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Radio and Navigation system anti theft lock

Tiny
IVYKOMYO
  • MEMBER
  • 2009 HONDA FIT
  • 146,789 MILES
I have a problem. After changing car battery, it is appear Anti theft lock.
Saturday, April 20th, 2019 AT 12:10 AM

5 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Yep, when the battery is replaced it can trigger the security system to be engaged. here is a guide to help you reset the system:

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

Please run down this guide and report back.

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Monday, April 22nd, 2019 AT 3:52 PM
Tiny
IVYKOMYO
  • MEMBER
  • 3 POSTS
My problem is radio and navigation system anti theft lock.
Only car radio and TV was not work.
There is no alarm and no other problem.
I can drive anywhere.
Everything is okay expect TV, DVD and navigation.
Japanese words appear, and it can touch characters (eng/jap) and numbers for typing anti theft code.
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Tuesday, April 23rd, 2019 AT 4:53 AM
Tiny
KEN L
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  • 48,363 POSTS
Opps, you lost some of the programming. Did the battery cables get reversed or was the battery jumped backwards? Sometimes a voltage spike from connecting the battery cables can cause this as well. Lets run the codes to see what comes up. here is a guide:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please run down this guide and report back.
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Tuesday, April 23rd, 2019 AT 11:24 AM
Tiny
IVYKOMYO
  • MEMBER
  • 3 POSTS
That isn't my problem.
My car is still running. There is no problem except radio, navigation system.
Not for engine. No alarm, no check light.
I mean radio antithef lock.
Can't use radio, dvd player, map and back camera.
Thanks for your answer.
We appreciated that.
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Monday, July 22nd, 2019 AT 4:55 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
It looks like the unit shorted out after charging the battery I am wondering if the voltage was too high causing the issue. Did you try installing the code? Let check the fuses to make sure we are all good there. here is a guide and the fuse locations:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

If the fuses are okay here is how you can remove the radio/navigation for repair. Check out the diagrams (below). Please let us know what happens.

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Monday, July 22nd, 2019 AT 10:51 AM

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