Does 0261S08055 fit VW / Audi / Seat?
03C906026AB (0261S08055) is a Bosch MED17.5.5 engine ECU for the VW / Audi / Seat 1.4 TSI. We sell it as an IMMO OFF Plug & Play version – after fitting it does not have to be programmed to the car's immobiliser. Every unit is checked before dispatch; warranty: 6 months.
Label markings
- OEM number: 03C906026AB (03C 906 026 AB)
- Bosch number: 0261S08055
- ECU type: Bosch MED17.5.5
Vehicle compatibility
Compare OEM number 03C906026AB and Bosch number 0261S08055 with the sticker on your ECU. If both match, the ECU fits – even if your car is not named in the description. A similar number, e.g. 0281014148, is a different version and needs separate checking.
Installation and preparation
Fitting means plugging the ECU in where the old one was – no key coding and no programming. It runs without errors after fitting. Cloning the data from your ECU is available on request (send the ECU or files).
Symptoms of a failed ECU
A failed ECU can show different symptoms, for example:
- the engine does not start
- no diagnostic communication with the ECU
- the engine stalls while running
- recurring injection errors
Before buying an ECU, rule out the power supply, earth and wiring – they can cause the same symptoms.
Other VW engine ECUs in stock
Full range: Volkswagen engine ECUs · Bosch ECUs
Frequently asked questions about the 03C906026AB / 0261S08055 ECU
Does the 03C906026AB ECU need programming?
No. It is an IMMO OFF Plug & Play version – after fitting you do not program it to the immobiliser.
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Do errors appear after fitting?
No. The 03C906026AB ECU is an IMMO OFF version and runs without errors after fitting.
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How do I check that 0261S08055 fits my car?
Compare OEM number 03C906026AB and Bosch number 0261S08055 with the label on your old ECU. If both match, the ECU fits.
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