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 Polo Magneti Marelli IAW 4MV.S 036906034S 6160064504
Vendors's code: 6160064504
Product code: 036906034S
Barcode:
Code 39:
ISBN:
€81.30
Price
€81.30
€100.00
Price
€100.00
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 Polo Magneti Marelli IAW 4MV.S 036906034S 6160064504
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Shipping
from
€30.00
-
shipping
(Poland)
from
€30.00
-
shipping
(Poland)
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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What is the 036906034S ECU from the IAW 4MV.S family?
It is a used, working Magneti Marelli engine control unit for a Volkswagen Polo with a petrol engine, manufacturer number 61600.645.04. Compatibility is decided by the numbers on the label.
Engine Control Unit Volkswagen Polo Magneti Marelli IAW 4MV.S 036906034S 6160064504
Magneti Marelli IAW 4MV.S is the name of the family this engine ECU from a Volkswagen Polo belongs to. The VW number 036906034S and the manufacturer number 6160064504 (61600.645.04 on the label) are two designations of the same module. The ECU runs a petrol engine, managing fuel injection and ignition.
Part numbers
- 036906034S – Volkswagen (VW) part number
- 6160064504 – Magneti Marelli number, written on the label as 61600.645.04
- IAW 4MV.S – Magneti Marelli ECU family
We do not state the engine size, so match the module by its numbers. The letter S at the end of the VW number indicates the software or hardware version.
When might the ECU be faulty?
- no spark or injection when cranking,
- the engine goes into limp mode on its own,
- hunting idle speed,
- stored internal ECU faults.
Start diagnosis by measuring the voltage at the module connector and checking the earths.
How we prepare the ECU
There are two options to choose from:
- locked – with the data and immobiliser of the previous car; for workshops that will unlock, program and adapt the ECU themselves,
- unlocked – prepared by us before dispatch, usually within 1–2 working days.
Whether PIN / CAR PASS, Virgin, IMMO OFF, auto programming or a clone will work for this unit depends on the part number, software and immobiliser system. Please ask before ordering – more on the ECU preparation options page.
Questions and answers
| What should I send before ordering the unlocked version? |
|---|
| A photo of the label on your current ECU or all the numbers on it. Based on this, we will check which preparation methods are possible. |
| Can a workshop handle the locked version? |
| Yes, if it has equipment for programming and immobiliser adaptation. Without such equipment, it is better to choose the unlocked version. |
| Will the engine start straight away after fitting the 036906034S? |
| Not with the locked version – the ECU must be programmed and adapted to the immobiliser. With the unlocked version it depends on the preparation method we agree before dispatch. |
| What condition is this part in? |
| Used, in good condition and fully working. You will find the warranty period in the product features table. |
Want to confirm compatibility before ordering? Send a photo of the label to contact@auto24parts.com.
