W223 Motor Mount Wires...Why?
07-31-2022, 12:08 PM
#1
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W223 Motor Mount Wires...Why?
Why are there wires going to the bottom of the motor mounts on the M256 straight six petrol motor?
Detect leaked oil & low height when they they fail, haha? Load sensors? Alter their stiffness? Have to be programmed so they cost way more?
Similar item on previous models:
Detect leaked oil & low height when they they fail, haha? Load sensors? Alter their stiffness? Have to be programmed so they cost way more?
Similar item on previous models:
07-31-2022, 12:43 PM
#3
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Asking a technical question with suggested possible answers strewn about 
I've replaced the engine mounts on other Mercedes vehicles but none with a wire attached. Thanks
I've replaced the engine mounts on other Mercedes vehicles but none with a wire attached. Thanks
07-31-2022, 02:27 PM
#4
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MY'14 W212 M276 3.5NA @60kMi
dynamic mounts
++++ Edit++++
A feedback sensor is used to measure vibrations and activate solenoid as needed through external control.
Last edited by CaliBenzDriver; 08-07-2022 at 12:41 PM.
08-01-2022, 08:04 AM
#5
Junior Member
They are active mounts, which means they produce offsetting vibration at a similar frequency to the engine to naturalize pass through to the cabin.
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08-01-2022, 10:48 AM
#6
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2017 GLE350 4MATIC
Why are there wires going to the bottom of the motor mounts on the M256 straight six petrol motor?
Detect leaked oil & low height when they they fail, haha? Load sensors? Alter their stiffness? Have to be programmed so they cost way more?
Similar item on previous models:
Detect leaked oil & low height when they they fail, haha? Load sensors? Alter their stiffness? Have to be programmed so they cost way more?
Similar item on previous models:
08-07-2022, 07:31 AM
#7
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So the motor mounts have adjustable damping seems the most likely. Thanks for the replies.
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chassis (08-07-2022)
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08-07-2022, 12:21 PM
#8
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2017 GLE350 4MATIC
Video #4 shows the active (dynamic) engine mount system.
https://aftermarket.zf.com/go/en/lem...engine-mounts/
https://aftermarket.zf.com/go/en/lem...engine-mounts/
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