0261207416 Bosch – ME7.5 engine ECU Audi TT 8N IMMO OFF
Bosch ME7.5 engine control unit with part numbers 8N0 906 018 AQ and 0 261 207 416, used in selected petrol versions of the first-generation Audi TT. The offered module is prepared as IMMO OFF, so it does not require the standard synchronisation of the engine ECU with the vehicle immobiliser.
Applications of ECU 8N0906018AQ
This module is used in selected Audi TT 8N versions equipped with the turbocharged 1.8T petrol engine.
- Audi TT 8N – first generation, selected 1.8T petrol versions
- Audi TT 8N3 Coupé – selected 1.8 Turbo engine configurations
- Audi TT 8N9 Roadster – selected 1.8T configurations
- approximate period of use of this ECU generation: early 2000s–2006
Before ordering, compare the part numbers with the original ECU. The key references are Audi 8N0 906 018 AQ and Bosch 0261207416. Vehicle model, production year or engine capacity alone are not sufficient to confirm compatibility.
Common symptoms of a faulty engine ECU
A faulty Bosch ME7.5 ECU can cause different problems depending on the type of failure and the condition of the vehicle electrical system.
- engine will not start,
- no diagnostic communication with the ECU,
- engine stalling or problems restarting,
- rough engine operation and ignition or injection control faults,
- internal ECU fault codes,
- communication problems between the ECU and other vehicle modules.
Before replacing the control unit, it is also advisable to check the vehicle wiring, power supplies, ground connections, fuses and engine actuators, as similar symptoms do not always indicate a faulty ECU.
Programming, cloning and ECU preparation
A standard used engine ECU normally requires the immobiliser data to be matched to the vehicle. Depending on the application, this type of module can be prepared by cloning the original ECU contents, transferring memory data or carrying out the appropriate programming procedure.
This unit is offered as IMMO OFF. The immobiliser function inside the engine ECU is modified so that the control unit does not require the standard immobiliser pairing procedure with the vehicle.
- the ECU is tested before dispatch,
- IMMO OFF preparation is completed before the product is shipped,
- standard ECU adaptation to the immobiliser is not required,
- if another version is required, the ECU can also be prepared using data from the original module,
- hardware compatibility should always be confirmed using the part numbers of the original ECU.
Frequently asked questions – Audi TT 8N ECU 8N0 906 018 AQ
Does ECU 8N0 906 018 AQ fit the Audi TT 1.8T?
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This ECU is used in selected Audi TT 8N versions with the 1.8T petrol engine. Before ordering, compare part number 8N0 906 018 AQ and the Bosch reference shown on the original ECU.
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Does Bosch 0261207416 require coding after installation in an Audi TT 8N?
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The offered version is prepared as IMMO OFF, so standard immobiliser synchronisation with the engine ECU is not required. However, the ECU part numbers must still match the version fitted to the vehicle.
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What does IMMO OFF mean in a Bosch ME7.5 ECU for Audi TT?
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IMMO OFF means that the ECU software is prepared so that the immobiliser does not prevent the engine from starting because the control unit has not been conventionally matched to the vehicle.
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Can ECU 0 261 207 416 be cloned from the original control unit?
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Bosch ME7.5 control units can be prepared by transferring the relevant data from the original ECU, provided that the memory of the old control unit can still be read correctly.
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How can I check whether ECU 8N0906018AQ will fit my Audi TT?
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The most reliable method is to compare the references on the label of the original control unit. For this ECU, the main numbers to check are 8N0906018AQ and 0261207416. If there is any doubt, compatibility can be verified before ordering.
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