I have a very strange EAS problem.
My car is a 98 P38 4 .0 with 130k miles.
A few months ago I had my Range calibrated, as it was not how it is supposed to be. One day later I ended up in hard mode, after taking it to the Independent range rover specialist. They found that the rear right height sensor had given up. So I replaced it and thought that my troubles would be over, the car raised but was too high on the right rear.
After a few days it went back to hard mode.
When the car was connected to testbook, it indicated that at all levels the car was raising and lowering perfectly, except that the car did not raise or lower.
So started checking all possible faults:
EAS relay: was fine
EAS ECU: swapped it with another ECU to check
Swapped the Valve block with a driver pack, was not the problem either
Checked the compressor, is running
Air bags and height sensors were checked before calibration and the right rear sensor showed wear at this point
When testbook is connected to the BECM it will indicate as before that the car is raising and lowering perfectly. (even with the right rear height sensor disconnected it will show this).
The last week I got the Schrader manual bypass valves, to get the car up from the bump stop, this works except from the right rear which has a blockage in the line. After reading the thread by Willos I suspect I have the same problem which is a melted airline, because of a leak in the rear exhaust. I have a new exhaust, but did not put it on as I wanted to sort the EAS out first.
Could it be that the EAS ECU would not operate because of this blocked airline? Or should I look for something else?
Just received a post reply by 996turbo, on another thread by Willos about blocked airline:
My car is a 98 P38 4 .0 with 130k miles.
A few months ago I had my Range calibrated, as it was not how it is supposed to be. One day later I ended up in hard mode, after taking it to the Independent range rover specialist. They found that the rear right height sensor had given up. So I replaced it and thought that my troubles would be over, the car raised but was too high on the right rear.
After a few days it went back to hard mode.
When the car was connected to testbook, it indicated that at all levels the car was raising and lowering perfectly, except that the car did not raise or lower.
So started checking all possible faults:
EAS relay: was fine
EAS ECU: swapped it with another ECU to check
Swapped the Valve block with a driver pack, was not the problem either
Checked the compressor, is running
Air bags and height sensors were checked before calibration and the right rear sensor showed wear at this point
When testbook is connected to the BECM it will indicate as before that the car is raising and lowering perfectly. (even with the right rear height sensor disconnected it will show this).
The last week I got the Schrader manual bypass valves, to get the car up from the bump stop, this works except from the right rear which has a blockage in the line. After reading the thread by Willos I suspect I have the same problem which is a melted airline, because of a leak in the rear exhaust. I have a new exhaust, but did not put it on as I wanted to sort the EAS out first.
Could it be that the EAS ECU would not operate because of this blocked airline? Or should I look for something else?
Just received a post reply by 996turbo, on another thread by Willos about blocked airline:
, my money on the melted airline due to center exhaust heat. 
