I'm surprised at this,
VW diagnostics are normally very good,
there are literally pages and pages of fault code definitions.
That said if it isn't doing it when tested and doesn't exceed the parameters for flagging a code then there will be no a code recorded.
Frustrating for all concerned.
See if the dealer can run a "flight mode function test".
This is where diagnostics are plugged in and stay in to record any running issues.
On mine it's recorded on to an SD card.
But as stated if all parameters are within VW specs it would show the same as the dealer,
Zip.
Might be worth contacting VW UK to see if they are aware of this situation and maybe have a software update for it.
Posted Mar 13, 2015 (9 years ago)