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Security system

Tiny
TAMMY WITHROW
  • MEMBER
  • 2001 JEEP GRAND CHEROKEE
  • 4.0L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 165,000 MILES
Last night anti-key popped on. Now it will run for five seconds​ then turn off. I already disconnected negative cable. I also changed the security fuse. And still have same problem. What more can I do?
Wednesday, June 28th, 2017 AT 8:19 AM

1 Reply

Tiny
STEVE W.
  • MECHANIC
  • 13,572 POSTS
That description fits the anti-theft module not being able to read the key. There are a few pieces that control that. Most are not DIY friendly because you need a scan tool to be able to "see" what the system is doing.
It is a fairly common problem but without the scan tool you could swap some costly parts and still not repair it.
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Wednesday, June 28th, 2017 AT 8:48 AM

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