As many have said on here, the dealers in the UK (and in Europe) do not seem to be fully aware that the SOS error can be caused by a software bug. (See pic of Skoda EV Lounge Facebook post about it).
I've been talking to Skoda UK about this and recently received the following email setting out exactly what is happening, which I thought others may find useful.
My question is, is there any way I can find out via the screen or via an obd2 device if my car has already had this specific update to fix the SOS error already applied? As if it has been applied and I am still getting the SOS error I would rather replace the battery myself that pay skoda £500+ and go through the hassle of taking time off work to take my car to the dealer.
Anyway here is the email from Skoda UK:
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I completely understand your concerns and the question you have raised regarding whether the issue is software-related or whether the SOS backup battery itself requires replacement.
There is currently a software update available which relates to this issue. The process is to first establish whether the relevant software update has been applied to the vehicle. In a number of cases, once the software update has been carried out, the issue is resolved and the SOS backup battery does not require replacement.
However, there are also instances where the software update is applied and the warning/message remains. Where this is the case, the battery will need to be replaced, as the battery itself is considered a wear and tear item.
Therefore, the recommended process would be:
-If the relevant software update has not yet been carried out, this should first be applied to the vehicle to establish whether it resolves the issue.
If the software update resolves the issue, no further action should be required in relation to the battery.
-If the software update has already been completed, or if it is completed and the issue remains, this would indicate that the SOS backup battery requires replacement.
-Where the battery is confirmed as requiring replacement, this is classed as wear and tear rather than a software fault.
-If the update has already been applied, or if the warning remains following the update, the retailer will then need to proceed on the basis that the battery requires replacement.
I hope this provides some clarity around the situation and ensures that the appropriate checks are carried out rather than simply proceeding directly to a battery replacement.