Multiple dash warnings: Stability control not available / emergency brake assist not available / gearbox fault

[Mozambique]

2010 V8, 221k km
The dash warnings came on last week. I turned the car off and restarted it and all fine. Same thing happened tonight.

Getting codes (GAP IID):

U0415-64 invalid data received from ABS control module
U0121-00 Lost communication with ABS control module
P0572-17 & P0573-16 Brake switch A low and high voltage

The car runs fine, stability control switched off though.

Quick search online indicates possible low voltage from battery, or maybe alternator issues.
Does the above sound familiar to anyone?

 

[itsaguything]

The ABS is an integral part of the stability systems.
In the troubleshooting process, eliminating the battery as a culprit is rule #1.
Just because the vehicle can start does not imply the battery is good. It should read 12.6v when the engine is not running.

Once you pass that pinpoint test, then move on to confirming the ABS module..