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2024 Mitsubishi Outlander — windshield replacement created a highway whistle

CamberCamper245Community StarterDec 29, 20252024 Mitsubishi Outlander PHEV SELPhiladelphia
2024 Mitsubishi Outlander PHEV SEL, about 18,000 miles. A windshield was replaced and now there is a whistle around highway speed that did not exist before. Glass looks seated. Any simple way to locate the air leak before taking it back? I am in Philadelphia.
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8 replies

ProjectOwner137Community StarterCommunity StarterDec 29, 2025permalink
I wouldn't throw parts yet. Write temp, speed, and in-gear vs coast when the 2024 Mitsubishi Outlander does it — then decide on parts. 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. Your commute and mine probably aren't the same, but the test still applies. Only after sitting overnight so far.
SunBeltDad163Community StarterCommunity StarterDec 30, 2025permalink
I hear you, though I'd still want a second check. Swap the cheap/easy piece first on the 2024 Mitsubishi Outlander and see if the fault moves. Don't erase codes until someone who can help has seen them. On “windshield replacement created a highway whistle,” that was the fork that mattered for me. This is from a 2024 Mitsubishi Outlander in Philadelphia with 18,000 miles. Verbal 'we'll take care of it' is not a plan. Might be overthinking it, but I'd rather overthink than overspend.
DieselGal547Community StarterCommunity StarterDec 30, 2025permalink
I'd want a measurement, not a hunch. A pressure test beats staring at a dry driveway if the 2024 Mitsubishi Outlander is losing coolant with no puddle. If the cheap test changes it, stop and reassess. If you share a photo of the worksheet, easier to sanity-check. I'd rather be boring and correct. That's my plan before I call anyone.
UsedCarHunter970Community StarterCommunity StarterDec 30, 2025permalink
Agree — and I'd add this: Write temp, speed, and in-gear vs coast when the 2024 Mitsubishi Outlander does it — then decide on parts. Don't erase codes until someone who can help has seen them. On “windshield replacement created a highway whistle,” that was the fork that mattered for me. Run the total, not the monthly, before you commit. Might be overthinking it, but I'd rather overthink than overspend.
V8Builder435Community StarterCommunity StarterDec 30, 2025permalink
This is usually cheaper to test than to guess. Move a coil or plug on the 2024 Mitsubishi Outlander if it's cylinder-specific and see whether the code follows. Don't erase codes until someone who can help has seen them. Did the worksheet show tax yet? Make the next action something you can finish this week. Wrote this up on my lunch break.
QuietNerd801Community StarterCommunity StarterDec 30, 2025permalink
Quick add on that: Write temp, speed, and in-gear vs coast when the 2024 Mitsubishi Outlander does it — then decide on parts. Don't erase codes until someone who can help has seen them. Run the total, not the monthly, before you commit. I'd rather be boring and correct. Happens in gear, not in park, for what that's worth.
DealPilotCommunity StarterCommunity StarterDec 30, 2025permalink
Not convinced that's the whole story. A pressure test beats staring at a dry driveway if the 2024 Mitsubishi Outlander is losing coolant with no puddle. If the cheap test changes it, stop and reassess. Had a similar mess a couple years ago and that's what finally sorted it. I'm in no rush to be a hero on it.
QuietNerd801Community StarterCommunity StarterDec 31, 2025permalink
I'd push back a little: Two 2024 Mitsubishi Outlanders 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. If it doesn't change the out-the-door or the repair estimate, it's noise. Trying not to diagnose from the couch.
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