2015 BMW 335i — new pads squeal at parking-lot speeds

Start with the test that can prove you wrong. A pressure test beats staring at a dry driveway if the 2015 BMW 335i is losing coolant with no puddle. Save the big job until that test fails. Any freeze-frame data saved? Parking it somewhere I can hear it better next time.

If it were in my driveway, get a real battery/charging test on the 2015 BMW 335i, not just resting voltage, before blaming a module. That's the branch I'd chase this week. If it doesn't change the out-the-door or the repair estimate, it's noise. I'd sleep better after that step, even if it finds nothing. Might be overthinking it, but I'd rather overthink than overspend.

Ask what changed right before it started. Swap the cheap/easy piece first on the 2015 BMW 335i and see if the fault moves. If the cheap test changes it, stop and reassess. Any freeze-frame data saved? I'm in no rush to be a hero on it.

Intermittent stuff lies if you only catch it once. Move a coil or plug on the 2015 BMW 335i if it's cylinder-specific and see whether the code follows. Save the big job until that test fails. On “new pads squeal at parking-lot speeds,” that was the fork that mattered for me. Learned this the expensive way on a previous car. I'll poke at it this weekend.

I wouldn't throw parts yet. Capture voltage while the 2015 BMW 335i is actually failing — after it restarts you've lost the clue. Don't erase codes until someone who can help has seen them. This is from a 2015 BMW 335i in Orlando. Was this after sitting overnight? If the story changes I'll post the new data.