Likely the battery being insufficiently strong to support the A/S. They are smart little things. Get one of the solar battery chargers that plug into the OBD socket.
amazon.co.uk/AA-Essentials-AA1432-Battery-Charger/dp/B084M5ZL5L/ref=sr_1_5 as an example. Provided it is in the Sun of course.
Last edited by Alistair; 22/11/20 06:59 PM.