Even if you had your own dealership you probably ought to be sorting the problem rather than the symptom. So, can you give us any more details on the fault, there's some very knowledgeable people on here (not me) keen to help.

If I was in the market for one, I would look for the Rovacom secondhand - they do come up on eBother. I think if you are spending that sort of money you want to be able to get the most out of it. Also, you don't see it mentioned often but the earlier Rovacom is much more robust, the newer...

That's a good point you don't see mentioned much in these discussions. If you live in the UK (at least) there are any number of independents out there who can do the necessary on the diagnostics, and you can get quite a few sessions with them for the cost of even the SV Faulmate. You also...