Originally Posted by kuntz
when i push the button to change the height, the air pump doesn't run.
Initially the air pump was starting automatically at the ignition, now i don't hear the noise of the pump starting. The air pump doesn't start.
Check your fuses. Sorry, I don't know which one is for the air suspension pump, but it should be in the owner's manual. Once you have identified it, pull it out and test it with an ohmmeter -- sometimes they're bad but still look good, and removing it will clean the contacts.
Doesn't look like Lexus has any dealers in Ethiopia. A google search came up with a site identified by IP address only, and there's no way I'm clicking on that... But a Toyota dealer might be helpful, since some of the Land Cruisers have air suspension.