PEUGEOT RCZ Handbook page 67

Lumbar adjustment
Turn the dial to obtain the correct lumbar position.
Heated seats control
With the engine running, the front seats can be heated separately.
Use the adjustment dial, placed on the side of each front seat, to
switch on and select the level of heating required:
0 : Off.
1 : Low.
2 : Medium.
3 : High.