Hope you get it sorted soon to your satisfaction.
Reject the car. You will need to do this quickly and in writing.
It all depends on what the warranty terms are.
How much warranty are they giving on the replacement 2nd hand pump.
What did the dealer say when you told them that you were not happy about a 2nd hand pump?
Is that an Audi main dealer? I wouldn't be happy about a 2nd hand pump, when it is covered by a warranty.
If they sold it after 5 months, that would seem to indicate they got-rid-quick.
Take a very clear photo of the inside.
Unbolt the valve on the fuel pump and see if there any metal bits inside.
An intermittent blockage in the fuel system may cause that problem.
I believe these systems can suffer from metal particles in the system.
If the injectors are blocked with sh-t, then it may cause that warning.
Post a vcds scan on here, otherwise everyone will just be guessing.
I would say it is not the ECU, but one or more of the sensors.
Was the old fuel regulator Bosch as well?
Post a vcds scan on here, and it may help others diagnose the issue.
My guess at this stage is some...
The sensors that have been changed, are they aftermarket ones (i.e non-Audi)?
Is that message on the dash?
K--k fit-up are just as bad as the main stealers for milking a problem.
But if a customer is happy with their service then that's fine.
That sounds like a nightmare.
As you say you may have a parasitic drain from the MMI/radio.
As long as the battery is the same type (ie. AGM, etc)...
Are you having issues with the car?
If you're still on the original battery you need to get that changed asap, otherwise you might be chasing wild geese.
I believe these front brake calipers in the photo are FN3 calipers. Perhaps someone can confirm.
Not sure what the FN3 stands for.
Thanks for all the replies, very helpful.
I think if you do this kind of work on a regular basis, then you get a "feel" for how much a torque...
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