The ABC Suspension Thread
Member
Joined: Feb 2018
Posts: 227
Likes: 55
CL500, W212 e350 mega-spec
I imagine for the sensors going bad you get some sort of feedback in the diagnostics system to show faulty sensors. All my sensors look good and there's no faults recorded for the suspension system.
MBWorld Fanatic!
Joined: Feb 2012
Posts: 2,613
Likes: 1,209
From: Phoenix
222 S-65
An electrical failure in any of those will store a code.
Much more annoying is a sensor(s) not being accurate for the control unit making choices based on lies.
Plug into Xentry and ask for current values in ABC. It should give numbers for each corner. Ask it to level the car. Where height still isn’t right ask it to raise or lower each corner and save values once set correctly.
Much more annoying is a sensor(s) not being accurate for the control unit making choices based on lies.
Plug into Xentry and ask for current values in ABC. It should give numbers for each corner. Ask it to level the car. Where height still isn’t right ask it to raise or lower each corner and save values once set correctly.
Member
Joined: Feb 2018
Posts: 227
Likes: 55
CL500, W212 e350 mega-spec
An electrical failure in any of those will store a code.
Much more annoying is a sensor(s) not being accurate for the control unit making choices based on lies.
Plug into Xentry and ask for current values in ABC. It should give numbers for each corner. Ask it to level the car. Where height still isn’t right ask it to raise or lower each corner and save values once set correctly.
Much more annoying is a sensor(s) not being accurate for the control unit making choices based on lies.
Plug into Xentry and ask for current values in ABC. It should give numbers for each corner. Ask it to level the car. Where height still isn’t right ask it to raise or lower each corner and save values once set correctly.
Member
Joined: May 2020
Posts: 247
Likes: 57
From: Fort Worth
2005 CL55 AMG || 2005 CL65 AMG || 1989 560SEC
I don't think my system stored/presented an error code when my acceleration/roll sensor started tweaking out. I just drove around with my scanner showing live values till it started doing it again, and singled out the bad sensor that way. The front end of the car on one corner all but slammed itself into the road when that sensor started going.
The system takes inputs from what appears to be 3 (or 4) sets of somewhat redundant (imo) sensors. Arm angle reader, plunger depth, yaw/roll, accel/decel sensors. When my arm angle reader broke, I was able to get the car to spring back to a much more sane ride geometry by unplugging one of the roll sensors in the engine bay while running. Wonder what your car would do in that situation.
The arm angle sensor didn't give any error even though it was clearly physically disconnected from the control arm.
You might check yours and see if it's firmly mounted. If the little metal plate that's bolted to the control arm has backed out a little bit that may cause the weird corner.
That's all I've got.
The system takes inputs from what appears to be 3 (or 4) sets of somewhat redundant (imo) sensors. Arm angle reader, plunger depth, yaw/roll, accel/decel sensors. When my arm angle reader broke, I was able to get the car to spring back to a much more sane ride geometry by unplugging one of the roll sensors in the engine bay while running. Wonder what your car would do in that situation.
The arm angle sensor didn't give any error even though it was clearly physically disconnected from the control arm.
You might check yours and see if it's firmly mounted. If the little metal plate that's bolted to the control arm has backed out a little bit that may cause the weird corner.
That's all I've got.
