Hi, Im new here, but my family has had the 92 LS 400 for about 3 years, we bought it used. But, now our LS 400 is starting to wear down. The LS 400 will not start if it is idled for about 2 days without starting it. You need to drive it continously or else you'll need to jump start it. (what could be causing it, a new battery?), the air conditioner is no longer useable.. it just blows out air the temperature outside is. And the casing for the electronics around the door unlock/lock, up/down, is coming up and moving the windows up goes very slow. And the little keychain to put the alarm on the lexus and to lock it no longer activates the lock/alarm. But the red button on the key-chain is lighting up, signifying the battery in the keychain is working. Maybe there is a button that deactivates the keychain thingy. I was messing with some of the buttons a while back to see what they do :). Can i have some answers on some of these that i can fix on my own? I dont want to spend too much money at the dealership to service it. I would just like a few answers on the Starting up the car, and key-chain(activates alarm and locks/unlocks car). Thank you