S2000 Under The Hood S2000 Technical and Mechanical discussions.

Key coded to ECU

 
Old 11-07-2009, 01:57 PM
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Default Key coded to ECU

I had to put a new ignition in my 04. the ecu wont recognize the key. Do i have to have the car towed to the dealer to get the ecu matched to the key or can i bring the key and ecu to the dealer?
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Old 11-07-2009, 10:03 PM
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Old 11-08-2009, 05:11 AM
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Originally Posted by jeggy,Nov 7 2009, 11:03 PM
So i can just bring vin, keys and ecu?
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Old 11-08-2009, 06:05 AM
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i believe youll need to bring in registration stating that the vin belonging to the car in question is actually yours not someone elses. i believe that if you didnt have to prove the vin to that car was yours, that would mean the dealership would actually unknowingly be giving a thief a key to someone elses car. please if im wrong correct me but the dealership i used to work for used to make customers bring in registration for any type of work that involved reprogramming.
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Old 11-08-2009, 06:07 AM
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You need to take them the car.
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Old 11-08-2009, 06:10 AM
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who woulda thunk it?
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Old 11-08-2009, 07:21 AM
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Originally Posted by Slows2k,Nov 8 2009, 07:07 AM
You need to take them the car.
Thanks. i was hoping not to have to pay to tow the car in
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Old 11-09-2009, 06:30 AM
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Originally Posted by Blacknot,Nov 8 2009, 08:21 AM
Thanks. i was hoping not to have to pay to tow the car in
Well this is interesting for me as I have a motor, trans, wire harness, ecu, pump from 1 car on the floor and an ignition switch from another car. Unfortunately the guy had already sold the original ignition switch from the crashed car before I bought all the other parts.

I would hate to throw all that stuff in a pick up truck and haul it to the dealer for a reprogram. I have valid reciepts from the purchases...

Anyway this explains why I couldn't get the motor to start yesterday. The starter works fine but no power to the pump so it must be disabled.

Any ideas or do I beg the dealer? It sure would be easier to take the harness, switch and ecu to the dealer and not the motor.
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Old 11-09-2009, 12:53 PM
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You have to have the car to program a key. It can not be done with just the parts.
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Old 11-10-2009, 04:31 AM
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Originally Posted by Slows2k,Nov 9 2009, 01:53 PM
You have to have the car to program a key. It can not be done with just the parts.
The car was totaled and parted out and the body sent to the crusher. Unfortunately this happens to many of these cars but at least there are left over parts to keep current S2000s running if you blow a motor. I'm sure a lot of people can chime in here.

I'm not sure what having the car to have it reporgrammed has to do with the computer, immobilizer, the keys, ignition switch and wire harness unless part of the immobilizer is hooked to some body sensors. Anyway I have everything except the body of course and I am taking the whole pile to the dealer to let them sort it out. It should be a simple reprogram since I have all the parts including the VIN# and a proper bill of sale.

I have read many pages in this forum about people trying to defeat the immobilizer which makes no sense to me if you are running a stock system. It would be good to explain the exact parts (right keys etc.) needed to start a stock system if you know that.

There should be no secrets if you want to start a car using the stock immobilizer.
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