DRC Problems – Symptoms

This is by no means a definitive list but:

• Clanking from the rear shocks when going over uneven roads
• Body pitch and roll more than normal
• Poor cornering – understeer
• Car becomes unstable under high-speed braking (veers from side to side)
• More vibration through the pedals

The DRC system (known as Dynamic Ride Control – DRC – by Audi) is a pure mechanical damping system which monitors road conditions and cornering forces, and adjusts the suspension accordingly. This advanced damping system counteracts movements of the vehicle along its longitudinal axis and transverse axis.

When a corner is taken, a flow of oil, and thus a supplementary damping force, is generated via the central valve between the diagonally opposed shock absorbers. When the suspension is compressed on one side, the damper characteristic is modified in such a way that rolling or pitching movements are almost entirely eliminated. As a result, this mechanically active damping system ensures that the RS6 Quattro maintains extremely good tracking stability when cornering and responds precisely to adjustments of the steering wheel.