« Reply #1 on: 23 November 2021, 13:45 »
Hello and welcome Buswell.
It’s flat battery time of year.
My guess is that, a flat battery will throw up a host of error messages.
Do you have breakdown membership with home start?
Sometimes a not quite completely dead battery will have a slightly better charge during the daytime when the temps are a few degrees warmer than early morning/evening. Batteries hate the cold. I do too.
Other than that if you’re not urgently needing the car it would be worth investing in a cheap OBD scanner which will pay for itself time and again over the life of a car.

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‘23 8R, ‘20 8CS, ‘19 135iX, ‘19 TCR, ‘17 Ed40, ‘17 GTD, ‘15 7R, ‘13 GTI PP, ‘11 GTI, ‘09 GTI, ‘98 Ibiza Cupra, ‘05 GTI, ‘06 Polo GTI, ‘04 GT TDI, ‘05 Fabia vRS, ‘02 GTI T, ‘03 Ibiza TDI 130, ‘01 Leon 180, ‘89 mk2 16v, ‘99 Ibiza TDI, ‘96 VR6, ‘98 Ibiza TDI, ‘92 VR6, ‘88 mk2 8v, ‘92 Polo G40, ‘91 mk2 8v, ‘89 mk2 8v, 205 GTI 1.9, ‘83 mk1 GTI, ‘80 Scirocco GTI, plus some others I’ve forgotten