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Discussion Starter · #1 · (Edited)
Hi Folks -

Have a quick question on a common repair. I'm the original owner of a 2005 Honda Pilot which now has 378,XXX miles on it and going strong. I have two original remote keys, and the module (or transponder, or whatever it's called) has stopped working on one. Since the key itself is still working fine, I was planning on just replacing the internal module, part # 72147-S9V-A02

My question is this: can I replace just one of the modules and reprogram it, or do I need to replace both and reprogram at the same time?

Thanks in advance for the help!

Chris
Lockhart, Texas
 

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Hi Folks -

Have a quick question on a common repair. I'm the original owner of a 2005 Honda Pilot which now has 378,XXX miles on it and going strong. I have two original remote keys, and the module (or transponder, or whatever it's called) has stopped working on one. Since the key itself is still working fine fine, I was planning on just replacing the internal module, part # 72147-S9V-A02

My question is this: can I replace just one of the modules and reprogram it, or do I need to replace both and reprogram at the same time?

Thanks in advance for the help!

Chris
Lockhart, Texas
One
 

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Discussion Starter · #4 · (Edited)
What has stopped working ?
The ability for one of the Head keys to START the vehicle ?
or, the Remote on the key ability to open/close the doors ?
The key starts the vehicle as it should - just can't open/lock the doors or arm the alarm with the remote.

Thanks,

Chris
 

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You can get just one module, but I believe both need to be programmed to lock/unlock the doors during the same programming sequence.
 

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You can get just one module, but I believe both need to be programmed to lock/unlock the doors during the same programming sequence.
^^^
This is correct

If later you want to ADD an additional KeyFob, then all 3 will need to be re-programmed at the same time

It takes less than 3 minutes to do all this.
 

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Discussion Starter · #8 ·
Thanks for the advice, y'all ... the module lasted me 15 years so I guess I can't complain too much. Re-programming process looks simple. Ordered a new module his afternoon - an act of hopefulness that someday soon I may actually be, you know, driving places again. Ah, 2020.

Chris
 

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You can get just one module, but I believe both need to be programmed to lock/unlock the doors during the same programming sequence.
^^^
This is correct

If later you want to ADD an additional KeyFob, then all 3 will need to be re-programmed at the same time

It takes less than 3 minutes to do all this.
Get a new fob off Amazon or eBay, with or without the key, whichever is cheaper. Then reprogram all remotes together.

Here's how:

Have all remotes for the vehicle on hand. Make sure all the doors and rear hatch/trunk are closed during programming. Only need to use 1remote to get into program mode but all remotes must be programmed during the same session. Each step must be completed within 5 seconds.

1. Sit in the car with all doors/trunk tightly closed

2. Turn the key to the ON position, marked by "II" on the ignition bezel so the dash lights come on, then within 5 seconds press the "Lock" button on the remote for 1 second or so and release the button.

3. Turn the key to the OFF position, marked by "I" on the ignition bezel - dash lights go off.

4. Repeat steps 2 & 3 three more times (A total of 4 times) -- each step must be done within 5 seconds of the previous step.

5. Upon the 4th turning of the key to "ON", press the lock button on one remote, the locks will make a cycling sound (clunk), locks will NOT lock or unlock at this point, they will just make a noise. The system is now in programming mode. Do not turn key off.

6. Within 5 seconds of entering programming mode and within 5 seconds of each other, press the lock button ON EACH remote you are programming, for a second or so and release. This step needs to be completed within 10 seconds. Each time a remote button is pushed, the locks should cycle. Up to 3 remotes can be programmed.

7. Turn ignition completely off and remove the key. Step out of car and close door. The remotes should be programmed and should work. If you have a trunk/hatch release, the button for this feature needs to be held for a few seconds before the trunk/hatch will "pop".


Here's a video that might also help.


Keep trying, it eventually does work, if your fobs are good. In the end, what finally worked for me when using the method that goes from II to 0 didn't work: Going from II to I is what did it for me.
 

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Discussion Starter · #10 ·
Get a new fob off Amazon or eBay, with or without the key, whichever is cheaper. Then reprogram all remotes together.
-snip-
Thanks very much for the detailed instructions - this is very helpful! I'm waiting on the new "guts" to arrive, but will report back here as soon as I've completed the reprogramming.

Best regards,

Chris
 

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Thanks very much for the detailed instructions - this is very helpful! I'm waiting on the new "guts" to arrive, but will report back here as soon as I've completed the reprogramming.

Best regards,

Chris
Consider this if cost of key(s) programming is high.

 

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Consider this if cost of key(s) programming is high.

That's quite useful if the immobilizer chip needs (re)programming; however, I think the OP was asking about the remote fob portion only, to lock and unlock the vehicle, since the key in question still starts the vehicle.

In that case, no need to buy anything else or pay someone to reprogram those fobs, since you can do it yourself for free following the instructions I posted above. Worked for me. :)
 

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Discussion Starter · #13 ·
That's quite useful if the immobilizer chip needs (re)programming; however, I think the OP was asking about the remote fob portion only, to lock and unlock the vehicle, since the key in question still starts the vehicle.

In that case, no need to buy anything else or pay someone to reprogram those fobs, since you can do it yourself for free following the instructions I posted above. Worked for me. :)
Yep, no problem with the immobilizer chip. I'm hoping (and am confident!) that I can do this without spending any more money than I already have (around $40 for the OEM module). Part arrives monday. I'll keep y'all posted.

Also, in case I haven't mentioned it ... BEST CAR EVER. But you guys knew that already.

Best regards,

Chris
 

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Module arrived this morning. Popped it in the key fob, went through the reprogram process, and it's working like a charm. Took all of five minutes. Now that's my kind of job. ;-)

Thanks again for the help,

Chris
Once you know the secret handshake, you're in like Flynn. 🤝
 
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