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2218709186 / 2168204326 / 00403171A2 Seat Control Module Fits Mercedes W221 and W216.
This OEM Seat Contour Control Module (also known as seat positioning or power seat ECU) regulates the electric adjustment and multi-contour (massage/lumbar) functions of front seats in higher-end Mercedes models.
Part Numbers: 2218709186, 2168204326 (plus noted variants like 2218702192, 2214422611).
Condition: Commonly available as used, salvaged OEM units, tested and in working condition .
Warranty/Returns: Most listings offer 30-day returns; some sellers provide short-term warranties (e.g., 1-month) automanspareparts.com.
Position: Applicable to front left (driver) or front right (passenger) depending on orientation noted in the part number.
Operation: Installed in seat base, enabling contour adjustments (multi-contour, massage). Should be swapped one-for-one—matching seat side and part number ensures compatibility.
Make | Model / Chassis | Position | Year Range | Seat Type | Part Numbers |
---|---|---|---|---|---|
Mercedes-Benz | S-Class (W221) | Front Left/Right | 2007 – 2009 | Multi-contour (massage/lumbar) | 2218709186 / 2218702192 / 2168204326 |
Mercedes-Benz | CL-Class (W216) | Front Left/Right | 2007 – 2010 | Same seat option as W221 | Same |
Verify part numbers and orientation:
Confirm you’re matching the exact PN and seat side (L/R).
Seat module identification:
Check communication with diagnostic tools—some modules store calibration for seat motors, airbags, memory settings.
Swap process:
Generally plug-and-play; seat ECU will work once swapped and seat connectors restored.
Faults & caution:
Be aware of seat belt tensioner and occupancy detection; mismatched modules might disable certain seat safety features.
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All orders are processed within 1-2 business days. Orders placed on weekends or holidays will be processed the next business day. You will receive a tracking number once your order has shipped, so you can track your package every step of the way.
International customers are responsible for paying any customs duties or taxes that may apply upon delivery. These charges are not included in the shipping cost and vary by country.
If you have any questions regarding shipping, please feel free to contact our customer service team at sales@automanspareparts.com.
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