AIRMATIC raise

[Mactech]

Now that I have lowered my S Class, I find the feature useful for big speed bumps and rough tracks.
But today I’m in a brand new steel sprung CLS. The wife has my car. That’s because the day after her ML was serviced, the Airmatic locked solid on her! Powering down and then powering back up seemed to cure the problem until this morning when the suspension went solid on her again! This is a ‘self preservation’ mode when there is an Airmatic control ECU problem. I hope they find the soft/hardware fault very soon, you would not believe how hard the lack of suspension is!
Anyone ever heard of this issue before? I’m told the air suspension on Range Rovers has been know to suffer something similar, but never heard of it on a Mercedes and I have two with Airmatic.

 

[Diesel Benz]

Now that I have lowered my S Class, I find the feature useful for big speed bumps and rough tracks.
But today I’m in a brand new steel sprung CLS. The wife has my car. That’s because the day after her ML was serviced, the Airmatic locked solid on her! Powering down and then powering back up seemed to cure the problem until this morning when the suspension went solid on her again! This is a ‘self preservation’ mode when there is an Airmatic control ECU problem. I hope they find the soft/hardware fault very soon, you would not believe how hard the lack of suspension is!
Anyone ever heard of this issue before? I’m told the air suspension on Range Rovers has been know to suffer something similar, but never heard of it on a Mercedes and I have two with Airmatic.

Is it the Airmatic pump relay, if not the pump itself? Those go relatively often, of course if there is a leak somewhere, then the pump needs to work more.

 

[Mactech]

Is it the Airmatic pump relay, if not the pump itself? Those go relatively often, of course if there is a leak somewhere, then the pump needs to work more.

All the hardware seems to be fine. The first instance logged a fault of 'possible control unit fault'. But then went and worked perfectly for the next 10 days. I will find out tomorrow if the second occurence has logged any useful information.