Air suspension Question

Another newbie question (sorry)
When coupling up and you lower the air suspension and reverse under the trailer, when you are ready to set it to “normal ride height” you press the button to bring it back up again but how do you know what the "normal ride height is?
Thanks.

Most air suspension controls have a button, not just the raise or up arrow button, to bring it back to the pre- set ride height. Also you will know when it is running at the correct height because most vehicles have a dashboard warning light which illuminates when the suspension isn’t at its normal level You don’t really need to what the normal running height is, just how to re-set it to that.

thanks for that coffee

The funny thing is that USA trucks can only lower their suspension, they cannot raise a trailer. So if you have got a trailer that has been dropped high its a matter of winding the legs down.

harry:
The funny thing is that USA trucks can only lower their suspension, they cannot raise a trailer. So if you have got a trailer that has been dropped high its a matter of winding the legs down.

Same applies to my ERF.