2024 BMW i4 — coolant is old by age but mileage is low

Tried a second charger / second scan and the story on the 2024 BMW i4 didn't change. I keep a notes app thread for this now.

This is usually cheaper to test than to guess. Loaded-suspension checks on the 2024 BMW i4 catch play that a wheels-hanging inspection misses. Save the big job until that test fails. I'd want that in writing, not as a promise. No warning lights, which is why I'm documenting it.

Log the conditions before you spend. Loaded-suspension checks on the 2024 BMW i4 catch play that a wheels-hanging inspection misses. Save the big job until that test fails. On “coolant is old by age but mileage,” that was the fork that mattered for me. This is from a 2024 BMW i4 in Portland with 13,500 miles. If it doesn't change the out-the-door or the repair estimate, it's noise. I already checked the easy fluid levels.

I wouldn't throw parts yet. Loaded-suspension checks on the 2024 BMW i4 catch play that a wheels-hanging inspection misses. If the cheap test changes it, stop and reassess. Verbal 'we'll take care of it' is not a plan. Might be overthinking it, but I'd rather overthink than overspend.

This is usually cheaper to test than to guess. Get a real battery/charging test on the 2024 BMW i4, not just resting voltage, before blaming a module. That's the branch I'd chase this week. This is from a 2024 BMW i4 in Portland with 13,500 miles. Learned this the expensive way on a previous car. If this is nothing, great. I want that in data.

Start with the test that can prove you wrong. Move a coil or plug on the 2024 BMW i4 if it's cylinder-specific and see whether the code follows. Save the big job until that test fails. A shop burned me once by skipping that step. Worth doing even if the car feels fine right now. If this is nothing, great. I want that in data.

Log the conditions before you spend. Move a coil or plug on the 2024 BMW i4 if it's cylinder-specific and see whether the code follows. You'll know quickly if you're on the wrong tree. On “coolant is old by age but mileage,” that was the fork that mattered for me. A shop burned me once by skipping that step. I'll update if anything new shows up.

If it were in my driveway, get a real battery/charging test on the 2024 BMW i4, not just resting voltage, before blaming a module. Don't erase codes until someone who can help has seen them. That's the sequence I'd use. This is me being the wet blanket on purpose.

Start with the test that can prove you wrong. Loaded-suspension checks on the 2024 BMW i4 catch play that a wheels-hanging inspection misses. Save the big job until that test fails. If it doesn't change the out-the-door or the repair estimate, it's noise. Your commute and mine probably aren't the same, but the test still applies. Only after sitting overnight so far.

Ask what changed right before it started. Write temp, speed, and in-gear vs coast when the 2024 BMW i4 does it — then decide on parts. If the cheap test changes it, stop and reassess. This is from a 2024 BMW i4 in Portland with 13,500 miles. No need to make it theatrical. Doing the boring step first on purpose.

If it were in my driveway, loaded-suspension checks on the 2024 BMW i4 catch play that a wheels-hanging inspection misses. Don't erase codes until someone who can help has seen them. That's the sequence I'd use. That's my plan before I call anyone.

Intermittent stuff lies if you only catch it once. A pressure test beats staring at a dry driveway if the 2024 BMW i4 is losing coolant with no puddle. If the cheap test changes it, stop and reassess. On “coolant is old by age but mileage,” that was the fork that mattered for me. That's the sequence I'd use. Next check is the cheap one I can do in a driveway.

OP update: scanned the 2024 BMW i4 again and still only have the one pending code, no new lights. Only after sitting overnight so far.

I wouldn't throw parts yet. Move a coil or plug on the 2024 BMW i4 if it's cylinder-specific and see whether the code follows. You'll know quickly if you're on the wrong tree. This is from a 2024 BMW i4 in Portland with 13,500 miles. If it doesn't change the out-the-door or the repair estimate, it's noise. If that fails I'll eat the diagnostic fee.

If it were in my driveway, get a real battery/charging test on the 2024 BMW i4, not just resting voltage, before blaming a module. If the cheap test changes it, stop and reassess. A shop burned me once by skipping that step. Not trying to scare you — just skip the expensive first guess. I'd rather look cautious in this thread than stuck later.

I wouldn't throw parts yet. Get a real battery/charging test on the 2024 BMW i4, not just resting voltage, before blaming a module. You'll know quickly if you're on the wrong tree. Had a similar mess a couple years ago and that's what finally sorted it. If it repeats twice more I'll book time.

Intermittent stuff lies if you only catch it once. Capture voltage while the 2024 BMW i4 is actually failing — after it restarts you've lost the clue. Don't erase codes until someone who can help has seen them. On “coolant is old by age but mileage,” that was the fork that mattered for me. This is from a 2024 BMW i4 in Portland with 13,500 miles. That's the sequence I'd use. This is the filter I use when the thread starts repeating itself. Checking again after work.

It did coolant is old by age but mileage twice this week, both times after sitting. No change in mileage feel. I refuse to clear codes until someone else sees them.