The wheel speed sensor detects wheel speed for the anti-lock braking system. This is a rear sensor for 2005–2013 Mercedes-Benz S-Class sedans.

• Position: Rear, left or right
• Compatibility: 2005–2013 Mercedes-Benz S-Class 5.5 l Sedan, 2005–2013 Mercedes-Benz S-Class 3.0 l Sedan, 2005–2013 Mercedes-Benz S-Class 3.5 l Sedan