Parts for your 2020 Audi Q5-Brake wheel cylinders

Are brake wheel cylinders used on the 2020 Audi Q5?

Short answer: they’re not. On the 2020 Audi Q5 (FY platform), brake wheel cylinders aren’t fitted because this model runs disc brakes at all four corners. Wheel cylinders are a hydraulic component used in drum brake systems, not disc setups. Technical references that outline this include the Audi Q5 (FY, MY2020) Owner’s Manual (brake system overview), the Audi Workshop Manual for Brakes/Brake System/Wheels (which details front and rear disc brake calipers with an electronic parking brake), and the Audi parts catalogue (ETKA) for the FY Q5, which lists calipers, pads, rotors, and electronic parking brake actuators—no wheel cylinders anywhere.

Why no wheel cylinders? Disc brakes use calipers with one or more pistons to clamp pads onto a rotor, creating stopping force. Drum brakes use wheel cylinders to push brake shoes outward against a drum. The 2020 Q5 pairs ventilated discs with an electronic parking brake integrated into the rear calipers. That EPB uses a small motor on each rear caliper to apply and hold the brakes, rather than a drum-in-hat or a hydraulic wheel cylinder.

For owners and workshops looking after a 2020 Q5, the focus isn’t on wheel cylinders but on keeping the disc system in top nick:

• Brake fluid: replace at the interval in the service schedule (commonly every 2 years) using fluid that meets the Audi/VW spec (DOT 4 compatible). Moisture-contaminated fluid can cause a soft pedal and corrosion in calipers and ABS components.
• Calipers and slides: check for smooth slider pin movement, piston seal condition, and any weeping at the dust boots. Sticking slides cause uneven pad wear and shudder.
• Pads and rotors: measure thickness and look for heat spots, cracks, or lip wear. Replace in axle sets and bed-in properly.
• EPB health: run a service mode with a scan tool when changing rear pads, confirm actuator operation, and clear any fault codes.
• Hoses and lines: inspect for cracking, kinks, or leaks, replace if perished.

Signs that warrant attention include a spongy pedal, pulling under braking, grinding or squealing, uneven pad wear across an axle, or any fluid leak at a caliper. None of these point to a failed wheel cylinder on a Q5—because it doesn’t have them—but they do indicate disc brake or hydraulic issues that need sorting.

Does a 2020 Audi Q5 have brake wheel cylinders?

No. The 2020 Q5 uses four-wheel disc brakes with hydraulic calipers and an electronic parking brake on the rear calipers. Wheel cylinders are only used in drum brake systems, so they’re not part of the Q5’s braking hardware.

What does the job of a wheel cylinder on a 2020 Q5?

The hydraulic caliper pistons do the clamping work that, in a drum system, wheel cylinders would handle. For parking and hill-hold, the rear calipers have integrated electronic actuators that apply and hold the brakes without any drum or wheel cylinder involved.

Is there a drum-in-hat parking brake on the 2020 Q5?

No. Some vehicles use a small drum inside the rear rotor for the handbrake, but the 2020 Q5 uses a caliper-integrated electronic parking brake. Servicing rear pads requires putting the EPB into service mode with a scan tool, not replacing any drum shoes or wheel cylinders.