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 MED9.1 3C0907115Q 0261S02333
Vendors's code: 0261S02333
Product code: 4A1A-9016D
Barcode:
Code 39:
ISBN:
2 276,42 zł
Price
2 276,42 zł
2 800,00 zł
Price
2 800,00 zł
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 MED9.1 3C0907115Q 0261S02333
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120,00 zł
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shipping
(Poland)
from
120,00 zł
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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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How does the number 3C0907115Q differ from 0261S02333?
Only in who assigned it: 3C0907115Q is the Volkswagen number and 0261S02333 is the Bosch number of the same MED9.1 unit. We are selling it as a used, working petrol engine ECU.
Engine Control Unit Volkswagen Bosch MED9.1 3C0907115Q 0261S02333
Every Bosch ECU for Volkswagen carries at least two numbers, and it is worth comparing both. Here they are 3C0907115Q from the car manufacturer and 0261S02333 from Bosch; the 0 261 series denotes a petrol engine ECU. The MED9.1 family handles direct injection, ignition and the electronic throttle. We do not specify a particular model, so matching is decided by the numbers.
What the numbers mean
- 3C0907115Q – VW part number, the letter Q identifies the version
- 0261S02333 – Bosch number, on the label: 0 261 S02 333
- MED9.1 – Bosch Motronic ECU type
The 3C0907115 core exists in several variants. The letter Q at the end indicates a specific software and hardware version, so an ECU with a different suffix or no letter at all is not necessarily compatible.
When the ECU may be faulty
- the engine will not start even though fuel and power supply are fine,
- throttle fault messages that replacing the throttle does not cure,
- loss of communication with the engine unit while driving or during diagnosis,
- traces of water or corrosion in the ECU connector.
Check the earths and wiring loom first – only then diagnose the unit itself.
Locked or unlocked
The locked version holds the data and immobiliser of the donor car in its memory. It is bought by workshops that carry out the unlocking, programming and matching themselves. We prepare the unlocked version before dispatch, usually within 1–2 working days.
For ECU 3C0907115Q, the available methods – PIN / CAR PASS, Virgin, IMMO OFF, auto programming, clone – depend on the software and immobiliser in your car. Ask us before you order. We have described everything on the ECU variants page.
Questions and answers
| Which number matters more when matching? |
|---|
| Compare both: VW number 3C0907115Q with its version letter and Bosch number 0261S02333. |
| Will the car start once the locked version is plugged in? |
| No. The unit must first be unlocked and matched to the immobiliser. |
| What condition is the ECU in? |
| It is a used part, working and in good condition. You will find the warranty period in the product features table. |
Need help finding the right part? Send the numbers to contact@auto24parts.com.
