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 1.3 A1351501979 1860A301
Vendors's code: A1351501979
Product code: 9CA6-197E9
Barcode:
Code 39:
ISBN:
€121.95
Price
€121.95
€150.00
Price
€150.00
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 Smart 1.3 A1351501979 1860A301
Administratorem danych osobowych jest Auto24parts. Przetwarzamy je w celu przesłania odpowiedzi na zapytanie. Więcej informacji dotyczących przetwarzania danych osobowych znajduje się w polityce prywatności.
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.
Will the control unit with number A1351501979 fit your car?
A used engine control unit for Smart - numbers A 135 150 19 79 / A1351501979; 1860A301: in working order and in good condition. Before you order, check that the numbers match your module.
Engine control unit for Smart
The engine control unit is the electronic 'brain' of the powertrain. This listing is for the Smart 1.3; the part is used, in working order and in good condition.
Numbers to compare
- A 135 150 19 79 / A1351501979 - vehicle part number
- 1860A301 - vehicle part number
- E6T42484 - another part number
- 1351501979 - another part number
Application according to the listing
- Smart - model
- 1.3 - engine according to the listing
What an engine control unit does
Control unit damage can result from water ingress, a voltage surge or wear of the electronic components. The symptoms may be constant or appear intermittently. 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
Compare number A 135 150 19 79 in full with the number on your control unit. Different versions were fitted to the same models, so it is the number that decides the match, not the model alone. Pay attention to the engine and the software version - both matter when numbers differ by just one letter.
Locked and unlocked variants
A locked control unit is sold with the previous vehicle's data - this is an option for workshops that can unlock and program it. The unlocked variant means that we prepare the module for you before dispatch; this usually takes approx. 1-2 working days. The available methods, such as PIN / CAR PASS, Virgin, IMMO OFF, auto-programming or cloning, vary depending on the number, software and immobiliser. If in doubt, ask us before ordering. Read about the variants: locked and unlocked explained.
Symptoms of a faulty control unit
- an engine fault appears after the battery has been replaced,
- the control unit's supply voltage is unstable,
- power drops once the car has warmed up,
- the engine goes into limp mode for no obvious reason.
Bear in mind that after replacement the control unit may need coding or adaptation - check this for your model.
Frequently asked questions
| What condition is this part in? |
|---|
| This is a used part in working order and in good condition. Warranty details are given in the features of this listing. |
| What should I check on delivery? |
| Check that the numbers match the description and that the connectors and housing show no cracks or signs of corrosion. |
| Where can I find the number on the control unit? |
| You will usually find the numbers on the label or the housing of the module, visible once it has been removed from the car. If you cannot read them, send us a photo. |
Write to contact@auto24parts.com with the model, year and the number from your control unit - we will check the fit.
