Description
The OEM number A6121534479 corresponds to a genuine <a href="/brand/mercedes-benz“>Mercedes-Benz engine management module fitted to W203 C-Class models from 2000 to 2007. Removed from a written-off donor vehicle and individually tested to confirm it meets the performance and output requirements of the original factory specification. ¶ On the W203 C-Class, this ECU is responsible for idle speed management and throttle body control, processing inputs from the throttle position sensor and accelerator pedal module. It also manages fuel cut-off during overrun and deceleration fuel injection strategy, contributing to the C-Class’s balanced performance and fuel economy. ¶ Problems attributable to a failing ECU on the W203 include persistent hunting idle that does not settle, engine stalling on slow corners or roundabouts, poor response to throttle inputs, and trouble codes stored for throttle actuator control or idle speed performance. Some faults may only appear under specific temperature conditions. ¶ Sourced from a written-off C-Class and tested before dispatch, this is a genuine OEM-specification unit. Match OEM number A6121534479 exactly to your original module before ordering. A qualified workshop should perform installation and carry out the required ECU coding or adaptation procedure.
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/
