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 Bosch MED17.5.5 03C906016AA 0261S05589
Vendors's code: 0261S05589
Product code: 03C906016AA
Barcode:
Code 39:
ISBN:
€569.11
Price
€569.11
€700.00
Price
€700.00
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 Bosch MED17.5.5 03C906016AA 0261S05589
Administratorem danych osobowych jest Auto24parts. Przetwarzamy je w celu przesłania odpowiedzi na zapytanie. Więcej informacji dotyczących przetwarzania danych osobowych znajduje się w polityce prywatności.
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
Shipping cost for the selected product
The shipping cost applies to this product (in the selected variant - if applicable). It may change after adding other products to the cart.
Looking for a 03C906016AA ECU for a petrol engine?
We offer a used, working Bosch MED17.5.5 with VW part number 03C906016AA and Bosch number 0261S05589. Before ordering, check both numbers against the label on your own unit.
Engine Control Unit Volkswagen Bosch MED17.5.5 03C906016AA 0261S05589
The MED17.5.5 is a version of the Bosch Motronic ECU for direct-injection petrol engines. This unit carries Volkswagen number 03C906016AA and Bosch number 0261S05589, printed on the label as 0 261 S05 589. It is used, working and in good condition.
Numbers on the label
- 03C906016AA – VW part number
- 0261S05589 – Bosch number
- MED17.5.5 – ECU family
The letters AA identify the version of the unit. A different suffix after 03C906016 means a different ECU.
Typical failure symptoms
- no injector activation when cranking,
- engine cranks but will not start – no spark or injection even though the coils and injectors are fine,
- fuel pressure control faults with a working high-pressure pump and sensor,
- interrupted or failed programming, after which the unit no longer responds.
Start by inspecting the wiring loom and connector pins; a chafed wire often mimics an ECU fault.
Locked vs unlocked
A locked unit still holds the data and immobiliser of the car it was removed from. It is intended for workshops that will unlock, program and match it to the vehicle themselves. We prepare the unlocked version in-house before dispatch, which usually takes 1–2 working days.
Which unlocking method can be used – PIN / CAR PASS code, Virgin, IMMO OFF, auto programming or clone – depends on the part number, software and immobiliser. That is why it is worth asking before you buy. More information: Engine control unit (ECU) variants.
Questions and answers
| What needs to be done after fitting this unit? |
|---|
| With the locked version: unlock it, program it and match it to the immobiliser. With the unlocked version, the work required depends on the preparation method, which we confirm before purchase. |
| Is it enough for the start of the VW number to match? |
| No. The final letters denote a specific version – always compare the full number. |
| What should I have ready before contacting you about unlocking? |
| Write down all the numbers from the label on your old unit or take a photo of it – this is the basis for checking which methods are possible. |
| What condition is the unit in, and is it covered by a warranty? |
| The unit is used, working and in good condition. You will find the warranty period in the product features table. |
Please send any questions about compatibility or unlocking to contact@auto24parts.com.
