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 T4 Siemens 044906022R 5WP4181
Vendors's code: 5WP4181
Product code: 5WP4181
Barcode:
Code 39:
ISBN:
€650.41
Price
€650.41
€800.00
Price
€800.00
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 T4 Siemens 044906022R 5WP4181
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€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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Does the 044906022R ECU fit your Volkswagen T4?
It does, if your current ECU has VW number 044906022R. This is a used, working Siemens module for the petrol Volkswagen T4, available locked or unlocked.
Engine Control Unit Volkswagen T4 Siemens 044906022R 5WP4181
In the petrol Volkswagen T4, this Siemens ECU is responsible for running the engine: it meters the fuel, controls the ignition and looks after the idle speed. The module has VW number 044906022R and Siemens number 5WP4181. Our data gives neither the engine size nor the ECU family, so go solely by the numbers on the label when matching. A working ECU is essential for the engine to start at all – when it fails, the T4 usually sits still even though the rest of the engine components work. It is also worth remembering that different module versions were fitted to this model, so the appearance of the casing is not a sufficient criterion.
Markings on the label
- 044906022R – Volkswagen part number
- 5WP4181 – Siemens number
5WP numbers are Siemens VDO / Continental designations. The letter R at the end of the VW number identifies the module version, so an ECU with the same start to the number but a different letter will not always be a replacement.
When to suspect the ECU
- the engine cranks but will not catch,
- the engine cutting out and stalling at idle,
- no communication with diagnostics,
- a fault after a voltage surge, e.g. when jump-starting.
In older vehicles such as the T4, first check the power relay, fuses and the condition of the earth leads.
Locked and unlocked versions
We offer this module in two versions. The locked one has the data and immobiliser of the previous T4 and goes to workshops that will unlock, program and adapt it themselves. We prepare the unlocked one before dispatch, usually within 1–2 working days.
Not every method – PIN / CAR PASS, Virgin, IMMO OFF, auto programming, clone – will work with this ECU; it depends on the number, software and immobiliser. Please ask before buying. Description of the options: ECU preparation options.
Questions and answers
| Which T4 engine is this ECU for? |
|---|
| Our data only mentions a petrol engine. Comparing the number 044906022R is the reliable way to confirm compatibility. |
| Will the locked version work straight away? |
| No, it needs programming and adaptation to the immobiliser. |
| What condition is the ECU in? |
| It is a used, working module in good condition. You will find the warranty period in the product features table. |
Send a photo of the label to contact@auto24parts.com – we will confirm compatibility.
