MD Mondeo Titanium - voltage sensitivity issues?

[The Monty]

Question, does the Mondeo suffer from electrical glitches when the voltage of the battery starts to waiver. Assuming original battery (2015), and last few months have noticed the following one off/now and again electrical Gremlins:
Rear door sensors won't unlock or lock the vehicle
Blinker giving odd ticks. Tick tock tick tock ........ticktock tick tock etc
Headlights gave an "Adaptive headlight error
Bluetooth connectivity issues

I recall my G6e Turbo was sensitive to the battery voltage, aircons, temp sensor, tune issues etc. Was wondering if the Mondeo is the same and the battery is due to change.