Description
OEM reference 0025426518. A genuine used, tested Mercedes-Benz W168 A-Class clock spring — the spiral cable ensuring uninterrupted electrical connection between the rotating steering wheel and the fixed wiring harness.
Known variously as a spiral cable, rotary coupler, or squib, the clock spring is a coiled flat-ribbon conductor housed in a moulded plastic cassette positioned between the steering column and the steering wheel hub. As the wheel turns from lock to lock, the internal ribbon coil winds and unwinds to keep every electrical connection unbroken — serving the driver airbag firing circuit, the horn relay, and all wheel-mounted switches including cruise control, audio, telephone, and paddle-shift inputs. Its role in the driver airbag circuit classifies it as a safety-critical part.
Horn failure or intermittent horn operation; driver airbag or SRS fault light on the dashboard — the most urgent sign, pointing to a broken airbag circuit that may prevent deployment; steering wheel-mounted audio, phone, cruise and paddle-shift controls all becoming unresponsive; a clicking or grinding sensation when the wheel is turned to full lock; or apparent damage to the ribbon conductor itself.
This is a safety-critical component. Fitting must be carried out by a qualified technician — the driver airbag squib circuit runs through the clock spring, and any error in installation can render the airbag inoperative. All SRS and airbag fault codes must be cleared with a suitable diagnostic tool after fitting. Always confirm the OEM part number matches your specific vehicle variant before purchasing. Returns accepted within 14 days for unmodified, uninstalled parts.
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/
