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Noise from engine compartment with car off. Should I be concerned?

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Old 09-20-2017, 09:08 PM
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Noise from engine compartment with car off. Should I be concerned?
2014 E350 sedan. Engine off - key out. Making a whining noise from the engine compartment (front/low). Sounds like something running??? Can feel a vibration through the hood. Do I need to be concerned?
Fire hazard?
Battery hazard?
Any advice/help/suggestions would be greatly appreciated. Thanks
Last edited by abqhudson; 09-20-2017 at 09:09 PM. Reason: clarify
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Old 09-20-2017, 09:39 PM
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2014 E550-sold 😩
LED lighting cool down fans. Lock the car and they should stop running within a short time.
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Old 09-20-2017, 09:42 PM
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Originally Posted by abqhudson
2014 E350 sedan. Engine off - key out. Making a whining noise from the engine compartment (front/low). Sounds like something running??? Can feel a vibration through the hood. Do I need to be concerned?
Fire hazard?
Battery hazard?
Any advice/help/suggestions would be greatly appreciated. Thanks
https://mbworld.org/forums/e-class-w...ing-noise.html
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Old 09-20-2017, 10:21 PM
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Originally Posted by KEY08
LED lighting cool down fans. Lock the car and they should stop running within a short time.
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Old 09-20-2017, 10:21 PM
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Originally Posted by tresean1
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Old 09-21-2017, 03:24 AM
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whining noise from the engine compartment is usually the technician from a stealership after a service and nothing else was needed to be fixed.so no extra cash for them LoL
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Old 09-21-2017, 12:40 PM
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Originally Posted by abqhudson
2014 E350 sedan. Engine off - key out. Making a whining noise from the engine compartment (front/low). Sounds like something running??? Can feel a vibration through the hood. Do I need to be concerned?
Fire hazard?
Battery hazard?
Any advice/help/suggestions would be greatly appreciated. Thanks

Hey, if you let the car cool down for about 30 to 45 minutes, it'll go away
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Old 09-21-2017, 02:04 PM
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Is the noise still occurring with the key in the ignition, or the key out of the ignition? or is it keyless-go?

That could have some affect on it...I know there are sounds under the engine with the key in, and after removing it (mines a w212 with no keyless go) after a few mins the whine goes away. There are a multitude of noises but the vibrations your describing dont sound good...

How long does it go for? maybe listen with a stopwatch
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Old 09-22-2017, 12:23 PM
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Originally Posted by Trancebolt
Is the noise still occurring with the key in the ignition, or the key out of the ignition? or is it keyless-go?

That could have some affect on it...I know there are sounds under the engine with the key in, and after removing it (mines a w212 with no keyless go) after a few mins the whine goes away. There are a multitude of noises but the vibrations your describing dont sound good...

How long does it go for? maybe listen with a stopwatch
My 2015 does it too without the key in the ignition and I don't have full LED light package. I hear it come when I open the door or hood. I always wonder if this will drain the battery.
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Old 09-22-2017, 02:40 PM
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Originally Posted by Peter_02AMG
My 2015 does it too without the key in the ignition and I don't have full LED light package. I hear it come when I open the door or hood. I always wonder if this will drain the battery.
You don't need full LED lighting package for this to be unique, as the E-class has low beam LEDs also.
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Old 09-22-2017, 04:46 PM
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^ yep, this is absolutely correct.
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