged and your ECU as well. Your Mazda really should be taken to a hop that can better access your water dame to your electronics'.

 

It was under water by the seat level

 

I checked the input voltage and it was about 4volts! which led me to check the ground 22! I cleaned the connection and the module works perfectly!

 

Sorry to hear that! Didn't your insurance company total the car?

Salt or fresh water?