Cannot disable alarm

1997 LEXUS ES 300
300,000 MILES • 3.0L • 6 CYL • 2WD • AUTOMATIC
Avatar
AR420
  • MEMBER
  • 1 POST
My neighbor is working on my car and the battery died in the process. Now upon installing a new battery, the alarm goes off every time she connects the battery. I bought the car without a key fob. Is there a solution?
Aug 6, 2019 at 9:33 PM
Advertisement
Avatar
STRAILER
  • ✓Experienced Mechanic
  • 55,684 POSTS
Yes, I would try a hard reboot of the system, which as you hold the negative battery cable against the positive battery post, this discharged the capacitors and allows the system to come back to default settings. This guide will help:

https://www.2carpros.com/articles/how-to-reset-a-security-system

Please run down this guide and report back.
Aug 8, 2019 at 4:35 AM
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle