kmar Posted January 11, 2015 Share Posted January 11, 2015 I keep my 2015 RX 350 in the garage and last night I noticed a humming or buzzing noise coming from it. I switched the ignition to accessory position and turned it off and the noise stopped. An internet search turned up that it's the gas evaporation leakage check valve and it's a normal operation of the car. My question, is this some sort of pump that is running and causing battery drain? Quote Link to comment Share on other sites More sharing options...
kmar Posted January 11, 2015 Author Share Posted January 11, 2015 Replies on the Club Lexus forum indicate this is a low current draw and is only on for a few minutes, five hours after the vehicle is turn off. A notation of it is on page 23 of the owners manual as was pointed out to me. Quote Link to comment Share on other sites More sharing options...
Wos Posted October 16, 2019 Share Posted October 16, 2019 Hi I have a 2019 RX350. Yesterday I could not sleep and went to garage to catch a smoke. I noticed a humming sound as if some kind of a motor was running. I tried to get as far under the car as I could and it seemed it was coming from the area of left rear under the car seems around the fuel tank. Did you ever find the solution. I dont know how long it was running but I opened the car door and it went away. Few days ago my wife said that she heard the same thing, and she thought that the door was open, she opened and closed the door and it went away also. Quote Link to comment Share on other sites More sharing options...
Ms. Margaret Posted March 11, 2021 Share Posted March 11, 2021 (edited) My RX350 2010, has a loud motor stuck kind of noise, the mechanic said it was the back wheel bearing. It was replaced. Noise is still loud and there. The mechanic said the front wheel bearing. Waiting for replacement Help. I wonder if the diagnosis is correct. Edited March 11, 2021 by Ms. Margaret 1 Quote Link to comment Share on other sites More sharing options...
Lexus Owners Club Posted March 12, 2021 Share Posted March 12, 2021 23 hours ago, Ms. Margaret said: My RX350 2010, has a loud motor stuck kind of noise, the mechanic said it was the back wheel bearing. It was replaced. Noise is still loud and there. The mechanic said the front wheel bearing. Waiting for replacement Help. I wonder if the diagnosis is correct. Keep us updated Quote Link to comment Share on other sites More sharing options...
Yolanda Riggins Posted January 9, 2022 Share Posted January 9, 2022 (edited) Totally, lies!! No vehicle should ever do this. There needs to be a full investigation ASAP. Edited January 9, 2022 by Yolanda Riggins Quote Link to comment Share on other sites More sharing options...
Chris Mace Posted January 9, 2022 Share Posted January 9, 2022 Should I be concerned...I had front and rear brake pads and rotors done a month ago on my 2015 Rx350 by a reputable mechanic. Now I hear a click noise when I hit my brakes while stopping....is this normal and just the brakes engaging? I had the radio off and happened to hear it. Thank you Quote Link to comment Share on other sites More sharing options...
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