Car Owners Hub UK - Built by Drivers, for Drivers

I just got a 2013 CLS 350 V6 shooting brake for myself. It is an incredible vehicle. Even though it has a minor flaw, I still adore it. Drive time causes the nearside rear air suspension to automatically pump itself back up. In addition, the opposite side dips somewhat. Even when parked, it maintains its height. It will level out for a time again if you switch it off for a bit and then drive it again.
It may be an offside airbag that is leaking, according to my neighborhood garage. Telling me that the pump is attempting to maintain one of them by pumping both of them up.
How do you feel about this? According to my experience with owning Land Rover Discoverys equipped with rear air bags. I think the height sensor is malfunctioning. I thought they said the height sensor was working. I am willing to pay for an air bag if it resolves the problem. However, I will have wasted money on unnecessary air bags if it doesn't.

Could you please lend me a hand?

Would you prefer a private sale or a dealer sale?

Street vendor on the back. This is what I usually refer to as a trader.

Request that the trader repair it by going to them.

Hundreds of miles separate us, and that's my main issue.

Their problem is that.

When I reassembled the suspension and confused the left and right air lines, I experienced the same problem.