Hi, welcome.

If you haven't already done so, first try fully recharging the battery to 100% (not the car's about 70-80%) with an appropriate battery charger maintainer following the instructions to the charger and in the car's 'Owner's Manual'. The battery self-discharges more in hot weather, plus use of air-con drains it, often even long drives aren't good enough to get enough back in ther battery.

On 20/03/2024 at 00:54, Former said:

VW recommend 0.1 of the battery Ah for the charger when charging the battery on the car so say 60 Ah battery has a 6-amp charger at most.  I personally, with back up from battery manufacturers, would use lower that takes longer.  I use a 4-amp "smart" charger maintainer on my wife's 2015 Fabia with a 60 ah (AGM) battery fitted to carry out preventative charges.  I would more happily use a 3 or 2 amp "smart" charger maintainer even if it meant taking more than one charging session to get the battery to fully charged.  Read and follow the instructions in the car's Owner's Manual and for the charger.

HTH.

On 13/07/2026 at 18:44, brad said:

Hi mate,

Got the exact same problem as what you had today, the light came on ant cruising speed with no effect on car and when I came to a stop the automatic cut in/out said it had failed. When I restarted the car it disappeared!

Did you have any resolution to this problem?

Many thanks!

You can try giving it a good charge.
Found with mine that it soon came back on again after charging as it had lost capacity.
Is it the original battery? Mine was about 5 years old i think.
Once i replaced mine the problem went away.
A few years later it did come on again on the way home doing the same journey around early January this year but i havent seen it on again since.
It does seem to reset once the ignition has been power cycled.
Once i realised how the charging circuit works on these cars i changed driving style a bit.
Most of the time its only charging when in gear and you lift right off the accelerator, so coasting in gear.
So i tend to do more of that these days.
It will charge at other times without doing that, depending what the BMS decides.
I monitored battery voltage with a meter plugged into the cigarette lighter socket, made it obvious then how the charging worked (and if it was!)

Edited 19 July19 Jul by Gonzini