I would say YES
yes with anti-thef on your car
where to locate the factory alarm fuse in my lexus ls 400 1990
With difficulty.
How to disable the security alarm on a 1994 lexius ls 400
yes it did
Some alarms systems have a protection function which will prevent starting the engine is somebody tried disconnect the battery and connect it again. Also what might happen is that your alarm system doesn't have memory in the case if you disconnect the battery. Thus, if you do disconnect the battery it will reset the alarm system to the default factory settings. By default, the alarm system will block starting the engine.
Car alarm in Lexus ES300 started going off at random when car was parked, not running. I changed the key fob battery (flat watch battery) with a new battery and it fixed the problem.
disconnect the battery
Unlock the drivers side door with the key and this will disable the alarm. Lock it with the key when you leave and the alarm will turn back on. Assuming factory alarm with no modifications.
The key battery for the ls400 is PN# br1216 www.lextechautomotivellc.com
unhook the battery for about 20 sec and the alarm will reset itself.
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