Possible cause
WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.
- Connector terminal disconnection, poor contact, damage, deformation, corrosion
- Start stop unit power supply voltage or body ground malfunction
- Open circuit in wiring harness between start stop unit and connector C-35
- Connector C-35 malfunction
- Start stop unit malfunction