From 1995 and onwards, Opel/Vauxhall vehicles are factory installed with an immobilizer. The Immobilizer-I system can be found in Astra-F, Corsa-B, Omega-B, Vectra-B. The Immobilizer-II system can be found in Astra-G, Corsa-C, Omega-B, Vectra-B, Zafira, Meriva. With cheap OPCOM Scanner you can perform various immobilizer related operation. Below is a guide on reset MY 2001 Astra-G, Engine Z 16 XE immobilizer.
Prepare:
Any immobilizer-related operation requires a security code, which can be found in the Car Pass. You should get the Car Pass from the dealer, or the previous owner, along with all the vehicle papers (owner manual, service book, etc.) It contains the VIN, security code, the engine type, radio code, etc. The security code has four digits, and it only contain numbers, from 0 to 9.
If you do not have the Car Pass, you should visit the dealer, where you can request a new Car Pass. First, they will verify your papers, and if everything is all right, you’ll get a new Car Pass. It costs you some money, but at least you will get the security code.
How to:
First, hook up OPCOM to your car and laptop, you can easily check that the vehicle is immobilizer equipped. Please look in the engine ECU measuring blocks, where you’ll find the answer.
As you can see, Immobilizer Function Programmed = Yes
When you open up the Immobilizer, you can see the following:
You can easily verify the correct operation, or the state of the Immobilizer, please click on the [Measuring Blocks] button.
For the immobilizer system, you can program up to five keys.
On this example, you can see, that only one key is programmed.
The immobilizer and the Engine ECU is connected together via a W-Line.
(W comes from a german word, WegfahrSperre=Immobilizer)
The security wait time is also important, because when a wrong security code has been entered, the system will lock up itself, for some time. In that case, you have to wait, and try again only, if the Security Wait Time is inactive here. Possible values can be anything from 10 seconds, to 21 hours! If you somehow managed to create a long Security wait time, please connect a battery charger to the car, and leave the ignition on.
Possible Security Wait Times intervals: (hh:mm:ss)
00:00:10, 00:10:00, 00:20:00, 00:40:00
01:20:00, 02:40:00, 05:20:00, 10:40:00
21:20:00
(Yes! 21 hours, 20 minutes can be the longest one here :( )
Under the [Special Functions], you can
- Read ECU Identification
- Reset Immobilizer
- Reset Engine ECU
- Erase Transponder Keys (all)
The Read ECU Identification button is not grayed out. This function does not require any security code, and you can read out the vehicle VIN, and the MKN for identification purposes. You’ll need the VIN, and the MKN, when you order new keys to the car.
First, you have to enter the Security code, to enable the buttons.
When a correct security code has been entered, all the options will be available.
When a wrong security code has been entered, the program notifies you, and all the relevant
options will be grayed out.
So, let us see each function in details:
This function will set back the immobilizer ECU to its factory default state. Prior to replace,
you have to reset the immobilizer back to its factory default state. In this way, you can install
it into another car. This will also erase all transponder keys. Please note, that after using this
function, you won’t be able to start the engine.
After the reset is done, you can verify in the measuring blocks, that all key entries erased
successfully.
Important:
In a factory default state, the immobilizer ECU will accept ANY secret code.
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