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 Golf, Seat Toledo Siemens 037906024S 5WP4165
Vendors's code: 5WP4165
Product code: 9CD2-6204A
Barcode:
Code 39:
ISBN:
€284.55
Price
€284.55
€350.00
Price
€350.00
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 Golf, Seat Toledo Siemens 037906024S 5WP4165
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Shipping
from
€30.00
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shipping
(Poland)
from
€30.00
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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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Does the 037906024S ECU fit a Golf or a Seat Toledo?
It fits if your petrol Volkswagen Golf or Seat Toledo has a unit with VW number 037906024S and Siemens number 5WP4165. This unit is used and working.
Engine Control Unit Volkswagen Golf, Seat Toledo Siemens 037906024S 5WP4165
Seat Toledo and Volkswagen Golf – both cars were fitted with the Siemens engine control unit with VW number 037906024S. The unit runs a petrol engine: it controls the injectors, ignition and idle speed. The Siemens number of this unit is 5WP4165; it is useful when you want to confirm compatibility using the second marking.
Numbers on the label
- 037906024S – VW part number
- 5WP4165 – Siemens number
The letter S at the end of the VW number indicates a specific ECU version. Other 037906024 variants have different software or hardware, so compare the number in full.
Symptoms of a faulty unit
- the engine will not start or stalls after a few seconds,
- unstable idle speed,
- no spark on any cylinder with working ignition components,
- the ECU does not communicate with the tester.
First check the engine earth, fuses and main power relay – these are cheaper and more frequent causes of similar symptoms.
Locked and unlocked versions
The unlocked version is prepared in-house before dispatch, which usually takes 1–2 working days. The locked version contains the data and immobiliser of the previous car – it is suited to a workshop that will unlock, program and match it to the Golf or Toledo themselves.
Whether PIN / CAR PASS, Virgin, IMMO OFF, auto programming or a clone can be applied depends on the part number, software and immobiliser, so not every method is available. Please ask before you buy. Description of the options: ECU preparation options.
Questions and answers
| Is 037906024S the same ECU as 037906024AG? |
|---|
| No. They are two different versions from the same number series – they differ in their letters, and therefore in software or hardware. |
| Will the car start straight away after fitting? |
| With the locked version, no – programming and matching are required. With the unlocked version, we agree the work required before purchase. |
| What condition is the ECU in? |
| Used, working, in good condition. You will find the warranty period in the product specification table. |
Send a photo of the label to contact@auto24parts.com – we will check whether this is the right unit.
