Will not start after replacing the battery, security system?

1999 HONDA PASSPORT
200,000 MILES • 3.2L • V6 • 2WD • AUTOMATIC
Avatar
MELANIE SMALLWOOD
  • MEMBER
  • 1 POST
I replaced my battery and now my car won't start. I'm trying to reset the immobilizer or anti-theft features.
Feb 4, 2023 at 12:36 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Advertisement
Avatar
STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 54,176 POSTS
I assume the engine will not crank over; can I ask if the security light is flashing when you turn the key to crank position? If everything goes out, lights etc. The battery cables are loose or corroded here is a guide to help you fix the problem:

https://www.2carpros.com/articles/everything-goes-dead-when-engine-is-cranked

If the connections are okay and the security light is flashing please reset the system which is done by removing the negative side of the battery, with the cable loose from the negative side of the battery, hold it to the positive terminal for 1 minute this will discharge the memory capacitors in the BCM and PCM allowing the system to reboot. Then reconnect the battery. Let me know how it goes.

Feb 4, 2023 at 12:15 PM
Advertisement
Avatar
JIS001
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 3,412 POSTS
Hi, does your vehicle have the KARR alarm system? If it does, the override button is on the lower panel on the driver's side. See snapshot of instructions below. Hope this info helps. I had that issue with my wife's Honda Fit. I had to manually override with that button.
Image (Click to enlarge)
Attached Media
Feb 4, 2023 at 7:18 PM