Question about 2003 Jeep Grand Cherokee

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I need a computer unit replaced on a V6 '03 Jeep Grand Cherokee. The dealership quote is $850. Do I have any cheaper options?? One mechanic said he thought only the dealership could do a computer replacement.

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  • Richard Scordino May 11, 2010

    ther computer learns the parameters of the sensors...unless they are all new, they have slightly different values than new or another used one would.

  • Richard Scordino May 11, 2010

    I'm fairly certain, but not positive on this so I won't submit it as a "fix" but, if you get yourself a computer from a scrapyard (far cheaper than new, but make sure it's from a wreck, so it's more likely to have been scrapped because of that and not an engine problem) You can install it, then to clear, remove the positive battery cable on the battery and touch it to the negative side. If you have a security system, re-set it, then start the car. The computer will re-set itself and re-learn what it's operating parameters are and if that was the actual problem and not a mis-diagnosis, you should be good to go.

  • Ned C Cook
    Ned C Cook May 11, 2010

    The problem is the programming. Why must it be changed?

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  • Jeep Master
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AS FAR AS I KNOW THE DEALER IS ONLY ABLE TO PROGRAM THE SECURITY CODE FROM THE SENTRY KEY MODULE TO THE ENGINE CONTROLLER AFTER REPLACEMENT OF ENGINE CONTROLLER..YOU CANNOT TAKE AN ENGINE CONTROLLER FROM ANOTHER VEHICLE AND PUT IT ON YOUR VEHICLE..THE SECURITY SYSTEM WILL NOT RECOGNIZE THE SECURITY CODE IN USED CONTROLLER

Posted on Jul 23, 2009

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