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Dear fellow members, It's about time I wrote to you all. We've said goodbye to the car and I write to say goodbye to you. I contacted a firm in Walsall specialising in left hand drive vehicles. I got the impression it was one man and a couple of sons. Anyway just as I looked forward to some time working on its kerb appeal, the man rang to announce their imminent visit to the Northwest. "Yes, come to us too", said I, and suddenly it was all over. We were left clutching a few hundred pounds, he left hoping to find a Spaniard needing a bargain in which to get home. Perhaps a prospective buyer was already identified (given the haste). Anyway, we're not expecting complaints: as you all know, an Audi of that vintage will just keep on going. However, I am going. Thanks, best wishes and goodbye to all who submitted comments and or advice, yours sincerely Peter Wight

South West Caves & Caverns Road Trip 🚗🕳️ This road trip takes you through some of the most incredible caves and caverns in South West England, from prehistoric sites to hidden coastal caves. Perfect for history lovers, adventure seekers, and geology enthusiasts! 📍 Clearwell Caves, Gloucestershire 🏞️⛏️ 📍 Cheddar Gorge & Caves, Somerset 🏔️🦴 📍 Wookey Hole Caves, Somerset 🧙‍♀️🕳️ 📍 Beer Quarry Caves, Dorset 🏰🪨 📍 Kent’s Cavern, Torquay 🦴🌍 📍 Carnglaze Caverns, Cornwall 🌊✨ 📍 Merlin’s Cave, Cornwall 🏰🔮 Total Distance: 🚗 Approx. 250 miles

I've just replaced the CCM in my A6 and this is the best video I've found for reprogramming the key fobs if you're fortunate enough to have two of them. Very clear instructions and worked first time for both of my key fobs with no messing around. The reprogramming information starts at 9:00 but the rest of the video may be useful to anybody that needs to repair their key fob. https://youtu.be/RyNpeZUJtsc

My understanding is that they should operate on demand in any mode except efficiency.

Just to close this thread, fuel pressure regulator valve checked out. I found a lad who was willing to take it on, but ended up baffled for a while. He removed injectors, seals were fine. Had them tested all were OK, off a little so got them serviced and calibrated. No metal anywhere, so no indication of failed HPFP. He stripped the top to get to the pump anyway, and removed the solenoid low pressure inlet valve. If this fails car should run in limp mode. Lo and behold it was not actuating, though solenoid resistance was good and impulse present. He had difficulty finding the part number, as Audi will only supply the entire HPFP if this fails. I had the number from the 7zap parts diagram website. Its a Bosch valve and not too expensive. The guys who serviced the injectors had one, so once installed, the car started. Plenty of work, I shudder to think what a main dealer would charge for the HPFP, and the complex work to change it (turbo out, DPF out ). I don't mind the injector servicing, they're all matched up now and in spec. The whole lot cost €840, so I'm happy out. The original consensus of injector failure was incorrect, not helped by the Audi training manual asserting that a failed solenoid valve on the HPFP would not prevent starting, even in limp mode. My man was baffled by this also, but the solenoid seems to have failed in such a way as to have closed the input to the HPFP chamber completely. It's a pity it's so inaccessible also, just a little less clutter and it could be removed and tested early in the game. Not being an official spare part is also strange, perhaps Audi feel that any failure in the pump warrants it's entire replacement, due to the high labour of just getting in there. I hope this helps someone, as the original poster also found it a maze of possible faults. Not helped by no recorded faults due to the purely mechanical nature of the stuck actuator on the solenoid. Thanks to Jason for all his suggestions, though his contributions have mostly been removed except where I quoted him. This is the only critical fault this car has had in my 6 years of ownership, and at 245,000 km, so I'm not complaining.