If it was triggered by the code reader, you can reset it by bridging two of the pins in the OBDII connector under the dash, you need to bridge pins 4 and 14
Procedure is:
Ignition off
bridge pins
ignition on (do not start the engine)
Leave on for 30 seconds
ignition off
remove bridge
Check that lights are now extinguished.
If you don't want to do it yourself, if you are close enough to me in Basingstoke (on the mobile app, you can't see posters locations even if you have for it on your profile), pop round and I'll do it for you.
Agree with Colin re: the alarm. Could be a poor battery, but also large metallic objects left in the centre console area can play havoc with the alarm for some reason.
just done this on my 2002 gs300 and it worked a treat! had the lights on for just under a yer and could not get it sorted!
Gs300 (2002) - Vsc & Vsc Lights On
in Lexus GS 300 / Lexus GS 250 / Lexus GS 430 / Lexus 450h / Lexus GS 460 Club
Posted
just done this on my 2002 gs300 and it worked a treat! had the lights on for just under a yer and could not get it sorted!
cheers