Discovery drops on the both sides at the back intermittently or when trailer is hitch

Niall_Ire said:

My discovery 2 ( 03 with 121k miles) has started dropping at the back (both sides) with a hissing sound. It pretty much happens everytime I attach a trailer but now this also has started it when not hitched sometimes.

If I leave it running stationary it remains down until I drive for a short while.

I previously replaced an air bag on the drivers side when it used to drop on that side and had no issues for about two years.

Thanks

Niall

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Niall_Ire said:

Thanks Sierrafery,

Good point about how far it drops, I seemed to go down to the bump stops but I'll double check. What does the 30A fuse (F11) Control?

Why should I have replaced both bags? I thought that they were independent?

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