2023 Honda CRV - Hours after engine has been shut down, I will walk by the car and hear a low volume noise emanating from between the two back wheels. The sound could be coming from a fan. As soon as I press the accessory button, the noise stops. My fear is that it could drain the battery if I don't catch it in time. I've own car for just over a year and this has happened 6 times following no discernable pattern. I've read that this noise could be caused by the vacuum pump inside the fuel evaporation leakage check module (ELCM).

 

I just went out to my garage and heard this exact same thing. Is a 2021 CR-V. Has been shut down for 5 hours. I moved the car outside for fear it was something that may start a fire since I had no idea what it was. Once I turned the vehicle off, the noise did not return. I have video of it and will be calling the Dealership Monday. This isn’t normal.

Did you ever get resolution for this?