The automatic transmission control unit (often designated as TCU or TCM) is a crucial electronic component responsible for smooth and trouble-free gear shifting. Its failure, most often caused by overheating, short circuits, or water damage, results in jerking, an inability to shift gears, or the vehicle entering limp mode. Purchasing a new module at an authorized dealership is a massive expense, which is why replacing it with a fully functional, used original is the most reasonable solution.
Engine Control Unit Volkswagen Golf VI 1.6 TDI Siemens Simos PCR2.1 03L906023MN 5WP42693AA
Vendors's code: 5WP42693AA
Product code: 5WP42693AA
Barcode:
Code 39:
ISBN:
€284.55
Price
€284.55
€350.00
Price
€350.00
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 Golf VI 1.6 TDI Siemens Simos PCR2.1 03L906023MN 5WP42693AA
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Shipping
from
€30.00
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shipping
(Poland)
from
€30.00
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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 does the number 03L906023MN on a Simos PCR2.1 ECU mean?
It is the Volkswagen number of the Siemens Simos PCR2.1 ECU numbered 5WP42693AA, taken from a Golf VI 1.6 TDI. The letters MN indicate its version. The module is used, fully working and available locked or unlocked.
Engine Control Unit Volkswagen Golf VI 1.6 TDI Siemens Simos PCR2.1 03L906023MN 5WP42693AA
Simos is a family mainly associated with petrol engines, but the Simos PCR2.1 is an exception – it is a diesel engine ECU. This Siemens unit comes from a Volkswagen Golf VI 1.6 TDI and carries VW number 03L906023MN. It controls common rail injection and boost.
Markings to compare
- 03L906023MN – Volkswagen part number, version MN
- 5WP42693AA – Siemens number (Siemens VDO / Continental numbering)
- Simos PCR2.1 – ECU family
Compare the VW number with the letters MN against your label. Other 03L906023 suffixes are different software or hardware versions.
Symptoms of a faulty module
- the engine will not start despite a working power supply,
- the diagnostic tool cannot connect to the engine computer,
- unexpected limp mode,
- the engine cutting out while driving.
Before replacing it, check the ECU's wiring, earths and power supply. A damaged wiring loom or a corroded plug produces symptoms very similar to a module failure.
Which option to choose
A workshop with its own equipment can order the locked version – with the immobiliser and data from the previous vehicle – and unlock, program and adapt it itself.
If you prefer, we will prepare the unlocked version before dispatch, usually within 1–2 working days. The availability of methods (PIN / CAR PASS, Virgin, IMMO OFF, auto programming, clone) depends on the part number, software and immobiliser, so please ask before you buy. Description: ECU options.
Questions and answers
| Is the Simos PCR2.1 a petrol ECU? |
|---|
| No. The Simos PCR2.1 is a diesel engine ECU. |
| Will 03L906023MN replace the MM version? |
| They are different versions – we will check compatibility using the numbers on the label. |
| What should I send before buying? |
| A photo of your current ECU's label or all the numbers on it. |
| Will the locked version start the engine after fitting? |
| Not straight away – it needs to be unlocked, programmed and adapted to the immobiliser. |
| What condition is the module in? |
| Used, fully working, in good condition. You will find the warranty period in the product features table. |
Email contact@auto24parts.com – we will help you choose the right option.
