Anti theft

Tiny
ALLIECAT
  • MEMBER
  • 2001 JEEP GRAND CHEROKEE
  • 4.0L
  • V6
  • 4WD
  • AUTOMATIC
  • 138,000 MILES
My vehicle will not start, the anti theft light stays on. I did the door thing turning the key back and forth, after that the vehicle will start but is sluggish and will not stay running. The anti theft light comes back on. Can someone please help? Replaced computer.
Tuesday, February 20th, 2018 AT 3:47 PM

1 Reply

Tiny
STEVE W.
  • MECHANIC
  • 14,081 POSTS
Did you replace the computer before or after this started? If before did you reprogram it to match your vehicle and the keys you have? If after and this was the reason why, you still need to program in the keys you have as they will not match the information stored in the "new" ECM but it also sounds like you will need to use a good scan tool to interrogate the SKIM module as the light staying on indicates a fault in the system, either in the transponder, antenna ring or communication lines. That cannot be tested without a dealer level scan tool.
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Thursday, February 22nd, 2018 AT 12:34 AM

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