Thread: SLS problem doing my head in

Originally Posted by xaymaca

Yep absolutely agree Pedro! Problem is that I shouldn't expect it to drop when I open a door, so something is screwy lol

Maybe it is programmed for little people so they don't have the height to try and climb into the driver's seat.

I think you're right. I'll just leave it and live with the fact that it's programmed for my wife lol

tape the door switches closed

Originally Posted by lewy

tape the door switches closed

That's impossible on a D2 m8, the switches are within the latch actuators

Just had a thought, I changed the slabs over and I *think* before I did the calibration it still had the same issue.
Wish I remembered more clearly!

If that's the case, it has to be sensor wiring surely?

IMO a sensor wiring(or any other wiring) issue would have affected the system all the time not just after a "sleep" ... you should rule out that sticking exhaust valve thing though...which means that if it goes down to the bumps with the valve unplugged it's certain that it's stuck open cos it must be closed without feed if you see what i mean...if it keeps level with the exhaust valve unplugged but goes down with it plugged it means that the management gives a deflation command when you open the door and that would be normal only if the input from the sensors at that particular moment is higher than for normal level

what you can do alsomid to let the cable of nanocom plugged in and the driver's window opened as to have acces to plug in nanocom and turn ignition on without opening the door and read the heights then go into inputs menu and watch the valve inputs while you open the door

IMO this problem of your's is quite complicated so it needs serious investigations

The problem with that theory is that when you lock the car it does the 20mm drop feature flawlessly. If valves were getting stuck, wouldn't it go all the way down when that happens?

Also, would keeping the nanocom plugged in not allow the computer to sleep? As a side I've noticed the sls doesn't function the same when I'm in the slabs menus. It's As if the nanocom overrides the slabs normal function?

It's no problem with the theory, maybe with my english or way to put things, i didnt say about VALVES getting stuck only about the EXHAUST valve

1. the 20mm drop is stopped by the system by closing the two air supply valves so even if the exhaust valve which is on the compressor is open the air stays in the bags and if in the morning the system is trying to relevel it opens the air supply valves which would not be a problem if the exhaust valve was closed but if it's stuck opened too the air leaves the bags... please read again what i explained about how the system works.

in a nutshell:
1. inflate = air supply valves open + running compressor
2. keeping air in = air supply valves closed
3. releasing air = air supply valves open + exhaust valve open

the air supply valves can be opened by the system one at a time too if only one side needs adjustment


2. i didnt say to leave nanocom plugged only the CABLE into the diagnostic socket as to be able to plug in nanoocom at the other end without opening the door and read heights and monitor valve inpouts then cos otherwise it's hard to reach the connector above the pedal through the open window