NSF had a decline or decrease.

[depofly]

I anticipated this, so it comes as no surprise.
The front near side of the vehicle has had a sagging issue and does not elevate when the engine is turned on. This problem occurred while driving.
After completing a 900-mile round journey, I parked the vehicle and saw that it had experienced sagging.
Do you have any suggestions on the first search location?
Attempted to upload a picture, but encountered an issue due to the file's excessive size. (photograph taken using a mobile phone)

Is the rear suspension equipped with an air suspension system while the front suspension consists of ordinary springs? Considering that the vehicle is completely original, is it possible that this is the configuration?

[AmericaMonster]

Is the spring broken or has the suspension mount collapsed?

[depofly]

Does it have coil springs in the front and pneumatic suspension in the rear? Is it considered typical?

[Tactical]

If the Airmatic system is not fully functional, then the answer is yes.

[depofly]

I discovered a similar discussion where it is advised to simultaneously replace both front springs. Which springs are the most suitable to fulfil the original equipment manufacturer (OEM) specifications?

[Racerse]

OEM

[depofly]

Are you referring to genuine Mercedes parts? The user's text consists of three currency symbols (£££).

[Racerse]

Indeed, I now possess a somewhat greater amount of time to provide a more detailed explanation.

MB springs are custom-made for each vehicle, taking into account the choices and weight of the unique automobile.

The dealer need the information on the three colour bands on your springs in order to accurately order the appropriate pair for your automobile.

Installing aftermarket springs with a moderate spring rate should suffice, however the vehicle's height may vary based on the specific options installed.

I rebuilt the struts on my CLS and bought the new springs from MB Grangemouth. I removed the old struts and brought them to the dealership, where they promptly installed the new springs while I waited.

[depofly]

That seems convenient. If they provide the same service in Grangemouth, I could drive there. I will inquire about it. Thank you much for the guidance.

[Mindumer]

Sachs, I recommend using AUTODOC if you are able to wait for a duration of 8 days.

[depofly]

I purchased a replacement from Mercedes since the lower coil had broken off. The shocks seem to be in good condition, as do the rubber gator and bump stop. I am just doing one since I currently have limited financial resources. The cost is £76, which is rather affordable. The previous one was easily removed.

[depofly]

I had a new spring installed by a garage for a fee of £10. The installation process was straightforward and the vehicle is now at the correct height. Spring compressors designed for do-it-yourself usage may not be able to effectively compress this particular spring. To ensure safety and prevent potential injuries, it is advisable to take the spring to a professional garage and use a suitable floor mount unit specifically designed for this purpose.Mercedes refused to proceed until I scheduled it as a formal task.
I opted to utilise the existing shock absorber as it seemed to be in good visual and tactile condition. If I had Mercedes handle the task, they would have replaced both shocks and performed the work on both sides, resulting in an invoice amounting to £1,000 without a doubt.
For your information, the pattern on my spring consisted of three yellow stripes and one green stripe.