Description
Part number 4D0907557J is a genuine Audi A8 D2 Engine ECU Control Module taken from a written-off example of this prestigious flagship saloon. The D2-generation A8 represents one of Audi’s most complex engineering platforms of its era, and this ECU has been bench-tested to confirm full operational readiness before listing.
This ECM manages one of the A8 D2’s petrol powertrains through Bosch Motronic, overseeing fuel injection, ignition advance, knock sensor response, idle speed, and evaporative emissions. It also exchanges torque demand and wheel-speed data with the Quattro all-wheel-drive transfer case controller, ensuring intelligent power distribution across all driving conditions.
Failing ECU symptoms on the A8 D2 include Quattro management warnings, intermittent or complete engine no-start, stored fault codes for sensor implausibility or internal driver stages, sudden power reduction at motorway speeds, gearbox shift quality issues linked to missing engine torque signals, or diagnostic communication failures.
This is a used and tested unit. Verify OEM number 4D0907557J against your A8 D2 build data and engine code prior to ordering. Specialist installation by a technician with D2 platform experience is recommended. Immobiliser adaptation, VIN assignment, and VCDS coding will be required. 14-day returns accepted.
Returns accepted only for genuine faults — faulty on arrival, not as described, or wrong part supplied — requested within 14 days, with all 3 anti-tamper stickers intact. No returns for change of mind, incorrect installation, coding/programming, or buyer compatibility errors; checking compatibility (OEM number, firmware, vehicle) is the buyer’s responsibility. Full policy: https://giantparts.eu/refund-and-returns/
