Description
OEM part number A0325451632, a genuine Mercedes-Benz W220 S-Class Automatic Transmission ECU Module, removed from a written-off vehicle and tested in working condition before dispatch.
The TCU controls the automatic gearbox of the W220 S-Class through dedicated sport, economy and winter driving programmes, each carrying its own upshift speed mapping to match road conditions and driver preference. Slip control across the torque converter clutch is continuously managed by this module, and it exchanges data with the W220’s air suspension and stability systems to refine ratio selection during dynamic driving.
Symptoms pointing to a failing transmission ECU in the W220 S-Class include a complete loss of kickdown response when requesting maximum acceleration, erratic or unexpectedly aggressive gear changes at normal road speeds, the gearbox or transmission warning light illuminating on the instrument cluster, and in severe cases the automatic gearbox entering a fail-safe mode and locking into a single gear.
This is a genuine used and tested unit carrying OEM part number A0325451632. Professional installation by a qualified technician is required. Transmission TCU adaptation or a basic settings reset must be completed after fitting to finalise the repair.
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/
