This isn’t something you can easily check unless he means the vent below the rear seat cushion. The other vent is somewhere on the bottom of the car in front of the driver side rear wheel. Air is pulled in by the fan and exhausted out a tube, just like the exhaust fan for a bathroom. I doubt you will want to get under the car. Unless that tube is completely clogged with mud from a flood, I highly doubt that’s your issue. While the dealer has the seat off to fix your seatbelt, tell them you want the temperature sensor and fan system checked due to this recurring battery temp limit warning.Thanks Lavash. Do you know where is the HV battery vent?