Strange electric motor noise when everything is off
12-09-16, 05:53 AM
#1
Rookie
Thread Starter
Strange electric motor noise when everything is off
My wife called me to the garage last night to investigate a noise which sounded like a small electric motor running. It appeared to be coming from the back of my Lexus. The car had been off for several hours and I have no idea what would be making the sound. Does this sound familiar to anyone? Thanks.
12-09-16, 06:12 AM
#2
Pole Position
Nothing to worry about. It has something to do with emissions and is designed to come on after the car sits for 5 hours after driving it. Somewhere in the owners manual it will explain this. My 14 RX does this too.
12-09-16, 08:20 AM
#3
Lexus Test Driver
The humming noise you hear coming from under the vehicle hours after turning Off the engine is the fuel evaporation leak check. Any time up to approximately 5 hours after the engine is turned Off, you may hear a humming sound coming from under the vehicle that could last up to several minutes. This is the sound of a fuel evaporation leakage check and, it does not indicate a malfunction.
12-09-16, 11:06 AM
#5
To kind of piggyback on this, does anyone hear a click (sounds like something shuts off with a switch) after a few minutes of turning the car off? I usually park and then sit for a few minutes at work, and I always hear something click about 2 or 3 minutes in.
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