Audi A3 E-tron Forum and Electric Vehicle News

Hi there everyone.

First time poster but had my e-tron coming up a year. On my way to work this morning I got a warning message saying something along the lines of, "e-tron system failure. Contact Workshop". No mention of stopping immediately so carried on to work. When I got there, turned car off and back on again so I could get a picture of the error message, but another warning came up. This time, it was, "Drive System: system fault! Safely stop vehicle." Contacted fleet (company car) and an Audi tech was sent out. He has run a diagnostic scan and come up with the following fault:

POAA600 (or P0AA600) Hybrid/EV battery voltage system isolation fault logged in hybrid management control unit.

I've been told that the car is ok to drive in ICE mode and when my courtesy car has been arranged, I've to drop it in to my local Audi workshop. Has anyone else ever had this error? I do have pictures of the dash with the warning lights and second warning message but unable to post as I'm a new member (I think).

Thanks in advance,

G

I had a "system fault" twice. The car would not power up at all. The first time the dealership "reset" the car after consulting with engineers. They didn't fix anything, just reset it. A couple weeks later it happened again. They ended up replacing the battery.

UPDATE: The car has been with Audi almost a month. It's had E-tron specialists up from head office in Milton Keynes to assess & work on it after a period in quarantine. They have replaced the battery pack and associated ancillary parts. Just as well this is under warranty as the price for the battery is £5294 excluding VAT!!! £6353 all in. Now that's not including other parts and any labour so I dread to think what the total cost would be. They are keeping the car for a few more days to run some QA checks but hopefully I'll have it back by next week.

First ever "Drive system: system fault! Safely stop vehicle" message a few hours ago. e-tron coincidentally just booked in for 45,000 service in 3 days from now.
The only preceding event I can think is that I stopped in a driveway after reversing and then uncustomarily open driver door while power on. I mainly drive in Auto mode with 18km range on battery and full tank (640km) petrol.
I did the door lock/unlock x3 reset thing but no change.
Unable to power on
AudiCare (Australia) tell me likely to be an obligate tow-away to Audi Service
Not sure if anyone has similar triggers
Could have happened in trickier circumstances

I just had the same warning message: "Drive System: system fault! Safely stop vehicle". My situation was terrifying - first winter storm of the year, in the dark on Highway 401 (busiest highway in Canada), virtually no shoulder, and my propulsion (electric and ICE) completely shut down, so I was just coasting. I managed to get onto the shoulder, with the passenger side up against a guardrail and driver side wheels on the edge of the pavement, with big trucks whistling by at 100 km/h. After a few minutes, I managed to restart, and limp along the highway to the next exit, at which point the car completely died. Many errors flashed up on screen - brake failure, something with a gear symbol, and finally alternator not charging the battery. I've had it towed to the dealer, waiting to find out how steep the bill will be.

It has 46,000 km, is a 2016, and is 4 years and 11 months old. I have not had any issues until this. Curiously, I received a recall letter last week about an issue with the battery. I am sure it is all related.

2017 etron with 50k miles broken down left me stranded , no warning Drive System: system fault.. Audi want to charge 325 to upgrade the ECU software, If this is the problem why should I pay for something that was not fit for purpose ? anyone else broken down with this problem and did the ecu software upgrade fix it?

Well, this just hit me. 2016 with 40k miles. Went out to the garage to start up and saw this fault. At least I wasn't driving when it shut down. Not looking forward to having it towed to the dealer downtown. I was considering selling it before any electrical problems developed but guess I waited too long.

My 2018 e-tron had a different kind of failure. I was cruising along at about 65mph on the freeway under EV power, with a good charge, and the EV engine just stopped. I press on the pedal and... nothing. I coasted to a stop and the car switched into hybrid mode (or I did it... don't recall) and I was able to get going again. It couldn't switch it back into EV mode even though I had a good charge. After stopping and starting the car later I was able to use EV mode again. Typically, the dealer could find nothing wrong, which isn't surprising since they seem to know little to nothing about how this car works. Has anyone had this problem? It's only happened to me 2 times so far - once on the freeway and once in my driveway.