Honda Car Forum

how to reset the immobiliser on a 1998 Honda Prelude?

Hello, This is a job for your local Honda Service Agent, I tried to get the AA to reset mine, and he damn near had the engine Cavity emptied all over the driveway, and then he advised me to contact the service department, at Hondas local showroom, I did and they sorted it for me, at the same time as a service, and I have had no problem with it since. I no longer have the Prelude. but I am taking delivery of a Civic, next month, and I am so looking forward to it, so very reliable Honda cars, good luck with yours, and I hope you are mobile soon, you have a lovely motor car there, I bet it's a joy to drive... Bye Tony M

OK, here is a better understanding of how a immobilizer works; each key has a code imprinted on it, no battery of any type just a random code. When you go to start the car the immobilizer computer sends a signal to the key. If the signal it receives back from the key matches one of the 5 keys it keeps in its memory, it sends a "OK start" message to the PCM starting the car. If it doesn't see the "OK start" signal it doesn't start and the green key light in the dash flashes. In short there is no way to reset it. Try another key. If not, there is a way to bypass it shortly to get the car to a Honda dealership for reprogramming of a key or key replacement. Your Prelude may also have a problem with one of these components. It will need to be hooked up to a Honda scan tool and checked for immobilizer codes.Let me know if you have any questions. I'm a 6 year factory Honda tec. I will try and answer all I can.Here is how to use the "pcm brake code" You weill need to call your local dealership and give them you vin # to get the code.To start the engine, follow this procedure:1. Cut a temporary key using the key code and anon-transponder key blank.2. Turn the ignition switch ON (II) with thetemporary key.3. Enter the first digit of the immobilizer brake codeby pressing and releasing the e-brake pedal the samenumber of times as the digit. For example, if thefirst digit is 4, press and release the e-brake pedal 4 times.4. Turn the ignition switch to Lock (0) and then backON (II).5. Repeat steps 3 and 4 to enter the second, third,fourth, and fifth digits of the code. You have up to30 seconds to enter each digit.6. After you enter the fifth digit, the immobilizerindicator on the dash will blink five times,meaning you can now start the engine with thetemporary key.While the engine is running, the immobilizerindicator will stay on. If the engine isn’t startedwithin 10 minutes, you’ll have to reenter theimmobilizer brake code. You’ll also have to reenterthe code if the engine is shut off for more than 10minutes.This also workes for any Honda immobilizer system. However you need to use the brake pedal. Only preludes you used the e-brake.