0261S05812 03C906027BA IMMO OFF ECU ENGINE CONTROLLER VW GOLF VI – verified and ready to install from EcuSale

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Information

CAR MODEL VW GOLF VI
OEM: 0261S05812
PART NUMBER PART NUMBER
PART NUMBER 03C906027BA MED17.5.5
PLUG AND PLAY IMMO OFF
WARRANTY 6 MONTH
TESTED Second hand product
PAYMENT: Credit Card , Bank Transfer , PayPal
EXPRESS DELIVERY – in EU Countries: European Union 2-3 working days
INTERNATIONAL DELIVERY – Outside EU Countries: Worldwide 4-7 working days

Number of ratings: 0

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1. Are the products tested before shipping?

Yes, every ECU engine controller, BSI module, BCM module, ABS module, transmission control unit, and other automotive electronic module is electronically tested before shipment. Each unit is checked for proper communication and correct operation to ensure you receive a fully tested product ready for installation.

2. Does the ECU engine controller require programming or coding after installation?

Whether programming or coding is required depends on the version of the product. We offer VIRGIN, IMMO OFF, and Plug & Play ECU engine controllers. Information about any required programming or coding is always clearly stated in the product description. In many cases, the unit can be installed and used without any additional coding or adaptation.

3. How do I choose the correct part for my vehicle?

The most important step is to compare the part numbers found on your original unit. Pay special attention to the Bosch, Siemens, Magneti Marelli, Continental, or vehicle manufacturer's OEM part number. If you are unsure, simply send us a photo of your existing module or provide your vehicle's VIN, and our specialists will help you identify the correct part.

4. Are the products covered by a warranty?

Yes, all ECU engine controllers, ABS modules, BCM modules, BSI modules, transmission control units, and other automotive electronic modules offered in our store are covered by a warranty. Every product is carefully tested and prepared before shipment. If you experience any issues, our technical support team is available to assist with diagnostics and help resolve the problem quickly and efficiently.

5. What payment methods are available in the store?

We offer secure online payments processed through Stripe and PayPal. Customers can pay using a credit or debit card, Apple Pay, Google Pay, Klarna, online banking payments, or a traditional bank transfer. After placing an order, you will receive a secure payment link to complete your purchase safely and conveniently.

Blog about ECU Engine Controllers and Automotive Electronics
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Audi Q7 3.0 TDI Water Damaged Engine ECU| 4L1910401D & 4L0910401G IMMO OFF Plug & Play

Basic Information 22-05-2026

Audi Q7 3.0 TDI won’t start after heavy rain? The engine ECU could be water damaged

One of the most common failures in the Audi Q7 3.0 TDI is water damage affecting the Bosch EDC17CP04 engine ECU. This issue frequently impacts units 0281015868 and 0281014174, which are mounted beneath the windscreen scuttle panel, an area highly exposed to moisture and blocked drainage channels that can lead to corrosion inside the ECU.

In this article, we explain the typical symptoms of a failed Audi Q7 3.0 TDI engine control unit, when ECU cloning is still possible, and why in many situations an IMMO OFF Plug & Play solution is the fastest and most reliable repair option.

0281015868 & 0281014174 – common ECU failures in the Audi Q7 3.0 TDI

Learn why engine ECUs such as 4L1910401D and 4L0910401G are especially vulnerable to water ingress, which fault codes usually appear during diagnostics, and how professional ECU repair or replacement is performed for the Audi Q7 3.0 TDI.

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Water-Damaged Bosch 0281013691 / 4L0910401K ECU – Common Audi Q7 3.0 TDI Engine Control Unit Failure

Basic Information 13-05-2026

Water Damage in Bosch 0281013691 / 4L0910401K ECU – A Common Audi Q7 3.0 TDI Failure

The Bosch 0281013691 / 4L0910401K engine control unit fitted to the Audi Q7 3.0 TDI 4L is well known for being vulnerable to water damage. In many cases, the issue is caused by the ECU’s location beneath the windshield cowl, where moisture and rainwater can accumulate over time due to blocked drainage channels.

Symptoms of a failing ECU may appear gradually or occur suddenly after heavy rain, a car wash, or long periods of vehicle inactivity. Common signs include no communication with the engine control module, intermittent or complete no-start conditions, CAN bus communication faults, and in severe cases, a completely dead ECU in the Audi Q7 3.0 TDI.

Similar problems frequently affect other Bosch EDC16CP34 units installed in the same location, including 0281012772 / 4L0907401, 0281012919 / 4L0907401, 0281013689 / 4L0910401M, and 0281013690 / 4L0910401L. These engine control units share nearly identical hardware architecture, with the main differences relating to software versions and vehicle-specific configuration used across different Audi Q7 3.0 TDI variants.

In this article, we explain the most common failure symptoms of the 0281013691 / 4L0910401K ECU, the typical causes of water intrusion, CAN communication issues, and a practical solution in the form of a ready-to-install IMMO OFF Plug & Play engine ECU that works without immobilizer programming or data cloning.
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