MilkoLS400

Im not sure how to read this manual.. But i'm already stuck at (a) (2) as the light does not come up directly.. i don't see how to proceed when this condition already not met.. its the first step where the conditions aren't met.. If I continue to read in this first part of the pre/check is see: "Even though the height control SW is pushed to the HIGH side, the height control indicator light do not light up" Is this a condition set after the (a)(2) condition??? If I would believe its directing to DI303 it would mean that jacking up the car with running engine distroyed either the switch or the ECU.. both sound pretty much impossible to me.. A pump or fuse OK. but not a switch in the cabin. ECU does sound far from the source as well but might be the case.. Can anyone help me with how to read this manual?? What should I do when (a)(2) condition is already not met???

The 20A fuse is OK. I will check the 40A H/CTRL. Didn't check that one yet.. But the light does not even come up when switching ignition to "ON". No light at all..So also no flashing.. Ok.. Just checked the 40A H/CTRL. Seems OK..

Yes.. Only answers there are off non informative kind. One said most ls400's in UK dont have air suspension. an other guy greeted me because he is dutch too. Ich kann auch versuchen auf Deutsch zu schreiben.. Die Niederlanden hat kein eigenes LS400 Forum. Also.. Morgen werde ich zuerst die schritte aus DI303 versuchen.. Hoffentlich komme ich überall drann.. Ich weiss ja nicht who die stecker sich befinden whorüber in DI303 geschrieben wird.. Aber ich werde mal rein schauen. Hoffentlich kriege ich die mitte console einfach aus einander um den switsch stecker zu finden..

Yes. if its the correct one.. Ill try to find all connections tomorrow.. I find it strange a ecu or switch would die becourse of jacking up.. I mean.. ECU can be reset right?? and switch is hardware that just switches a voltage or current.. how can they break down due to this?? I mean a compressor can overload and burn out. or a fuse can blow.. but this... so weird.

DI303=Height Control Switch Circuit But i'm already kind of stuck in the pre-check DI245. Since the light will not come on at all. not even 2 sec. when turning ignition on. When I turn ignition to "ON" nothing happens. I also can not hear anything buzzing when i listen from outside.. No compressor noises at al. only the soft humm of the air fan. also when i put the switch on High.. I hear nothing. How can a one minute jackup with running engine cause this.. (I never thought a car this expensive could have such a self destructing quality.) Oh.. There is a strange type error in the manual that came with the car as well. It says when jacking up the ignition key should be set to "ON" But that should NOT be.. Weird. Haha..

Hi Tom. Thanx for the suggestions. I have started my car several times. No result.. What is very strange is that the entire"Hi" Light on the dashboard will never light up.. Not even when starting my car. According to the manual the light should at least light up 2 seconds when i turn the contact to "ON" .. It would be a strange coincidence that this indicator light would burn out on exactly the same moment the air suspension stops working.. Anyhow.. No level changes when switching low or high. also no indicators.. The car is drivable.. The position doesn't change at all..Ill check the link you send. Its allot of information. I hope ill find my way through it. ;-) I now seem to be at DI303 in the manual. Since the pre check says if the light does not come up at all it diverts to DI303. However.. In the first part of the precheck it says the light should come up: (a) Check the indicator light. (1) Turn ignition switch ON. (2) Check that height control indicator lights come on immediately. This very first step is already not the case. Does it mean the pre check already failed? or does it mean I should continue to DI303.. Hmm. never done this.. Never owned a car that self destructs when jacked up as well. Im used to my old TVR when it comes to electrical stuff.. Only need a multimeter and one simple shematic. Haha.. Thanx anyway.. Ill keep trying.

I have a strange problem with my air suspension on my 1999 LS400. When I was changing my break pads in the rear I jacked up the car. The break wear indicator needed to be repaired so I soldered it together again and put it back in. To check if the break wear warning light would now not come up I started the engine for maybe one minute. I realized afterwards I should not have started the engine while jacked up due to air suspension controller settings going all bizar. But.. now the air suspension light is not working at all.. If I set it on high or low nothing changes. The car is now quite high in front and quite low in the rear. It is still driveble and feels pretty much the same but it looks a bit stupid. I disconnected the battery for 10 minutes and started the car again to have all systems setting up and resetting all. Also checked the fuse of the air suspension. It didn't change anything.. Hi or low setting no lights switch on or off. Also no blinking light or other errors in the display.. Is there any other way to reset the air suspension? Anyone had the same problem? Any solution s welcome. Anyone recognizes this problem?