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, Skoda 1.4 Magneti Marelli IAW 4HV.S 03C906024 6160135903
Vendors's code: 6160135903
Product code: IAW4HVS
Barcode:
Code 39:
ISBN:
487,80 zł
Price
487,80 zł
600,00 zł
Price
600,00 zł
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, Skoda 1.4 Magneti Marelli IAW 4HV.S 03C906024 6160135903
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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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Where on the 03C906024 ECU is the number 61601.359.03?
The Marelli number is on the unit's label, next to the VW number and the IAW 4HV.S designation. This used ECU in working order comes from a 2006 vehicle with a 1.4 petrol engine.
Engine Control Unit Volkswagen, Skoda 1.4 Magneti Marelli IAW 4HV.S 03C906024 6160135903
Volkswagen and Skoda models with the 1.4 petrol engine were fitted with the Magneti Marelli IAW 4HV.S ECU. This 2006 unit carries VW number 03C906024, with no letter at the end, and Marelli number 61601.359.03. It controls injection, ignition and idle speed.
How to identify this unit
- 03C906024 – VW part number, with no letter suffix
- 6160135903 – Magneti Marelli number (61601.359.03)
- IAW 4HV.S – ECU type
The absence of a letter at the end of the VW number is also important information – 03C906024 units with a suffix (e.g. H, AF, AS) are different versions.
Symptoms of a faulty engine control unit
- the engine won't start even though the starter turns and fuel is getting through,
- no communication with the diagnostic tester,
- the engine warning light is on and injection or ignition faults keep returning despite working components,
- rough running or stalling at idle.
First check the ECU's fuses, power supply and earths – faults there produce similar symptoms.
Versions: locked and unlocked
If you choose the locked version, you receive a unit with the previous vehicle's data and immobiliser – unlocking, programming and matching are then down to your workshop. With the unlocked version, we take care of the preparation and usually complete it within 1–2 working days.
There are several methods (PIN / CAR PASS, Virgin, IMMO OFF, auto programming, cloning), but not all of them can be used on every ECU – it depends on the part number, software and immobiliser. Please ask us before placing your order. Description of the options: ECU preparation options.
Questions and answers
| My ECU's number is 03C906024 followed by a letter – will this one fit? |
|---|
| It is probably a different version. Send a photo of the label and we'll compare the markings. |
| Will the 03C906024 start the engine straight after fitting? |
| Not in the locked version – it needs to be programmed and matched to the immobiliser. With the unlocked version, it depends on the preparation method, which we agree before dispatch. |
| What condition is this ECU in? |
| It is a used part, in working order and in good condition. You will find the warranty period in the product features table. |
For help with matching and options, email contact@auto24parts.com – a photo of your ECU's label is all we need.
