The Range Rover 4.6 HSE P38 EAS modification page

The background and reason to why I started to find out a way to
prevent the EAS (Electronic Air Suspension) on my Range Rover P38
to be active only when the ignition is on.

1. In a perfect world the EAS system should be totally air tight and without any leaks. However the world isn't and neither is the old
   1999 P38 that I own.
2. This wouldn't be a problem if I used my P38 daily since the
   pressure drop that my car suffers is just to be considered as
   normal (I think) but I barely use my car on "work days" so it
   can be parked for many days.
3. When one of the corners of the P38 are sagging a bit it will wake
   up the EAS system that will try to keep the car level by lowering
   the other 3 corners. It will keep doing this and at the end of the
   week I will have my P38 on the bump stops. And since the EAS system also wakes up the BEMC that use quite a bit of current it
   will also drain my battery in less than two weeks to a level where
   it isn't possible to start the engine.
4. Having the P38 parked outside my neighbors bedroom window they don't appreciate the noise the P38 makes when leveling (Letting air out)
   
   

By taking a look at the schematics in the RAV manual I took a
decision to try to cut the power to the Air suspension ECU and this
way dissable self leveling when the Rangie is parked.

It would be possible to do this with a DIY brake out wire harness and
just plug it in at fuse 23 and 29, but I tought it would look better the
way I finaly did it.

Remove the ground wire from the battery!

Unscrew the three bolt and nuts that holds the fuse box in place and
tilt it up inwards the engine bay and you might have this colorful
view (If you car have the same config as in my P38 :0)

Now splice a wire to the Green wire at the green connector and hook
it up to the relay coil (look at the schematics below (1) ).

Also make a new ground wire to the other side of the relay coil and
hook it up to the ground stud just below the fuse box (Again take a look at the images below (GND) )

Now cut the Pink/Red wire at the yellow fuse box connector then strip
and crimp (or solder) some extension wires to the ends of the two cut
of ends and connect them to each of the relay contacts (2) and (3) in
the image below.

Done, simple as that!

By following the schematics and images above it shouldn't be any problem to
perform this mod.
Just make sure your vehicle comply with this schematics.
And just for some extra safety, use a multimeter to do a physical check!

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