Cabin air vent/exhaust

[Vento]

I recently had the front windshield replaced on my Telluride and immediately noticed a strong whistling noise coming from the front windshield area at highway speeds. The repair shop performed a pressure test where they cranked the cabin fan up and put soap and water around the windshield to spot any leaks which they didn't find.

I feel like this is a flawed test. Going 100km/h creates far more air pressure than a fan would... and I believe the cabin has exhaust vents or holes that allow positive air pressure to escape outside... so all the positive pressure from the fan would vent there first and not through a small hole in the windshield seal.

I'm looking for advice on how to better detect a leak in the windshield, and also wondering if anyone knows where the cabin vent/exhaust ports are?

Thanks

 

[Senator20]

Who replaced the windshield?

 

[Nac]

I recently had the front windshield replaced on my Telluride and immediately noticed a strong whistling noise coming from the front windshield area at highway speeds. The repair shop performed a pressure test where they cranked the cabin fan up and put soap and water around the windshield to spot any leaks which they didn't find.

I feel like this is a flawed test. Going 100km/h creates far more air pressure than a fan would... and I believe the cabin has exhaust vents or holes that allow positive air pressure to escape outside... so all the positive pressure from the fan would vent there first and not through a small hole in the windshield seal.

I'm looking for advice on how to better detect a leak in the windshield, and also wondering if anyone knows where the cabin vent/exhaust ports are?

Thanks

Are you sure its a leak that is causing the whistling?

It's possible that the external trim for the windshield is replaced in a way to cause whistling.

If its a leak you should be able to find it by putting some type of seal around the inside edge of the windshield, (use something that is easily removable and will not stain like painters tape). Test to see if the whistle is gone when entire windshield edge is sealed, If so, remove small sections drive the car and locate the leak. If the whistle is still there when the seal is installed its likely not a leak causing the whistle.

Good luck!