[smurtaza]

When parked over night most of the time my 00 RR 4.0 SE would lower the passenger rare bag but not to bump stops. Startup would raise it back quickly and everything worked great. Yesterday after 3 hour long drive, on the highway it raised itself to high mode and then after stop passenger rare would refuse to go down. I have tried to move EAS but rare passenger does not want to go down.

What could be the problem?

 

[RRToadHall]

Sounds like both a leak at the bag as well as a stuck/sticking valve.

 

[smurtaza]

What would be the procedure to fix a sticking valve? Does it require rebuild of valve block, is there anything I can do on short term to un-stick it?

 

[shupack]

a "stuck valve" is typically a failed driver module that doesn't open the valve anymore. For some reason, the Right Rear valve circuit is the one that typically fails on the driver module.

The only valve I've seen actually stuck was AFTER a rebuild, it was re-installed incorrectly.

 

[leftlanetruckin]

The only valve I've seen actually stuck was AFTER a rebuild, it was re-installed incorrectly.

Lalalalala, not that i would EVER do that, but......

Martin

 

[shupack]

The only valve I've seen actually stuck was AFTER a rebuild, it was re-installed incorrectly.

Lalalalala, not that i would EVER do that, but......

Martin

I forgot that was you! thanks for the reminder..

 

[smurtaza]

Thanks all for the expert advice. Overnight the stuck wheel had deflated (because of a leak somewhere) and at startup everything is back to normal. Now I am contemplating taking the RR on 8 hour long weekend trip, not sure under the circumstances a wise choice. I do have EAS Buddy to help with faults on the road.

Expert opinions are welcomed.

 

[shupack]

that points to a failing driver module, more likely it started working because it cooled off, not because of the leak.

The buddy will reset the fault if you get a fault, but if the driver module packs up, it won't do you any good at all, can't even use override (pigtails method) if the driver dies.

 

[viperover]

Hopfully on your long 8hr drive you will be on the open road, airflow should keep the eas box cool enough to prevent it getting hot, its town driving that kills these driver packs more than age itself

 

[smurtaza]

its town driving that kills these driver packs more than age itself

Interestingly earlier in the day driver module failed (stuck valve) I was stuck in traffic for 3 hours. If heat is what usually causes the driver module to fail, I am sure stuck in traffic was the culprit. Now the question is, was that permanent damage or should I be able to get a little more time out of the failing module? It seems to be working fine for now.

 

[Ronron]

A question: Pulling the timer relay under the driver seat will that also disable the driver module?
I was wondering if it could be used as an emergency procedure to stop any further unwanted height changes during a trip.



Regards,

 

[shupack]

Yes, pulling the timer-relay cuts power to the suspension ECU, so it won't do anything. You will get the "eas fault" and beep on the dash, but only because the BECM isn't getting the "all clear" signal from the EAS. when you replace the relay the message will clear.