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 Siemens VDO Simos 7.1A 06A906033GG 5WP4034904
Vendors's code: 5WP4034904
Product code: 5WP4034904
Barcode:
Code 39:
ISBN:
€101.63
Price
€101.63
€125.00
Price
€125.00
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 Siemens VDO Simos 7.1A 06A906033GG 5WP4034904
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Where can I read the number 06A906033GG on the Simos 7.1A ECU?
VW number 06A906033GG and Siemens VDO number 5WP4034904 (printed as 5WP40349 04) appear on the label on the unit casing. This used, working ECU comes from a 2008 Golf 1.6 with a petrol engine.
Engine Control Unit Volkswagen Golf 1.6 Siemens VDO Simos 7.1A 06A906033GG 5WP4034904
The Simos 7.1A is a Siemens VDO unit for Volkswagen petrol engines. This one, with VW number 06A906033GG, comes from a 2008 Golf 1.6. It manages fuel injection, ignition and the electronic throttle – when it fails, the engine usually will not start or runs in limp mode.
Numbers to check
- 06A906033GG – VW part number
- 5WP4034904 – Siemens VDO number, on the label 5WP40349 04
- Simos 7.1A – ECU family
The GG suffix is the version designation. 06A906033 ECUs come in many letter variants and not every one fits every Golf 1.6, so compare the full number. If the label is partly worn, the Siemens VDO number beginning with 5WP will also help.
Most common symptoms
- no start with a working fuel system,
- engine warning light and internal ECU faults,
- unstable running and stalling when stationary,
- the throttle does not respond to the accelerator pedal.
To begin with, check the earths and supply voltage – a weak battery can cause similar symptoms.
ECU preparation – versions
We offer two versions. Locked: data and immobiliser from the previous car, for workshops that will unlock, program and match the unit themselves. Unlocked: we prepare it before dispatch, usually within 1–2 working days.
The preparation method – PIN / CAR PASS, Virgin, IMMO OFF, auto programming or a clone – depends on the part number, software and immobiliser. Not every method is available, so please ask before you buy. More: ECU preparation options.
Questions and answers
| Will it fit a Golf 1.6 from a different model year? |
|---|
| The year of manufacture is a guide, but what decides is the number 06A906033GG and the Siemens VDO number on the label. |
| What should I send before buying the unlocked version? |
| A clear photo of the label on your current ECU. We will check which preparation methods are possible. |
| What condition is the unit in? |
| Used, working, in good condition. You will find the warranty period in the product specification table. |
If you have any questions, email us at contact@auto24parts.com.
