A faulty transmission control module (TCM) most often causes limp mode with the gearbox stuck in one gear, harsh jolts when you select D or R, erratic gear changes, flashing PRND letters and a gearbox or engine warning light. However, the same symptoms are often caused by a low gearbox oil level, a weak battery, a poor earth or a faulty sensor. To test a transmission control module, start by checking the battery and reading the fault codes with a diagnostic tool that can talk to the gearbox control unit, then check the power supply, the connector, the oil and the live data. Below we explain the symptoms, the diagnostic steps and what the most common fault codes mean.
Engine Control Unit Volkswagen Golf 1.4 Magneti Marelli IAW 4HV.AD 03C906024K
Vendors's code: 03C906024K
Product code: 915A-94930
Barcode:
Code 39:
ISBN:
406,50 zł
Price
406,50 zł
500,00 zł
Price
500,00 zł
In stock
Select a product option:
Individual variants may differ in price
product option
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.
Ask about the product
Engine Control Unit Volkswagen Golf 1.4 Magneti Marelli IAW 4HV.AD 03C906024K
Administratorem danych osobowych jest Auto24parts. Przetwarzamy je w celu przesłania odpowiedzi na zapytanie. Więcej informacji dotyczących przetwarzania danych osobowych znajduje się w polityce prywatności.
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Price 30 euros applies shipments to 5 kg on worldwide. Above this weight, please contact us by email to check price
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Looking for a 03C906024K ECU for a Golf 1.4?
We offer a used, working Magneti Marelli IAW 4HV.AD engine control unit with VW number 03C906024K and the additional marking MY211707. It comes from a Volkswagen Golf with a 1.4 petrol engine.
Engine Control Unit Volkswagen Golf 1.4 Magneti Marelli IAW 4HV.AD 03C906024K
Magneti Marelli developed the IAW 4HV.AD ECU for Volkswagen, marked with part number 03C906024K. This unit comes from a Golf with a 1.4 petrol engine. The module manages fuel injection and ignition; if it fails, it can immobilise the car completely or put it into limp mode.
ECU markings
- 03C906024K – VW part number
- MY211707 – additional number on the label (Magneti Marelli marking)
- IAW 4HV.AD – ECU type
Base your choice on the VW number with the letter K at the end – this letter indicates the software and hardware version. 03C906024 units with other letters are not always interchangeable.
Symptoms of an engine ECU fault
- the engine stalls immediately after starting or will not start at all,
- no communication with the unit in the tester,
- erratic running and loss of power with no faulty sensors,
- no activation of one of the injectors.
Start by checking the power supply, earths and the condition of the battery – low voltage can disrupt the operation of the ECU.
Locked or unlocked – which to choose?
A workshop that unlocks, programs and matches ECUs itself usually chooses the locked version – with the data and immobiliser of the previous Golf. We will prepare the unlocked version before dispatch, usually within 1–2 working days.
Which method is possible – PIN / CAR PASS, Virgin, IMMO OFF, auto programming or clone – depends on the part number, software and immobiliser. Please ask before you buy. We describe all the options on the ECU preparation options page.
Questions and answers
| What does the number MY211707 mean? |
|---|
| It is an additional marking on the label of this ECU. The most important number for matching is VW number 03C906024K. |
| Will you match the ECU to my immobiliser? |
| That depends on the unlocking method available. Send us the numbers from your ECU and we will confirm the options before you buy. |
| What condition is the ECU in? |
| Used, working, in good condition. You will find the warranty period in the product specification table. |
Email contact@auto24parts.com if you would like to confirm that the numbers match.
