Descrizione
OEM references 4D0927156BH and 0260002521 identify this automatic transmission control module as a factory-original unit for the Audi A8 D2 fitted with a ZF automatic gearbox. It is supplied as a genuine used, tested component.
The transmission control module manages all automatic gearbox functions, processing throttle position, vehicle speed, engine load and the selected drive programme to determine optimal gear selection and shift timing. It controls torque converter lockup for fuel efficiency, applies adaptive shift mapping calibrated to the driver’s style, manages Sport, Economy and Winter programme shift characteristics, and handles kickdown logic for maximum-throttle acceleration. Limp-home mode is engaged automatically if a transmission fault is detected.
Harsh or erratic gear changes, gearbox stuck in a single limp-home ratio, delayed or refused engagement in Drive or Reverse, non-functional kickdown, and fault codes logged under the transmission control module in the diagnostic system.
This unit is in good used condition and has been tested prior to listing. Always verify the OEM part number against your vehicle’s existing module before ordering. Professional installation is recommended, and coding or adaptation to your vehicle may be required after fitting. 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/
