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 MED17.5.2 06J906027KB 0261S16785
Vendors's code: 0261S16785
Product code: 0261S16785
Barcode:
Code 39:
ISBN:
£370.74
Price
£370.74
£456.01
Price
£456.01
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 MED17.5.2 06J906027KB 0261S16785
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from
£22.80
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shipping
(Poland)
from
£22.80
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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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Will the 06J906027KB ECU fit a Volkswagen with my number?
It will if the number on your label is 06J906027KB or Bosch 0261S16785 (0 261 S16 785). This MED17.5.2 unit is used, in working order and in good condition.
Engine Control Unit Volkswagen Bosch MED17.5.2 06J906027KB 0261S16785
The Bosch MED17.5.2 numbered 0261S16785 is a Motronic ECU for a direct-injection petrol engine. In the Volkswagen catalogue it has the number 06J906027KB. It is responsible for the fuel quantity, ignition timing and responding to sensor signals, so its failure usually immobilises the car or severely limits engine operation.
Identifying the unit
- 06J906027KB – VW number
- 0261S16785 – Bosch number, shown on the label as 0 261 S16 785
- MED17.5.2 – Bosch Motronic family
The KB ending is the ECU version. 06J906027 units with other letters are not automatic replacements.
When to suspect a unit failure?
- no connection to the unit in the diagnostic tester,
- misfires on one cylinder despite a new coil and spark plug,
- incorrect fuel metering in the direct injection system with no injector fault,
- lambda sensor or valve faults that keep coming back despite replacing the parts.
First rule out a weak battery, corroded earths and a loose ECU connector – they produce very similar symptoms.
Two versions to choose from
The unlocked version is the option for those who want to receive the ECU already prepared – we do this before dispatch, typically within 1–2 working days. The locked version contains the immobiliser and data from the previous car, so it is intended for workshops that will carry out the unlocking and adaptation themselves.
The availability of methods such as PIN / CAR PASS, Virgin, IMMO OFF, auto programming or clone depends on the ECU number, software and type of immobiliser. Before you buy, ask what is possible for the 06J906027KB unit. All the variants are described in ECU preparation and variants.
Questions and answers
| Will the 06J906027KB start the engine as soon as it is connected? |
|---|
| A locked unit – no, it must first be unlocked and matched. With an unlocked one, everything depends on the preparation method agreed before purchase. |
| Is a matching start of the VW number enough? |
| No. The final letters denote a specific version – always compare the full number. |
| How can I find out which unlocking method will be possible? |
| Send us the numbers from the label on your ECU. We will compare them with this unit and advise you on what can be done. |
| Has the unit been tested? |
| Yes – it is a used part in working order and in good condition. You will find the warranty period in the product features table. |
Have a question about this unit? Send a photo of the sticker to contact@auto24parts.com – we will tell you which options are available.
