RKE Problems
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Cadillac Seville / Cadillac Eldorado Forum Discussion, RKE Problems in Past Cadillac Vehicle Discussion; Well the other day, my Key Fob quit functioning, so I took it to the dealer and had it tested. ...
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    99esteees's Avatar
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    RKE Problems

    Well the other day, my Key Fob quit functioning, so I took it to the dealer and had it tested. While testing, they broke they case and determined it was bad. Thought they might have just used that as an excuse since they broke the plastic. Either way, I ordered a new one and went to have it programmed today.

    They told me that when they would program it, it wouldnt continue to recognize the key fob. They stated that it must be a bad RKE Module. Now I'm no strangers to cars at all. I don't see the possibility of the keypad AND the rke module going out at the same time. I am thinking they just arent programming it right. Any opinions? Will that module throw a code? I'm trying to find the procedure for pulling codes on a 99 STS right now.

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    Ranger's Avatar
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    Re: RKE Problems

    I would think it would. Maybe the module went and the fob was good all along. If you have not found the proceedure for pulling code yet, search for "codes" and look for a post by JimD. I should store that damn thing.

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    99esteees's Avatar
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    Re: RKE Problems

    I managed to get the codes pulled thanks to Dadillac.

    Is it common at all for these modules to go bad? I only have 80k on the car. The dealer also said it would be about 5-600. I figured IF it comes to that, I could find it much cheaper on gmpartsdirect. Anyone else had to replace it?

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    Beefmalone is offline Cadillac Owners Member
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    Re: RKE Problems

    It wouldn't hurt to try to program it yourself and see if it works. I don't know about Caddys, but every other GM vehicle has a quick way to easily program fobs

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    Re: RKE Problems

    Quote Originally Posted by Beefmalone
    It wouldn't hurt to try to program it yourself and see if it works. I don't know about Caddys, but every other GM vehicle has a quick way to easily program fobs
    I took it to another dealer who said the same thing. The tech2 scan tool is saying it programmed successfully, but the car isnt recognizing it. I'm dreading the outcome of the diagnostic Tuesday.

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    Re: RKE Problems

    There was a thread on here about how to program it yourself, not too long ago... I'm not at home, so I don't have it, but I saved it to my computer.... but there is a way, I'm pretty sure.

    Now, this is nothing but speculation, but I did run into this problem with my Corvette, and what it ended up was, the new FOB they gave me was not the right one. The outside looked the same, but whatever is inside was different.

    That car was a 2000, and for that particular car, 2000 was 1 kind of FOB, 1999 was a different one, and 2001 was different again.

    These kind of problems will drive you insane, so take a deep breath.... then make sure you have the right FOB, make sure the new FOB is actually transmitting..... you have to step-by-step these things, with a lot of patience.

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    Re: RKE Problems

    Quote Originally Posted by 99esteees
    I took it to another dealer who said the same thing. The tech2 scan tool is saying it programmed successfully, but the car isnt recognizing it. I'm dreading the outcome of the diagnostic Tuesday.

    On one hand the RKE is quite simple, yet on the other hand it is a little more complex but here it is in a nutshell.

    The RKE is short for Remote Keyless Entery.
    How does it work?...Simple!
    There is a fixed frequency range that the receiver module can recognize, period.
    The receiver module (RKE) will in turn communicate with the UTDM universal theft deterrant module, then with the PASSkey module. This is where there is a lot of confusion and complexity.

    The fob communicates through all of these modules while the ignition key comminicates through the PASSkey module only.

    In your particular case there may be nothing wrong with PASSkey at all. The problem may be within the other two modules or in a data cable linking them together.

    A dealership with the Tech2 tool can troubleshoot any one or all of the modules. Why they would try to reprogram the PASSkey and drop the ball is beyond me.

    If none of the original ignition keys will start the car, then the dealership can use the Tech2 tool to find the problem. This is not rocket science.

    If only the fob is not recognized, it makes the diagnostic a little easier.

    Bottom line, you have been jerked around long enough. It is time for the dealership to fix the problem and buy you lunch as well.

    Just my 2¢

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    Re: RKE Problems

    Thanks for the info TexasSeville. I just got back from their joke of a diagnostic. They claim that there was an internal RKE Module failure, and it needs to be replaced. They also claim that there could be more to it. I'm doubting they really honestly know where the exact problem lies, but I told them I would order a RKE Module cheaper online, and install it myself. Do I need an exact part number for gmpartsdirect, or can I do a search for what I'm needing? Thanks.

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