W211 AMG Discuss the W211 AMG's such as the E55 and the E63

Front Ride height sensors RF=.5v, LF=4.5v

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Old Apr 20, 2026 | 12:19 PM
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07 Cls550
Front Ride height sensors RF=.5v, LF=4.5v

While diagnosing a ride height issue, the car never sat perfectly level.

I noticed some weird values in the ride height sensors.
With the front of the vehicle lifted off the ground, wheels fully extended, I'm showing 0.5v in the RF sensor and 4.5 volts in the LF.
When I manually move the level sensors up towards max range , 4.5v RF, 0.5V LF.

I don't see any way to flip or rotate the sensors. One is always going to be opposite voltage of the other. It's like I have 2 right front level sensors but the part # appears to be the same for both sides

Last edited by Ken Keith; Apr 20, 2026 at 12:39 PM.
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Old Apr 20, 2026 | 02:53 PM
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'99 and '05 E55 AMG

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Old Apr 21, 2026 | 12:01 AM
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[QUOTE=bbirdwell;9283003] [

Looking at the voltages, while trying to lower the car by lengthening the links, the LF the voltage is going up & RF voltage is dropping. I was under the impression both are supposed to mirror each other?

I can get the left front to sit on the fender but the RF will only lower an inch or so but won't go past that no matter how long I make the link
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Old Apr 21, 2026 | 02:20 PM
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@Ken Keith

First photo is at my calibrated ride height:


Second photo is after I lowered the car 15mm all around:



Left front increases voltage as you lower the car.
Right front decreases voltage as you lower the car.
Rear sensor increases voltage as you lower the car.

Last edited by bbirdwell; Apr 21, 2026 at 02:22 PM.
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Old Apr 21, 2026 | 11:40 PM
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Originally Posted by bbirdwell
@Ken Keith

First photo is at my calibrated ride height:


Second photo is after I lowered the car 15mm all around:



Left front increases voltage as you lower the car.
Right front decreases voltage as you lower the car.
Rear sensor increases voltage as you lower the car.
Thank you.
When I was searched, it said the voltage should match the other said & my sensor arm could of been rotated or swapped. After taking off both level sensors & banging my head for an hour, there simply isn't possible to reverse or accidentally swap the sensors.
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