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 Smart Fortwo 0261201383 A1321532579001
Vendors's code: 0261201383
Product code: 7F4A-947F4
Barcode:
Code 39:
ISBN:
€142.28
Price
€142.28
€175.00
Price
€175.00
In stock
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 Smart Fortwo 0261201383 A1321532579001
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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 can you check whether this control unit will fit your Smart Fortwo?
A used engine control unit in working order and in good condition for the Smart Fortwo - numbers 0 261 201 383 / 0261201383; A1321532579 001 / A1321532579001. The numbers are listed below, and if you have any questions about the fit, write to us.
Engine control unit for Smart Fortwo
According to the listing data, this electronic module fits the Smart Fortwo. This is a used part in working order and in good condition - match it using the numbers in the list.
Numbers to compare
- 0 261 201 383 / 0261201383 - Bosch number (manufacturer)
- A1321532579 001 / A1321532579001 - vehicle part number
According to the listing data: Smart Fortwo (model), Bosch (manufacturer).
Locked and unlocked variants
We prepare an unlocked control unit before dispatch, which usually takes about 1-2 working days. A locked control unit keeps the previous car's data and immobiliser coding, so it is intended for garages that will unlock, program and match it to the vehicle themselves. Whether the chosen method (PIN / CAR PASS, Virgin, IMMO OFF, programming, cloning) can be used depends on the specific control unit number, its software and the immobiliser. Before buying, send us the number of your control unit. More details: what locked and unlocked mean for an engine control unit.
How an engine control unit works
The module is linked to the immobiliser system, so after replacing it with a used unit you will usually need to match it to the car. We describe what this involves in the section on variants. The module stores fault codes which, once a diagnostic tool is connected, help to establish whether the sensors, the wiring or the control unit itself is to blame.
How to match this part
We have several control units for this model in our range, with different numbers. It is the number on the label that counts, not the model name alone. An incompatible version of the control unit may not work with the injectors or sensors, so we do not assume that different listings are interchangeable.
Symptoms of a faulty control unit
- hard starting when the engine is cold,
- smoke from the exhaust and rough running,
- misfire faults stored in the diagnostic memory,
- no response to the accelerator pedal.
Start by checking the fuses and connectors; replace the control unit only when the wiring and sensors are working properly.
Questions and answers
| Is the part new? |
|---|
| The control unit is used, but in working order. The warranty is stated in the product features. |
| Can I order an unlocked control unit? |
| Yes, you choose the variant in the listing. Whether an unlocking method is available depends on the number and software, so if in doubt, ask us before buying. |
| Which number matters most when matching? |
| It is best to compare all the numbers on the module, above all the one marked as the manufacturer's or OEM number. |
If you have any questions about the application, email contact@auto24parts.com and quote the number from the label.
