Problem with 2005 E500 after oil change HELP!
The height can be adjusted electronically. But they shouldn't have touched anything that would've messed up your suspension height. Just tell them that and ask them what they did.
They could've messed it up, but it also could've been a coincidence where your airbag strut(s) broke/died because they tend to do that.
I've read some older threads about jacking the vehicle. When the suspension is reloaded and it's not done with the engine on and done incrementally, others have experienced a suspension failure.



