Thread: Disabling Auto Height Air Suspension

If you leave the drivers door open the vehicle should not change height.

Garry

The driver's door (or any door) open only inhibits selected height changes, not levelling at the currently selected height. To prevent the ecu from making any adjustments the main suspension ecu fuse in the engine bay fuse box needs to be removed.

Originally Posted by Graeme

The driver's door (or any door) open only inhibits selected height changes, not levelling at the currently selected height. To prevent the ecu from making any adjustments the main suspension ecu fuse in the engine bay fuse box needs to be removed.

Ok thanks for that - when you jack up on end of the car there is a chance it will try to self level (even with the door open) and (in a very extreme case) cause the car to move on the jack (think offroad here rather than workshop floor) - hmmm not real safe.

Cheers

Garry

With our off-road camper (which had a Tregg hitch), I'd have the car running, press "lower" on the EAS switch and immediately open the driver door. This inhibits the lowering and I'm pretty sure whilst inhibited it won't auto-adjust. At least mine never did.

Cheers,

Gordon

Originally Posted by garrycol

.... cause the car to move on the jack (think offroad here rather than workshop floor) - hmmm not real safe.

RACQ and others won't change a wheel on a D3/4
according to some on the Forum.

Originally Posted by gghaggis

With our off-road camper (which had a Tregg hitch), I'd have the car running, press "lower" on the EAS switch and immediately open the driver door. This inhibits the lowering and I'm pretty sure whilst inhibited it won't auto-adjust. At least mine never did.

I just confirmed this with my D4 using Llams to simulate the effect of adding and removing weight. Engine running, normal height with the door open then select access height, the vehicle would not level downwards using Llams -20mm, but would level upwards using +30mm! Without the engine running but the ignition still on, no change up or down could be forced. I didn't try with the ignition switched off after access height was selected, but ordinarily Llams will lower with the ignition off.

Edit: I've confirmed that switching the ignition off with access height pending due to the door open does not inhibit lowering once the ignition is switched off.

I've also just unhitched my trailer with access height pending with the engine running and no height adjustment was attempted and no opening of the exhaust valve. Selecting normal height before closing the door cancelled the access height request, with the result of no height change other than a subsequent level due to the trailer no longer attached.

Gordon, you've nailed it!

Going down to Access height and locking it there should stop any suspension movement - might be a bit low if the OEM plow tow hitch is fitted but would still be reasonable if a Mitch Hitch was fitted.

Garry

Hello all,
Thanks for the feed back. I shall give the Open Door and Activate Access Mode and see how I go on the weekend.
New to the Discovery's may I "Graeme" what is "Llams"?

NTB