The automatic transmission control unit (often designated as TCU or TCM) is a crucial electronic component responsible for smooth and trouble-free gear shifting. Its failure, most often caused by overheating, short circuits, or water damage, results in jerking, an inability to shift gears, or the vehicle entering limp mode. Purchasing a new module at an authorized dealership is a massive expense, which is why replacing it with a fully functional, used original is the most reasonable solution.
Engine Control Unit Volkswagen Siemens Simos 10.12 03F906070J 5WP44744
Vendors's code: 5WP44744
Product code: 03F906070J
Barcode:
Code 39:
ISBN:
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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 do I check whether ECU 03F906070J fits my car?
Compare two numbers from the label: VW number 03F906070J and Siemens number 5WP44744. If both match, this used, working Simos 10.12 unit is the right replacement.
Engine Control Unit Volkswagen Siemens Simos 10.12 03F906070J 5WP44744
Simos is a family of Siemens (later Continental) ECUs for petrol engines. This Simos 10.12 unit has VW number 03F906070J and manufacturer number 5WP44744 in the Siemens VDO numbering system. It controls fuel injection, ignition and the throttle. Our data does not include a specific Volkswagen model, so we base matching solely on the numbers.
Numbers on the label
- 03F906070J – Volkswagen part number
- 5WP44744 – Siemens manufacturer number
- Simos 10.12 – ECU family
The letter J at the end of the VW number denotes the software or hardware version. A 03F906070 unit with a different letter may contain different data, so compare both numbers in full before buying.
Symptoms of a possible fault
- no start with a working fuel and power supply,
- engine warning light on and loss of power,
- rough running, misfires with no coil fault,
- the ECU does not respond to the diagnostic tool.
Start by checking the earths, fuses and connector condition – some of these faults originate in the wiring rather than in the unit itself.
How we sell this ECU
There are no options to choose from with this unit. We confirm with you before purchase what condition ECU 03F906070J is in and what will need to be done after fitting.
Simply send us the numbers from your ECU or a photo of the label – we will use them to check compatibility and tell you what fitting it to your car will involve. We have described the general principles of unit preparation on the engine control unit variants page.
Questions and answers
| Is 5WP44744 a Siemens number? |
|---|
| Yes, it is the manufacturer number in the Siemens VDO numbering system, assigned to the same unit as 03F906070J. |
| What needs to be done after fitting? |
| It depends on the condition of the ECU – we confirm this individually before purchase. |
| What condition is the ECU in? |
| Used, working and in good condition. You will find the warranty period in the product features table. |
Any questions? Write to contact@auto24parts.com – we will answer based on the numbers from your ECU.