[stevesal]

My 2001 4 litre SE has developed an intermittent issue with the EAS. It turns on all the dashboard lights, flashes EAS fault once, but seems to operate normally. On stopping the car and turning off it mostly resets and there is no
longer a problem. It has been occurring for the last couple of weeks.

I have noted previously that the height control is hunting slightly and wondering if I have the driver pack on the way out. Rebuilt compressor and valve block was put in about 6 months ago.

Car is not used daily, and has 170,000 km on the clock.

This most recent fault is not one I have seen discussed, and was thinking both issues are linked, and possibly a slowly dying drive unit.

Your collective guru thoughts would be appreciated, thanks in advance.

 

[private_user]

I don't think I'd be looking at the driver set to start with. It has more of a poor connection 'feel' to it, probably worth pulling related connectors and spraying with contact cleaner then re-seating. Also check battery and/or terminal connections along with body earths etc.

This is from first principles though, it may well be that someone else has had your experience and may be able to pinpoint the issue more accurately.

 

[Richard_G]

All 4 lights coming on isn't the fault, it's them going out for a brief period that brings up the EAS fault message and then they come back on again so you get all four as it reboots. I had one car to look at that did it every time you hit a bump. The fault is, as said, a faulty connection, almost certainly in the multiway connector behind the LH kick panel. Contact cleaner might work for a while but the certain cure is to cut the connector out and solder the wires together. The connector is only there so the loom can be made in sections and fitted into the car during production, it has no other purpose. Do one wire at a time though so you don't get them crossed.

 

[marty_nz]

As Richard says...

Check the LH footwell behind the kick panel - connectors are known for going green and corroding - and all the connections between the inhibit switch, height selector, and the EAS ECU go through one of the connectors. I've seen it a number of times where bad connections cause random/intermittent issues!

 

[Balloun2001]

It could also likely have a height sensor out of range- I had a similar issue recently and found the front right height sensor to be the culprit. It will register a soft fault then reset every time you restart the vehicle. Have you received a fault code?

 

[stevesal]

It has been a while so I thought I had better close the loop on this post. I pulled the valve block unit out and found one of the bolts stripped that holds the base to the solenoid valve on the nrv block.

I had another block and rebuilt the whole valve block, overhauled the compressor while I was at it.

Been perfect ever since !