Technical Factory fitted air suspension problem

[skvsn]

Hello, I've got a 2015 Ducato with factory fitted air suspension. The van seems to lower in less than 12 hours - there must be some air leak. Couple of questions:
1) what is the most likely cause? air bags, air lines, compressor?
2) before disconnecting any air lines - how do I make sure there is no pressure in the system? is there any drain valve there?

Thanks a lot for any advice

 

[goggs]

Your looking or air leaks here. When looking for leaks in wheels/tyres easiest way to find leak is by spraying a soapy water mix around tyre tread. So how do you find leaks on air pipes, hoses and valves. Buy a cheapo plant water sprayer, add some Fairy or like and spray all the joints you can find.
Or just buy a gas leak detector spray can.
Fixing the leak comes next of which your going to learn about plastic hose couplings more-so than rubber hoses. PTFE white tape is one repair solution. So you aim is to find out what's fitted then order parts.