Car Alarms: alarm will not reset, rx300, alarm systems

Question
Changed the battery on our rx300 and now the alarm is constant.  Have tried with the key left to right in the drivers door and no luck. It is a factory system (horn and lights) and I tried everything in the manual.  Nothing in the question and answer of this site fits.

Answer
Sorry I do apologize,
but my expertise is in after
market vehicle alarm systems.

If yours is indeed a factory system,
I suggest talking to one of the
techs in my Forum about this one.

Please go to www.INSTALLSUPPORT.com
re state this inquiry there.
I am certain my guys will be
happy to assist if possible.

I hope you find the answer/solution
to your issue.

Regards,

ALARMTEK/CARPROTECTOR.COM