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 03C907309E 0261S06351
Vendors's code: 0261S06351
Product code: 0261S06351
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 03C907309E 0261S06351
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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.
How do you check whether the 03C907309E ECU will fit?
Remove the cover and read the label on your current unit: it must show the VW number 03C907309E and the Bosch number 0261S06351. This unit is used and in working order.
Engine Control Unit Volkswagen Bosch 03C907309E 0261S06351
Matching this ECU starts with the label. The Bosch unit with the VW number 03C907309E comes from a petrol-engined Volkswagen, as confirmed by the Bosch number 0261S06351 from the 0 261 series. It controls injection and ignition by analysing sensor signals. It is used, in working order and in good condition.
Numbers on the label
- 03C907309E – VW number, ending in the letter E
- 0261S06351 – Bosch number, written as 0 261 S06 351
The letter E at the end of the VW number indicates the software or hardware version. If your unit has a different letter, contact us before ordering.
Symptoms of engine ECU failure
- difficult starting or no start even though the ignition system is fine,
- the engine stalling at idle,
- engine warning light and communication faults with other modules,
- damage after moisture or a voltage spike.
Also check the battery: low voltage during cranking can trigger faults similar to a unit failure.
How will we prepare the 03C907309E ECU?
The unlocked version is an ECU we prepare before dispatch – usually within 1–2 working days. The locked version keeps the data and immobiliser of the previous car; this is the option for workshops that will unlock, program and match the unit themselves.
PIN / CAR PASS, Virgin, IMMO OFF, auto programming or clone is not available for every unit – it depends on the part number, software and immobiliser. Ask us before you buy; you will find a description on the ECU preparation options page.
Questions and answers
| Where should I look for the label with the number 03C907309E? |
|---|
| On the ECU casing – it is a sticker with the VW number and the Bosch number. |
| Is the locked version suitable for fitting myself? |
| Only if you have the tools for unlocking and programming. |
| What information should I send before buying? |
| The full numbers from the label or a clear photo of it. |
| ECU condition? |
| Used, in working order, in good condition. You will find the warranty period in the product features table. |
Have a question? Email us at contact@auto24parts.com.
