AlexR

Thanks Brian - I agree. These parts don’t seem very robust.

Hi Audi A6 C8 50TDI Quat MY2020 bought from new owner here. Pretty sure my MHEV 48V system will be more or less identical to the A8. I had the similar electrical issue in Jan 25 described here, which was originally diagnosed as needing a new Starter Generator. The diagnosis was then amended to needing a new Starter Generator belt tensioner. This fixed the problem. Last week I had Electrical Failure with the yellow and red battery symbol along with the associated messages and sequential shut down of the A/C and MMI. When I tried to start the car, it would hardly turn over. Started it with my NOCO jumpstart which got it going. As the battery was clearly drained - probably as the result of getting no charge - I put the car on charge using the under bonnet red connector and nearby negative lug in accordance with the handbook. The following morning, I drove the car to Audi with as many electrical services switched off. Managed to cover the 15 miles ok but not sure how long it would have lasted for. Having done some research on-line, I found that a failed starter generator replacement is now a free of charge fix. This was great news, as the car is 5 1/2 years old. Picking the car up later this morning. Total time with Audi was 5 days including a weekend. It was a very good outcome, but I am concerned that the new part will be the same as the old part - but hoping it has been modified. Details for the A6 FOC repair are below. Not sure if it applies to the A8, but certainly worth checking. Recall reference R/2020/265 Recall Type Car Recall Date 2020-10-02 Reason for concern MOISTURE MAY ENTER THE BELT DRIVEN STARTER-ALTERNATOR Reason for recall It is possible that moisture may enter the belt-driven starter-alternator. Remedy The starter-alternator must be replaced on the affected vehicles. How to check if the vehicle is recalled Contact the local AUDI dealership or manufacturer. You will not need to pay for anything involving the recall. How the manufacturer will repair The Recalled vehicles will have the fixing checked and corrected as necessary by and official AUDI service. AUDI Reference ID 27H8

Had my dealer retrofit the stowable Audi Tow Bar. Works fine and has also added a ‘Tow Bar’ function to the MMI Reversing Camera that shows an orange line and dot where the tow bar is. i gather the software also modifies the Stability Control function to optimise handling with a caravan under tow. It also adds a caption showing if the tow bar is not safely locked. When towing a different set of green indicator lights shows on the instrument panel when indicating. Wish I had ordered this at build as the retrofit was costly. The parts were around £1200 plus a hefty chunk of labour.

Had this happen on my car at around 3+ years. Mine was the Rear Near Side. Dealer service dept reckoned that Near Side is more vulnerable due to roadside puddles etc.

Welcome Cliff.

Thanks - However, last week had the dreaded StarterNator failure. I gave the Audi Dealer a copy of the Audi document that shows this fault is now covered FOC for cars up to 7 years old. Looking elsewhere on the forum, it appears that some Audi dealers appear not to be aware of this and some people have had to pay the associated very large bill. My car has a 9G8 reference in the build codes which meant it was covered. Text of the document as follows: Recall reference R/2020/265 Recall Type Car Recall Date 2020-10-02 Reason for concern MOISTURE MAY ENTER THE BELT DRIVEN STARTER-ALTERNATOR Reason for recall It is possible that moisture may enter the belt-driven starter-alternator. Remedy The starter-alternator must be replaced on the affected vehicles. How to check if the vehicle is recalled Contact the local AUDI dealership or manufacturer. You will not need to pay for anything involving the recall. How the manufacturer will repair The Recalled vehicles will have the fixing checked and corrected as necessary by and official AUDI service. AUDI Reference ID 27H8

My new car - delivered in Nov 19 had this maddening and rather scary issue. It is called ‘step-off delay’. My Audi dealer found that there was a gearbox software update available. The update was carried out and I finally had the car I thought I had bought. The issue was corrected and the problem has not recurred. For an A6 C8 50TDI the TPI that’s required is 2053287/11 but more importantly, this is an Engine ECU update and not a gearbox update as such, the software update is 4K0907401K Interestingly, many correspondents on the thread said that their dealers were saying there was no available update. However, there certainly is - and it works!

Or temporary GPS Jamming. these are carried out from time to time and notified to flight crew by NOTAM.

Mine has FBSW and does have the Tour Pack.

Can’t remember the code but I had a failed NOx Sensor.

Had a similar problem given DRIVE TRAIN FAULT or something like that. Turned out to be a faulty tensioner pulley that keeps the belt around the starter at or correctly tensioned.

I het this too. Severity varies. When the car was under the manufacturer’s warranty, Audi did do a fix but the rattle eventually came back. Not too bad and probably temperature dependent.

Had my ATF Fluid and filter/pan at a ZF Specialist at 80000miles. I know people say ‘sealed for life’, by the manufacturer ZF recommend every 8 years or 80000 to 100000 miles. decided to stay on top of this as I am retired, bought the car from new and want to keep it long term. They had to undo part of the sub-frame to access the gearbox oil pan.

Hi All Had the same issue 5 days ago. Symptoms as listed in the discussion. Yellow ELEC FAULT and a cascade of associated messages along with load-shedding of multiple items such as A/C, MMI,Start/Stop button greyed out etc. Fortunately, I was on my way home. Tried to start the car and but it hardly turned over. Used my NOCO jump starter and that got in running instantly. Given that the battery was flat, I put it on charge and drove it directly to Audi with as many power using items switched off. Managed to cover the 15 miles or so. Having done research overnight, I read up on the 7 year recall and advised Audi of this. They said they would call me after diagnostics. The call confirmed a failed BSG. I also emailed a copy of the BSG Recall Doc that confirmed the no payment would be due. Audi subsequently confirmed that the repair would be FOC. Collecting the car on Monday. Very relieved not to have to pay the bill! My car has the build code 9G8. I think earlier comments suggesting that the MMI or a light should give a warning that the battery is no longer charging. This was always the case on older cars that had an IGN light so you didn’t get left in the lurch. recall doc below: Recall reference R/2020/265 Recall Type Car Recall Date 2020-10-02 Reason for concern MOISTURE MAY ENTER THE BELT DRIVEN STARTER-ALTERNATOR Reason for recall It is possible that moisture may enter the belt-driven starter-alternator. Remedy The starter-alternator must be replaced on the affected vehicles. How to check if the vehicle is recalled Contact the local AUDI dealership or manufacturer. You will not need to pay for anything involving the recall. How the manufacturer will repair The Recalled vehicles will have the fixing checked and corrected as necessary by and official AUDI service. AUDI Reference ID 27H8 Number of affected AUDI cars 11936

I agree with Wooks. Have mine in ‘Comfort’ most of the time and have no pull away issues. Does the gearbox ‘learn your style’ and optimise accordingly? If so, does it do this separately from ‘scratch’ for each of the modes’ My car is swift off the mark and handles the approach to, and pull away from, junctions and Roundabouts with ease. Fully agree that there appears to be room for further improvement in pick up when accelerating from between 30-50mph upwards. Still a slight delay in my opinion but better than before. Given the name of the update I wonder if it was focused on pulling away from standstill or near standstill.