But a pinhole in feed pipe would not stop car lowering?
Coke that would definitely raise it and me to
Think @Datatek meant dessicant from the dryer can play havoc with the valve block.
A new dryer dump desiccant in mine after a few months.Doubt it is dessicant as Saint put a new dryer on for him not so long ago. Need diagnostics on it!
It's a P38, if it has a hard fault, the "Slow 35 mph" message will show and the EAS will drop to the bump stops. Some transient faults will cause the car to go to wading height with no fault message.I'm guessing it depends if it has thrown a hard fault. If it has TAHF and cannot get to intended height then I think it just freezes and won't go up or down.
Woukd the brake lights be on all the time then?
And did that knock out your EAS?
I have seen few with EAS problems with brake lights. Also issues due to cheap bulbs causing similar things on L322 too