Question about 2004 Honda Accord

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Problem in programing new key

I tried making a new duplicate for my car key, i discovered the ecu would only accept one key even after repeatedly programing it with my t code programmer. it stores one and wont reconise the other. its my ECU faulty, or do i require any thing.

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Some ECU's will only allow a set maximum number of keys to be coded to them. You may need to erase all the key codes from the memory and start again from scratch. Not sure if your t code programmer will do that, not something I'm familiar with, but it may need to go to a Honda dealer for erase and recode. Not something that should take very long or be expensive. Some locksmiths do car key programming now as well and often cheaper than dealer prices, you could try around some in your area.

Posted on Nov 01, 2008


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Posted on Jan 02, 2017


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Why wont my dodge neon allow me to gain access to my ecu to program my new key, so my car will crank or start.

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YOU MUST HAVE TWO WORKING KEYS or the controller will shut off the engine.

The locksmith should have changed the pins in the new lock to match your original key. The controller would have recognized it and let you drive the car. So, you either need to call the locksmith back to fit the old key to the new ignition cylinder, or get it to a dealer so they can instruct the brain to accept the new key. And get two keys while you are at it as a back up.

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Lost my remote on my 02 jeep liberty and need to

the key fob? or radio remove or what?
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the operators manual covers this , under car keys.
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RKE its called, (makes looking fact more easy)
is this car with SKIS Immoblizer option> yes./no
if yes.
im reading your operators guide now.
lost that too>?
Duplication of keys may
be performed at an authorized dealer (or locksmiths) or by using the
Customer Key Programming procedure.

DIY, takes 1 key , good, called a valid key, in the below text.
You can program new keys to the system if you have two
valid keys by doing the following:
1. Cut the additional Sentry Key Transponder blank(s) to
match the ignition switch lock cylinder key code.
2. Insert the first valid key into the ignition switch and
turn the ignition switch ON for at least 3 seconds but no
longer than 15 seconds. Turn the ignition switch OFF and
remove the first key.
3. Insert the second valid key and turn the ignition
switch ON within 15 seconds. After ten seconds, a chime
will sound and the SKIS indicator light will begin to
flash. Turn the ignition switch OFF and remove the
second key.
4. Insert a blank Sentry Key into the ignition switch and
turn the ignition switch ON within 60 seconds. After 10
seconds, a single chime will sound. The SKIS indicator
light will stop flashing, turn on for 3 seconds; then turn
The new Sentry Key has been programmed. Repeat this
process to program up to a total of 8 keys.

did i guess right, the Key FOB RKE,
remove key entry fob.?

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1. Start with key out of ignition, drivers door is open all others closed and
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2. Insert key into the ignition (Do NOT Turn) and Pull key out.
3. Perform these steps within 40 seconds.
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4. Perform these steps within 40 seconds.
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6. Perform these steps within 40 seconds.
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Go to dealer and bring your proof of id and paper work for vehicle. There maybe an additional programing fee, this is normal protocol. Or try a local locksmith but make sure you tell them over the phone your vehicle info.

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what do you mean a new key?
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