keyless control module-where is it? - 8th Generation Honda Civic Forum
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Old 05-12-2017, 03:55 PM   #1 (permalink)
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sanpablo just put it into 1st gear on 8thcivic
keyless control module-where is it?

Hi,
Son's 2008 Civic EX sedan. Key fobs stopped working.
Dealership says keyless control module needs to be replaced.
Not in stock, they are going to order it. What I was thinking was going to the
local wrecking yard and putting it in myself. Assume the dealership will have to
reprogram fobs? What do you think? Where is it under the dash?
Any help would be appreciated. Thanks

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Old 05-12-2017, 04:31 PM   #2 (permalink)
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BlurpleFG1 just put it into 1st gear on 8thcivic
The immobilizer and keyless entry module is located on top of the ignition switch.

You can use a salvage part but it has to be programmed to the car before will start with the key. They'll use the HDS to complete the 'replace immobi unit' procedure. Make sure you have all keys with you.

...there is a way to start the car to get it to the dealer for programming but it's VIN specific and needs to come from the dealer.

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Old 05-19-2017, 11:13 AM   #3 (permalink)
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sanpablo just put it into 1st gear on 8thcivic
Car starts fine, no problem with key immobilizer. Just the key fobs for door locks
are no longer working. Dealer said module is under the dash somewhere?
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Old 05-19-2017, 12:30 PM   #4 (permalink)
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Are you sure the key fobs just don't work? If not I would figure out where the module is and find one at the junkyard. They are definitely not a hot commodity at the salvage yard.

I will do some research on where it is.
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Old 05-19-2017, 03:30 PM   #5 (permalink)
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I have to agree with FunanaS, does the LED on the FOB light up when the lock/unlock buttons are pressed? If it does not, go buy a CR1616 coin cell and replace the battery in the key fob.
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Old 05-19-2017, 07:48 PM   #6 (permalink)
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sanpablo just put it into 1st gear on 8thcivic
I have 3 key fobs, red light on all 3 light up well. Dealership
is sure it is the keyless control module. I would like to replace
it myself if I can, will save a bundle :-) even if they charge $90
to reprogram keyfobs.
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Old 05-19-2017, 09:29 PM   #7 (permalink)
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Quote:
Originally Posted by sanpablo View Post
I have 3 key fobs, red light on all 3 light up well. Dealership
is sure it is the keyless control module. I would like to replace
it myself if I can, will save a bundle :-) even if they charge $90
to reprogram keyfobs.
8th gen Civics don't have a separate keyless control module.

What's the code your dealer found that makes them say the module needs replacing?

Because you're only having a problem with the keyless entry....

B1905 is a B can code for loss of communication between the immobilizer/keyless module and the MICU/interior fuse block.

A loose pin at the immobilizer/keyless module or the MICU could also be the cause.

On the immobilizer/keyless module there's a 7 pin connector. Pin 4 (pink wire) is the B can line. Don't confuse it with pin 6 which is also pink, it's for the immobilizer.

On the back of the MICU is connector Q. It's a 16 pin connector in the middle row of connectors. There's a pink wire there that's also the B can line. I'm sorry, I can't remember off the top of my head which pin number it is and I don't have access to my schematics.
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Old 05-19-2017, 09:32 PM   #8 (permalink)
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Short answer you can change the part yourself, BUT the car will no longer start.

As BlurpleFG1 mentioned the remote features are built into the same module that enables or disables the ignition to the car (the immobilizer). If you buy a new one you certainly can install it on your own but the new module will not recognize any of the keys, the FOBs or the car's own ECU/PCM and MICU units.

Brief outline of what is required:
Remove negative terminal cable at battery
Remove lower dash cover, remove upper steering wheel cover, lower steering wheel screws, and lower steering wheel cover. Unplug the immobilizer connector and the key-in ignition switch connector* (located around the ignition key hole area), remove the screws for both units, remove units and separate the key-in switch from the immobilizer. Installation is the reverse. (*on cars with an automatic transmission there is a third connector on the ignition unit which connects to the parking lockout solenoid.)

If you go this route you will have to ask the dealer if they will do that for you (register the immobilizer to the ECU/PCM & MICU) and at what cost, if you buy the part from them they might be more co-operative. But again while the part is easy to install, you need access to the diagnostic software the dealer has in order to set up the new module and program the keys, if you don't your car will not move under its own power. You would literally have to install it right out of the dealers' maintenance bay and push the car inside for them to do the work.

You might have to find one hell of a good humoured service manager and service techs to go along with this sort of thing.
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Old 05-20-2017, 09:34 PM   #9 (permalink)
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sanpablo just put it into 1st gear on 8thcivic
OK,
That's what I thought might be needed. I will have to let the dealership
fix the problem, thanks for all the help guys.
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