Did the NRMA fit the correct start/stop battery because the battery is unique to start/stop vehicles and are a little more expensive too.
Is the A light greyed out or flashing?
Do you know if there are any codes in the system, because other issues with the vehicle can inhibit the auto start/stop system from working.
Have a read in the owners manual, there are many reasons as to why the system may stop working?
LZ Start Stop.JPG