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 1.6 APF Siemens Simos 3.3A 06A906033N 5WP4005303
Vendors's code: 5WP4005303
Product code: 5WP40053
Barcode:
Code 39:
ISBN:
€142.28
Price
€142.28
€175.00
Price
€175.00
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 1.6 APF Siemens Simos 3.3A 06A906033N 5WP4005303
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€30.00
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(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 Simos 3.3A 06A906033N fit a Golf with the 1.6 APF engine?
Yes, if your car has an ECU with VW number 06A906033N and Siemens number 5WP4005303 (5WP40053 03 on the label). This used, working Simos 3.3A unit comes from a Golf with the 1.6 petrol engine, code APF.
Engine Control Unit Volkswagen Golf 1.6 APF Siemens Simos 3.3A 06A906033N 5WP4005303
The APF engine code denotes a 1.6 petrol engine, and the Siemens Simos 3.3A ECU with VW number 06A906033N is one of the units that managed it in the Golf. Simos is a family of Siemens ECUs for petrol engines. This unit is used and working, and the full number on the label is what counts for compatibility.
How to identify this ECU
- 06A906033N – VW part number
- 5WP4005303 – Siemens number, printed on the label as 5WP40053 03
- Simos 3.3A – ECU family
- APF – 1.6 engine code
The number 06A906033 comes with various letters at the end – here N. The letter indicates the software or hardware version, so a replacement with a different letter may not work properly.
Symptoms of a fault
- the engine will not start or stalls immediately after starting,
- uneven idle and jerking,
- no spark or injection with working actuators,
- diagnostics cannot see the ECU.
Before replacing the unit, check the main power relay, fuses and the condition of the wiring loom.
Options: locked and unlocked
If you order the unlocked version, you will receive an ECU prepared by us before dispatch – this usually takes 1–2 working days. The locked version keeps the data and immobiliser of the previous Golf; it is the option for workshops that will unlock, program and match it themselves.
The availability of methods (PIN / CAR PASS, Virgin, IMMO OFF, auto programming, clone) depends on the part number, software and immobiliser. Please ask us before you buy. Description of all options: ECU preparation options.
Questions and answers
| Are 5WP4005303 and 5WP40053 03 the same number? |
|---|
| Yes – it is the same Siemens number, only written differently on the label. |
| Will the ECU work straight away? |
| The locked version needs to be programmed and matched to the immobiliser. With the unlocked version, we confirm the steps after fitting before you buy. |
| What condition is the ECU in? |
| Used, working, in good condition. You will find the warranty period in the product specification table. |
Send the numbers from the label to contact@auto24parts.com – we will help you find the right part.
