Hey guys. So, this is my first LR3. Have owned it now for 3 weeks. Its a 2006 LR3 SE.

Just wondering if its considered normal for the vehicle to release air occasionally? It a brief hissing sound, like you would hear if when you release air out of a air compressor. When I open the door or sit in the car without starting it, you will hear like a pressure release. Sometimes just getting near the vehicle and it does it.

Just wondering.
Thanks

 

Mine always drops some pressure and ride height when I get out and lock the doors. I believe this is normal operation to extend life of the air bags / EAS system.

 

Yes, completely normal.

 

Thanks, that's good to know.

 

yes can also confirm this is normal

 

Give the vehicles some credit guys jeeze.

When you get out of a vehicle, what does it do? .....it rises because there isn't 200lbs on the springs. The vehicle simply adjusts to the new (incorrect) suspension height).

If you go somewhere and start unloading stuff, it may do this several times. There are specific programming limitations (time, occurrences, doors, etc).


MANY times temperature also plays a role. If you park somewhere early in the morning and it's 55 degrees, but leave work when it's 95 degrees - the air will have expanded within the air springs significantly. After a given period of time the vehicle will prevent adjustments till it is "woken up" - if you unlock it, open a door, etc it may lower an inch or more simply due to thermal expansion.

The same is true in the winter. I drive home in an hour of stop and go traffic from the city into a rural area where it's typically 20 degrees colder. At night it drops another 30 degrees - when the vehicle "goes to sleep" it's at higher pressure - after that significant pressure drop overnight, it's much lower and when you start the vehicle people freak out that there's air leaks, your air springs are dead, etc etc. This may be true, but you also have to remember air density/pressures as they can't support as much weight once a given volume of air at 90 degrees cools to 50 degrees.

In spring/fall when temperatures stay neutral around 70s, my land rovers hardly make any adjustments. In the summer it NEVER raises in the morning.

FWIW the newer module software (if you've upgraded within the last ~5 years or so at the dealership) will have the SLS "purge" the air lines before and after the compressor pressurizes the air tank. My 06 RRS and others do this BUT my 06 LR3 doesn't - along with other software problems, proves that none of this stuff has been updated yet on this one (TCM and bluetooth as well). Presumably one could infer that LR decided residual pressure in the lines was a bad thing.

 

So, sounds like the LR3 is always "thinking" and that's really cool. @EstorilM, thanks for your detailed input on how this system works. I have read so much about leak problems and people on other forums talking about similar behavior and folks chime in tell the guy there's a problem, but to me, it acts as if it's a programmed action.

 

I wonder if I go to the dealership can I get them to update this for me? Or will they nickel and dime me on that count

 

Ask me why I haven't done it yet lol.

I don't mind paying an hour of labor which is probably something insane like $125 here - BUT I'm sure they'll try to convince me that if I want ALL the modules updated, it'll take bogus number like 2.5hr or more.

I've seen testbook scroll through and check all the versions and update before, it takes a while but I can't picture it ever taking more than an hour.

I've noticed my park distance module acts differently than my RRS too (I've heard they tweaked when it turns on/off, in traffic and stuff) BT loses my phone every time car shuts off, the air suspension purge thing I mentioned, and the biggest being the clunky transmission in traffic. I wonder what else they updated.

 

I have done a few of the updates with GAP, I wonder if they have this one, I will ask. Are you saying these issues came AFTER you updated the firmware on those ECU's? or they are existing and you have not gotten the new update yet.