Ken Keith

What are the factory values for the FL&FR ride height sensors? Are the values the same for both sensors? Or is one opposite the other +3V on LF & - 3V on the RF?
​​​​​​
Pulled into the garage and noticed the RF is an inch lower than the Figuring either leaking air strut or level sensor.

The front is currently on jack stands with tires removed & the LF ride height voltage is @ .50 v and the RF 4.95v, I'm lowered on links so the volts might be slightly out of spec but they should both be about the same correct?

bbirdwell

Voltage values are not about the same; they are offset.
As car suspension lowers, voltage increases. As suspension raises, voltage decreases.

Ken Keith

Excellent, thank you.

eightysixtuned

posted this recently.
https://mbworld.org/forums/w211-amg/...questions.html

for my car, fiinal adjustment got me to which was perfect

Left Front 2.41v
Right Front 2.47v
Rear 2.45v

funny that my right front is lower by 0.5-1 inch as well 50% of the time. i'm going to replace the sensor to see if it helps.

Ken Keith

I thought it was a sensor issue at first but turned out to be a small leak in the FR airbag that would only leak at specific ride heights.

Originally thought it was a sensor because it only happened occasionally and while I had the front jacked up with 1 wheel removed, I was getting some weird values from the level sensor.
Which makes sense, even though the front is was on jack stands, 1 air strut was still holding more air & pressure than the other.
​​​​
I found the air leak when was in the middle of swapping the level sensors (RF to LF) to see if the drop would follow the sensor which it didn't. While putting the level sensors back to original configuration, I could hear a slight leak in the air bag while letting the car down off the jack.


​​​​​
​​​​​