Front seats

Front seat adjustment

All W220s have front adjustable seats. The seat adjustment switches are located on the front doors. Use of buttons:

• (1) Head restraint height
• (2) Seat height
• (3) Seat cushion tilt
• (4) Seat cushion depth
• (5) Seat fore and aft adjustment
• (6) Seat backrest tilt

Seat heating

All W220s are equipped with seat heating feature for front seats.

Seat heating has three modes:

• Rapid heating (two lamps on)
• Normal heating (one lamp on)
• No heating (lamps off)

The system switches from the rapid heating mode to normal heating mode after approximately five minutes. The seat heating will be automatically switched off after approximately 30 minutes.

Seat ventilation

Vehicles with option code 401 are equipped also with the seat ventilation feature. The blue indicator lamps on the switch show the ventilation level selected. Seat ventilation can be activated manually with the SmartKey in starter switch position 1 or 2. The driver's seat ventilation can be activated to the highest level automatically by the summer opening feature.

Rear seats are heated in vehicles with option code 872. In vehicles with option code 402 rear seats are heated and ventilated.

Note: If one or all of the lamps on the seat ventilation switch are flashing, there is insufficient voltage since too many electrical consumers are switched on. The seat ventilation and heating switches off automatically. The seat ventilation and heating will switch back on again automatically as soon as sufficient voltage is available.

Non Functional Heated Seats

The seat heater wires and the supply wires often fail due to constant flexing of over several of the rigid seat support frames.

The complete upholstery or seat cushion is no longer replaced, reference document LI91.30-P-048345, "Heated Seats Nonfunctional."

Repair kits are available;

• Left: 17182001982
• Right: 17182000982

http://www.heatedseatkits.com/

DIY Repair to Front Seat Heater Cushion

There are several good articles on performing DIY repair of seat heaters.

• See post #24 at: http://www.benzworld.org/forums/w210...t-problem.html
• http://www.benzworld.org/forums/w210...er-repair.html
• http://www.checkcorp.com/seat-heater/seat-heaters.asp
• http://www.benzworld.org/forums/w210-e-class/1325335-heated-seats-not-heating.html
• http://www.benzworld.org/forums/r171-slk-class/1500932-heated-seat-element-replacement-help.html

DIY How to replace front lumbar supports

• http://www.benzworld.org/forums/w220-s-class/2395441-how-replace-your-front-lumbar-supports.html