I only mentioned taking to an AA warranty garage is because I have a warranty.
Can you clarify - do you have a generic 'one size fits all' AA warranty (which would just use AA patrols and AA service centres), or an official VW warranty (which
should use VW logod breakdown vans and VW workshops)?
If it is the first, then you would probably just be wasting your own time - as not even AA workshops (often at the rear of Halfrauds stores) don't have proper VW diagnostic equipment - and would probably tell you to take it to a main stealer anyway.
If you have an official VW warranty thingy, then you
should get a better result.
I don't really want to pay for VW (or independent, dk of one around here anyhow) diagnostics if there are no ill signs now. Nor do I want to bother a kindly forum member...
If it did illuminate a warning light on the dash, then it is highly likely to have 'stored' a fault code (DTC) - so even if all apears well at the moment, it would still be worthwhile getting the ECU scanned and logged.
I'm sure if you fluttered your eyelashes at a forum member with VCDS, they would happly scan it for you free of charge!