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Discussion Starter #1
Hi everyone! My mechanic has sent me on a mission to pick up a new (to me) EAS ECU. Just wondering if there is any functional difference in the ECU over the model years. I have a 96 HSE and I've come across several part numbers. I'm guessing they're just successive versions of the same part, but just wanted to make sure. I can't seem to find a concrete answer anywhere.

Thanks!
 

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ANR3773 Air Suspension Unit to VIN MA308966
ANR4499 Air Suspension Unit from MA308967

All previous part numbers for the air suspension ECU have been superceded by RQT100040
 

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Discussion Starter #5
shupack said:
why? I've never seen a failed ECU (except one that had Coke spilled on it, it was obviously the problem.)
I recently had all four air springs replaced along with all four shocks. Springs were OEM and shocks Sachs. The next morning, I noticed that the truck was sitting with its tail way up at the top of the range and the nose on the bump stops. When out driving, it would raise itself, lower itself, raise the tail, lower the tail and so on constantly. It seemed to know where level was, because it always levelled itself if I let off the brake at a traffic light. I took it back to my mechanic (who is a Land Rover specialist that's always been very fair with me and whom I trust very much just so I've said it), and he re-calibrated the EAS. This time he noticed a faulty right front height sensor and replaced it. He made it a point to mention that the compressor was beginning to show signs of impending failure, so we ordered another.

The truck then blew the main EAS fuse on the way home that day. No hard fault, luckily. I waited until the new compressor arrived, installed it and replaced the fuse. Hey presto! All good again.

Until the next morning when the front was on the bump stops and the tail up at the top of the range again. I thought maybe the blown fuse immediately after the previous calibration might have been the culprit, so off I went to have it calibrated again.

This time, my mechanic told me that he's getting height sensor readings from the computer that are so out of whack that he's convinced that the ECU is fried. I wish I'd written down the numbers he mentioned, but I didn't. He calibrated it as best he could and since then it doesn't hunt around while under way any more, but it will get level itself strangely overnight. Sometimes, I can park it at normal height and come back to it with no problems hours later. Other times, I'll run in somewhere for some milk and come back out to find the thing nose on the bump stops and tail in the air again.

I have spilled coffee into the driver's seat a couple of times from the (ridiculous) cupholder setup, so that might be the culprit.

Any thoughts? I have no diagnostic gear of my own and my mechanic is somewhat resistant to trying things out that I've found on the internet (guess he's been bitten before).

And it may be unrelated, but I get ABS, Traction and Parking brake warnings flashing once momentarily when I depress the brake pedal. We replaced the brake light switch, but it's come back. It doesn't happen every time I go out, but sometimes it happens every time I touch the brakes. Dunno if it's related, but stranger things have been connected in Rangie land, I've discovered.

Thanks!
 

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Be surprised if it is the EAS controller,more likely to be the valve driver board if odd things are happening. :eek:

The abs,TC lights would not be related, but likely to be the brake accumulator.Generally the gas precharge pressure in it leaks down over time and the unit has to be replaced.
 
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