Never had Hydro - would never want it, but from recall the EUROs had full height available. I suspect all the way in is normal, one stop out is high and all the way out is full up for unusual circumstances.
inside the car and to the left of the steering wheel? You're not confusing this for the Euro headlight adjuster wheel, are you? Post pictures as I never saw a hydropneumatic controller before.
Here is the picture. it is not for the headlights. it controls or sets the suspension.
anyway, this car has the one of the smoothest rides I have ever experienced. I'd never rule out the hydropneumatic suspension. I bought the car with the suspension rebuilt.
Yes, you pull it out to raise the car. You pull it once, it raies the car like 4" and you are not supposed to drive any faster than 50mph that way. You pull it once more (farther out) and it locks the car in the raised position for service. If you ever put your car on a lift, or take it in for service you need to make sure they know that the knob needs to be all the way out. If you dont, the weight of the wheels will pull down on your hydromat struts, and push all the expensive oil out of your system. So, pull once to raise your car to clear snow or speedbumps, and pull it out all the way for service. Before going into service, i always leave the knob pushed all the way in, wait for the car to rise to normal height, then pull once, wait for it to rise to the "high" position, then wait, then pull it all the way, and wait again before putting it on the lift. Better safe than needing 3 liters of $20/L oil.
Hans
i confirm : i have the same button on my 560 SEL with self-leveling piloted suspension. But i have an another button on the center "console" for 2 program sport or confort.
Here's what looks like a fully-optioned Euro 500 on ebay. It has the hydropneumatic option, reclining rear seats, and tons of other things. Pretty cheap on ebay so far... might be worth to "restore" this one unlike some other junk models members are trying to restore.
lol.. could have sworn the link was in there.
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=4543726592&category=6332&sspagename=WDVW
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