Description
OEM reference 1704600149. A genuine used, tested Mercedes-Benz W210 E-Class spiral cable (clock spring/squib) — the coiled ribbon unit that keeps all steering wheel circuits live through the full rotation range.
The clock spring (also called spiral cable, squib, or rotary coupler) is a flat ribbon conductor coiled inside a plastic housing, mounted between the steering column and steering wheel hub. As the steering wheel rotates, the ribbon winds and unwinds, maintaining continuous electrical connections for the driver airbag pyrotechnic circuit, the horn, and all steering wheel-mounted controls (cruise, audio, phone, paddle shifters). Because the driver airbag circuit passes through this unit, it is a safety-critical component.
Driver airbag or SRS warning light on the instrument cluster — this is the most urgent symptom, indicating the airbag circuit may be broken; horn failure; all steering wheel-mounted controls becoming inactive; a clicking or crunching noise when turning the steering wheel to full lock; or visible physical damage to the ribbon cable.
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/
