Hello buddie! 🤗When I got home. I did stick the battery on charge. Yes. The battery did need charging (It sure sucked up the Amps). I won't know until later today, if it has made any difference. If I get a weekend of peace. Then I'll know the battery was the problem and not the sensor.
As with all modern cars. The battery is in a state of drain with the engine switched off. It seems that Jags are more prone to 'oddities' than others.