Today, after spending a few hours cleaning our 2004 X5 I finally got around to fixing the intermittent brake light/rear light problem that is common on the X5, but which BMW aren't interested in. I used the soldering technique to build up the contact point, the same technique I used on the other brake light a few years ago, and which seems to have fixed the issue.
While testing the lights by turning on the ignition and turning the light switch on/off and pressing the brake pedal, I noticed the SELFLEVEL SUSP.INACT message popped up on the dash as I was turning the ignition off. I didn't think much of it at the time until my wife pointed out that the back of the car was very high in the air. Got the manual out and read about the self leveling suspension, but no suggestions about what to do when it is set high. I don't have a button to manually adjust the suspension, I assume this is an option, so there doesn't appear to be anything I can do to fix this thing! I took it for a short run in the hope it would sort itself out. The SELFLEVEL SUSP.INACT message is no longer displaying, so I assume the car isn't aware of an issue, however, nothing I do will cause the car to "self level" and it is incredibly bouncing to drive - uncomfortably so. According to the manual "The suspension levels are adjusted manually by pressing the button (well we don't have one of these), or automatically at certain speeds". I got upto 40 mph, but nothing changed and I dare not go any faster due to the car bouncing around.
This couldn't have happened at a worse time as we were planning to visit my son in Newcastle tomorrow; a 3 hour round trip and the following weekend we have a wedding in Milton Keynes; a 5 hour round trip.
Does anyone have any idea what might have caused this? Is it likely to be an electrical or mechanical issue? I ask, because today I used a snow foam lance and a power washer to clean the car - the first time I have done this. There was a LOT of water being sprayed around! Is it possible that the electrics for the self leveling suspension have been affected?
Thanks.