2021 Audi A6 — dealer cannot reproduce an intermittent warning

This is usually cheaper to test than to guess. A pressure test beats staring at a dry driveway if the 2021 Audi A6 is losing coolant with no puddle. You'll know quickly if you're on the wrong tree. I'd want a dollar figure or a measured spec, not 'should be fine.' Trying not to diagnose from the couch.

I'd want a measurement, not a hunch. Move a coil or plug on the 2021 Audi A6 if it's cylinder-specific and see whether the code follows. You'll know quickly if you're on the wrong tree. That's the whole play. Next check is the cheap one I can do in a driveway.

OP update: scanned the 2021 Audi A6 again and still only have the one pending code, no new lights. I'd rather look cautious in this thread than stuck later.

Log the conditions before you spend. Swap the cheap/easy piece first on the 2021 Audi A6 and see if the fault moves. Save the big job until that test fails. On “dealer cannot reproduce an intermittent warning,” that was the fork that mattered for me. When does it actually happen? If the story changes I'll post the new data.

If it were in my driveway, two 2021 Audi A6s can feel identical and have different causes, so measure before you copy someone else's repair. Save the big job until that test fails. Stop there until you know. Not trying to scare you — just skip the expensive first guess. If that fails I'll eat the diagnostic fee.

Start with the test that can prove you wrong. Two 2021 Audi A6s can feel identical and have different causes, so measure before you copy someone else's repair. Don't erase codes until someone who can help has seen them. Do that first. I've seen both outcomes, which is why I'd test instead of assume. That's my plan before I call anyone.

Log the conditions before you spend. Two 2021 Audi A6s can feel identical and have different causes, so measure before you copy someone else's repair. Don't erase codes until someone who can help has seen them. On “dealer cannot reproduce an intermittent warning,” that was the fork that mattered for me. When does it actually happen? Climate here is different, so treat that as a local data point. Checking again after work.

Ask what changed right before it started. Swap the cheap/easy piece first on the 2021 Audi A6 and see if the fault moves. That's the branch I'd chase this week. No need to make it theatrical. Checking again after work.

If it were in my driveway, if a shop can't duplicate it on the 2021 Audi A6, bring a video plus freeze-frame data, not just a story. You'll know quickly if you're on the wrong tree. Post the numbers (or the code) and people can get more specific. Checking again after work.

I went back under the 2021 Audi A6 and it only happens after a heat soak, not on a cold start. This is me being the wet blanket on purpose.

Start with the test that can prove you wrong. Two 2021 Audi A6s can feel identical and have different causes, so measure before you copy someone else's repair. Save the big job until that test fails. Do that first. If that fails I'll eat the diagnostic fee.

Ask what changed right before it started. Loaded-suspension checks on the 2021 Audi A6 catch play that a wheels-hanging inspection misses. If the cheap test changes it, stop and reassess. No need to make it theatrical. If that fails I'll eat the diagnostic fee.

Checked the easy stuff on the 2021 Audi A6 and found one clue worth chasing before I book a shop. No warning lights, which is why I'm documenting it.

Log the conditions before you spend. Two 2021 Audi A6s can feel identical and have different causes, so measure before you copy someone else's repair. You'll know quickly if you're on the wrong tree. On “dealer cannot reproduce an intermittent warning,” that was the fork that mattered for me. That's the sequence I'd use. Wrote this up on my lunch break.

I wouldn't throw parts yet. Capture voltage while the 2021 Audi A6 is actually failing — after it restarts you've lost the clue. If the cheap test changes it, stop and reassess. Post the numbers (or the code) and people can get more specific. Happens in gear, not in park, for what that's worth.

If it were in my driveway, swap the cheap/easy piece first on the 2021 Audi A6 and see if the fault moves. That's the branch I'd chase this week. Run the total, not the monthly, before you commit. No warning lights, which is why I'm documenting it.

Intermittent stuff lies if you only catch it once. Swap the cheap/easy piece first on the 2021 Audi A6 and see if the fault moves. Don't erase codes until someone who can help has seen them. On “dealer cannot reproduce an intermittent warning,” that was the fork that mattered for me. Time, temperature, and whether it's in gear are the notes that actually help a shop. I'd rather look cautious in this thread than stuck later.

Start with the test that can prove you wrong. Capture voltage while the 2021 Audi A6 is actually failing — after it restarts you've lost the clue. If the cheap test changes it, stop and reassess. Stop there until you know. Worth doing even if the car feels fine right now. Might be overthinking it, but I'd rather overthink than overspend.

OP here — recorded a short video and noted speed, temp, and whether it was in gear. Heat soak after errands is the other window.

Ask what changed right before it started. Two 2021 Audi A6s can feel identical and have different causes, so measure before you copy someone else's repair. You'll know quickly if you're on the wrong tree. Do that first. That's my plan before I call anyone.

Ask what changed right before it started. A pressure test beats staring at a dry driveway if the 2021 Audi A6 is losing coolant with no puddle. Don't erase codes until someone who can help has seen them. Post the numbers (or the code) and people can get more specific. I'm in no rush to be a hero on it.

I wouldn't throw parts yet. Capture voltage while the 2021 Audi A6 is actually failing — after it restarts you've lost the clue. Don't erase codes until someone who can help has seen them. Time, temperature, and whether it's in gear are the notes that actually help a shop. Next check is the cheap one I can do in a driveway.

Ask what changed right before it started. Capture voltage while the 2021 Audi A6 is actually failing — after it restarts you've lost the clue. If the cheap test changes it, stop and reassess. Learned this the expensive way on a previous car. I'd rather pay for diagnosis than a second guess-repair.

I wouldn't throw parts yet. Capture voltage while the 2021 Audi A6 is actually failing — after it restarts you've lost the clue. If the cheap test changes it, stop and reassess. No need to make it theatrical. Worth doing even if the car feels fine right now. Wrote this up on my lunch break.