I know there are a couple of 38 owners on here along with some that may get asked to look at a problem with the EAS lowering itself overnight. Now assuming there's no leak, the main reason is that the EAS ECU ( a fairly simple soul) tries to level the vehicle when its parked and this, depending on the contours of the ground, can result in it lowering a corner at a time until it is on, or near to, the bump stops. This results in having to wait a while until the suspension rises again before driving off.
Over the last few weeks I've, obviously, been researching the hows of returning to EAS and came across this little snippet on the internet. I've edited the irrelevant stuff, but left the name for accreditation.
Here’s a workaround to prevent the Range Rover P38 Electronic Air Suspension waking up periodically to level your vehicle overnight… or when standing still …. Or when a small dog flys by … LOL (This feature!!!) Causes two problems, the Rangie drops down corner by corner towards or onto the suspension bump stops overnight OR your battery is goes flat for no apparent reason ….. or worse – Both.
Land rover deemed that customers would want the vehicle to stay level at all times – Not ideal in most situations – sloping driveways, uneven ground where you park you Rangie ….
The EAS has a wakeup timer and EAS ECU that control the wakeup and autolevel function which are continuously powered via Fuse F44 in the fuse box under the bonnet.
When the EAS wakes up it also wakes up the Body Electrical Control Module BECM – The battery power consumption rises 10 fold to 3 to 4 Amps – may not seem much, but add that up overnight for a few hours and days on end ….
Solution.
This fix – provides the EAS power off the ignition switch, so when turning off the engine, it turns off the EAS wakeup feature! That’s got to be good for all Rangie owners!!!!
Fix Description
Here is an easy fix - We can prevent the Range Rover waking up and self leveling.
So - Go buy a spade type add-in fuse holder with two wires hanging out of it and two (a packet) of spade crimp terminals from your auto accessory store. Next strip and crimp, two spade terminals onto the wires on the fuse holder – then Remove Fuse F44 10Amp and insert it into the fuse holder you made up. Next locate Fuse holder F35 in the fuse box under the bonnet – There is no fuse in it – Its not used (on my HSE anyway).
This fuse socket is switched on and off with the ignition …! – Excellent – just what we want!!!!
Next - Plug one spade terminal from your new fuse holder into the outside position of F35 (That’s the side of the fuse holder nearest the outside of the vehicle or mudguard and plug the other end into F44 – The inside position, this time or the side beside the engine!
This will provide the EAS with power ONLY when the ignition is on and hence prevent the EAS waking up to self level etc ….
If you have a leak – It will be obvious where it is.
Attach a label or a note inside as follows – “ (I used a Dymo Labeler ) which says “ EAS wakeup bypass lead inside – Remove this cable and reinstate F44 10 Amp fuse to return to factory configuration) – This modification prevents the EAS from waking up by supplying power from the spare switched ignition source F35)”
My Rangie suspension stays up now – When I start it in the mornings – no more driving out the driveway with it sagging back/front or sideways, no waiting for leveling – and no more flat batteries!!!!!
NOTE pull out the FUSE F44 when you get the EAS FAULT ERROR message on the Dash – Its much easier to remove the fusebox cover and fuse F44, than pull the red timer relay out under the seat. If you don’t remove the fuse or timer when you get the dreaded message – you WILL drive home on the BUMSTOPs!!!!!
Pete Thomson
New Zealand
I did this fix a couple of days ago and she seems quite happy.
Over the last few weeks I've, obviously, been researching the hows of returning to EAS and came across this little snippet on the internet. I've edited the irrelevant stuff, but left the name for accreditation.
Here’s a workaround to prevent the Range Rover P38 Electronic Air Suspension waking up periodically to level your vehicle overnight… or when standing still …. Or when a small dog flys by … LOL (This feature!!!) Causes two problems, the Rangie drops down corner by corner towards or onto the suspension bump stops overnight OR your battery is goes flat for no apparent reason ….. or worse – Both.
Land rover deemed that customers would want the vehicle to stay level at all times – Not ideal in most situations – sloping driveways, uneven ground where you park you Rangie ….
The EAS has a wakeup timer and EAS ECU that control the wakeup and autolevel function which are continuously powered via Fuse F44 in the fuse box under the bonnet.
When the EAS wakes up it also wakes up the Body Electrical Control Module BECM – The battery power consumption rises 10 fold to 3 to 4 Amps – may not seem much, but add that up overnight for a few hours and days on end ….
Solution.
This fix – provides the EAS power off the ignition switch, so when turning off the engine, it turns off the EAS wakeup feature! That’s got to be good for all Rangie owners!!!!
Fix Description
Here is an easy fix - We can prevent the Range Rover waking up and self leveling.
So - Go buy a spade type add-in fuse holder with two wires hanging out of it and two (a packet) of spade crimp terminals from your auto accessory store. Next strip and crimp, two spade terminals onto the wires on the fuse holder – then Remove Fuse F44 10Amp and insert it into the fuse holder you made up. Next locate Fuse holder F35 in the fuse box under the bonnet – There is no fuse in it – Its not used (on my HSE anyway).
This fuse socket is switched on and off with the ignition …! – Excellent – just what we want!!!!
Next - Plug one spade terminal from your new fuse holder into the outside position of F35 (That’s the side of the fuse holder nearest the outside of the vehicle or mudguard and plug the other end into F44 – The inside position, this time or the side beside the engine!
This will provide the EAS with power ONLY when the ignition is on and hence prevent the EAS waking up to self level etc ….
If you have a leak – It will be obvious where it is.
Attach a label or a note inside as follows – “ (I used a Dymo Labeler ) which says “ EAS wakeup bypass lead inside – Remove this cable and reinstate F44 10 Amp fuse to return to factory configuration) – This modification prevents the EAS from waking up by supplying power from the spare switched ignition source F35)”
My Rangie suspension stays up now – When I start it in the mornings – no more driving out the driveway with it sagging back/front or sideways, no waiting for leveling – and no more flat batteries!!!!!
NOTE pull out the FUSE F44 when you get the EAS FAULT ERROR message on the Dash – Its much easier to remove the fusebox cover and fuse F44, than pull the red timer relay out under the seat. If you don’t remove the fuse or timer when you get the dreaded message – you WILL drive home on the BUMSTOPs!!!!!
Pete Thomson
New Zealand
I did this fix a couple of days ago and she seems quite happy.
