Vendors's code:
Product code: B712-629BD
Barcode:
Code 39:
ISBN:
Select a product option:
Individual variants may differ in price
Important: Depending on the ECU type and vehicle model, not all of the options listed below may be available.
To select the correct option for your vehicle and ECU, please contact us before purchasing:
contact@auto24parts.com
1. Locked
This option is intended for professional workshops with the required specialist equipment and technical knowledge.
The ECU has been removed from a vehicle intended for recycling and still contains the immobilizer data and other information from the previous vehicle. Before it can be used in another car, it must be unlocked and then programmed using specialist automotive diagnostic equipment.
2. Unlocked
Several preparation methods may be available. The possible options depend on the ECU type, vehicle model and immobilizer system. Please contact us before purchasing, as some preparation methods are not available for every ECU.
Our electronics specialists can prepare the ECU in one of the following ways:
a) ECU with PIN code (Car Pass)
The PIN code is supplied, but programming with a suitable diagnostic tool is still required. After installing the ECU, it must be reset using the supplied PIN code and then programmed to the vehicle’s immobilizer system.
b) VIRGIN ECU
The data from the previous vehicle is removed and the ECU is restored to a clean, factory-like state. After installation, it must be programmed to the vehicle using a compatible specialist diagnostic tool. Unless another preparation method is specified in the product description, this is the standard unlocking option for most of our ECUs.
c) Plug & Play – IMMO OFF
The immobilizer function is disabled in the ECU. After installation, the engine can start without additional immobilizer programming. Please note that the vehicle will no longer have an active immobilizer function, and an immobilizer warning light or fault code may remain, depending on the vehicle model.
d) Plug & Play – Automatic Programming
After installation, the ECU automatically learns and saves the required vehicle data. No additional programming is normally required.
e) Plug & Play – 1:1 Clone
The data from your original ECU is copied to another fully functional ECU. The cloned unit is then ready for installation without additional programming.
You must send us your original ECU so that we can transfer its data to the replacement unit.
The original ECU must have working communication with the vehicle, a diagnostic tool or our programming equipment. If the required data cannot be read, a complete 1:1 clone may not be possible.
3. Complete Plug & Play Set
A complete matched set containing the ECU, immobilizer components and all other parts required to start the vehicle without additional programming. All components supplied in the set must be installed in the vehicle.
Important:
Dispatch time depends on the selected option. If an unlocked or specially prepared version is ordered, the preparation service usually requires an additional 1–2 business days.
Administratorem danych osobowych jest Auto24parts. Przetwarzamy je w celu przesłania odpowiedzi na zapytanie. Więcej informacji dotyczących przetwarzania danych osobowych znajduje się w polityce prywatności.
Price 30 euros applies shipments to 5 kg on worldwide. Above this weight, please contact us by email to check price
The shipping cost applies to this product (in the selected variant - if applicable). It may change after adding other products to the cart.
The 0281011974 / A641531991 CR3.31 number is an Ecu engine controller for Mercedes-Benz, available in locked or unlocked versions – convenient to match to the vehicle.
This is an Ecu engine controller used in selected Mercedes Benz models. The part numbers 0281011974, A641531991 and designation CR3.31 help match the correct controller to the vehicle.
The Ecu engine controller marked 0281011974 and A641531991 manages engine operation, fuel injection control and communication with other Mercedes systems.
Yes — matching numbers such as CR3.31, A641531991 and 0281011974 is the most reliable method of selecting the correct Ecu engine controller.
Not always. Controllers marked CR3.31 usually require programming or adaptation for the specific vehicle.
Available in two variants: locked Ecu engine controller and logged-out Ecu engine controller (ready for reprogramming).
The numbers 0281011974, A641531991 and CR3.31 were used in selected Mercedes Benz models. Matching by part number is the most reliable method.
Terms such as A641531991 and 0281011974 allow quick identification without guessing by year or engine configuration.
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