Keyfobs stopped working.

[Nevermore673]

I'm hoping someone can help me. I replaced the factory stereo with an aftermarket unit. I got the proper wiring harness which also came with a data module. It all works perfectly, however, since installing the new stereo, I have lost total function of both of my keyfobs. The power locks work with the door button, but I want my remote functionality back.
I have checked fuses and all are good.
I am also curious.. the car has 2 plugs that were plugged into the factory unit.. 1 rectangle (that plugs into the harness) , and 1 square that is no longer plugged into anything.. seems odd to me.
Please help!
Thanks
Tom

[rcktpwrd]

need more info, what year and model is your PT?

[Nevermore673]

I'm sorry.. it is a 2008 Touring model. No premium sound.

[Nevermore673]

Here is a picture of the back of the factory stereo.. it's the plug that goes into the small square that is no longer plugged into anything, and I am wondering if that is somehow the reason my key fobs don't work now.

[myckee]

Have you tried to put the old radio back in to see if your fobs work?

[Nevermore673]

No I haven't. I will try that in the next couple of days.

[Nevermore673]

Ok, hooked the factory deck back up and still had no keyfob function.. so I am at a complete loss. I had perfect function before I hooked up the new stereo. And it is not just the keyfob because neither of them work.

[rckstein]

Does the panic button (to sound the horn) work on either fob to the vehicle?

It may sound odd, but stranger things have happened, but have you checked the batteries in both fobs, it may just be possible that both batteries went bad at the same time.

Did you disconnect the battery when you installed the new stereo, or installing the stock one back in?

If not, you might try resetting the TIPM by disconnecting the negative battery terminal, disconnect the positive terminal and touching the 2 cable ends together for 90 seconds.

Then reconnect the positive and negative and see if remote functionality is restored.

If I were you, I would keep the stock stereo installed until you got the fobs back working again.

[LionPT]

Originally Posted by Nevermore673

Ok, hooked the factory deck back up and still had no keyfob function.. so I am at a complete loss. I had perfect function before I hooked up the new stereo. And it is not just the keyfob because neither of them work.

Where did you jump power from for the new stereo..??
The adapters they sell don't have a power wire.

[Nevermore673]

You have to get the actual correct harness.. not the cheap one.

https://www.amazon.com/dp/B001U3ULQO..._j1dZAbD9SG291