I have enjoyed my 1999 528iT for 8 years now. Have almost doubled the km on it since I bought it. It was the only 5 series wagon available when I needed a vehicle, so I took a bus to view and test and I knew I would be driving it home. These E39s are very user friendly. I am sure many E9/E3 owners have experienced this model. Lately, with mileage piling up, I was having trouble keeping up with the dashboard warning lights. But I was winning. Earlier this week I did an oil change, jacked the front up, did the job, put car back down on its wheels.....but the rear end sank.
. I got it back up in the air, examined all components to the self-levelling suspension, sensors, airbags, compressor, and could not get a reaction. Car back down on the ground. There is sat for the rest of the day. And the entire next day. Finally, the following morning, I had an idea and expressed it out loud as I was looking at the sad sight of this wagon sitting almost on the floor. I indicated that if it would only get its act together, I would finally haul away the Euro E23 that was occupying the last covered parking on our farm and it could park there while I contemplated its future.. I mean it looked so depressing like that. Went out to my shop for about 15 minutes, came back to the garage and my car had sat right back up and looked as if nothing had ever happened!. Drove it for the next 2 days and all was well. 
Told my wife this story and we have now agreed to call this E39iT, the car that can repair itself : "Christine"

Told my wife this story and we have now agreed to call this E39iT, the car that can repair itself : "Christine"