Parts for your 2013 Audi Q5-Brake booster

2013 Audi Q5 Brake Booster — What it does and how to look after it

Yes, the 2013 Audi Q5 (Type 8R) is fitted with a vacuum brake booster (also called a brake servo). Technical sources that document this include: Audi Self‑Study Programme 424 “The Audi Q5” (vacuum‑assisted tandem brake servo and vacuum supply), the Audi factory workshop manual (ELSA/erWin) for Q5 8R under Brakes—Hydraulic System—Brake Servo, and the Bentley Publishers Audi A4/A5/Q5 2008–2016 Service Manual which describes the vacuum brake booster used on the shared B8/8R platform. Audi also issued service actions in various markets for water ingress and corrosion affecting the Q5 brake booster on model years around 2010–2014, underscoring that the part is present on this vehicle.

The brake booster’s job is straightforward: it uses engine vacuum (and, on some engines, an auxiliary vacuum pump) to multiply pedal effort so the driver gets strong braking with a light press. When the booster isn’t doing its thing, the pedal feels rock‑hard and stopping distances can blow out — not what anyone wants on Aussie or Kiwi roads.

For a 2013 Q5, regular servicing should include a quick look over the vacuum hose and one‑way check valve to the booster, plus making sure the cowl/plenum drains under the windscreen are clear so water can’t pool and attack the booster housing. A gentle listen for constant hissing near the pedal or booster with the engine idling, and a basic vacuum hold test, are simple checks a workshop can add to a brake service.

• Watch for: hard brake pedal, longer stopping distances, hissing from the dash area, rough idle when pressing the brake, or the need to stand on the pedal at low speeds.
• Good practice: inspect the vacuum line and check valve orientation, confirm the booster holds vacuum after shut‑down, and keep plenum drains clean to prevent water ingress.

If replacement is needed, a competent workshop will typically unbolt the master cylinder from the booster and move it aside without opening the hydraulics (if access allows). If brake lines are opened, they’ll bleed the system and run an ABS bleed procedure with a scan tool. Expect new self‑locking nuts and the pedal retaining clip to be replaced, torque settings followed to spec, and a road test with brake performance verification. On diesel and some petrol Q5s, the auxiliary vacuum pump and its hosework should be checked at the same time.

Bottom line: a healthy booster keeps the Q5’s braking light, consistent and confidence‑inspiring. If the pedal goes rock‑hard or braking feels off, park it and get it checked — it’s a safety‑critical part.

Technical sources (no external links): Audi Self‑Study Programme 424 “The Audi Q5”, Audi Workshop Manual (ELSA/erWin) for Q5 8R, Brakes—Hydraulic System—Brake Servo, Bentley Publishers Audi A4/S4/A5/S5/Q5 2008–2016 Service Manual, Brake System—Vacuum Brake Booster, Audi service actions concerning Q5 brake booster water ingress/corrosion (approx. MY2010–2014).

Popular questions about the 2013 Audi Q5 brake booster

How do you know the brake booster is failing on a 2013 Q5?
Common giveaways are a very firm pedal, needing more distance to stop, and a faint hiss when pressing the brake. The engine might idle roughly when the pedal’s held because of a vacuum leak. If the pedal effort suddenly spikes, it’s safest to stop driving and have it inspected.

Do diesel and petrol Q5s use different boosters or a vacuum pump?
All variants use a vacuum servo, but many TDI and some TFSI engines also run an auxiliary vacuum pump to ensure stable vacuum. The booster unit itself may have different part numbers across engines and build dates, the workshop will match by VIN.

What does replacement usually cost in Australia or New Zealand?
Prices vary with parts source and access time, but as a ballpark many workshops quote roughly AUD/NZD $800–$1,600 fitted. That can rise if hoses, the check valve, or the vacuum pump also need attention. A proper post‑repair road test and, if hydraulics were opened, a full brake bleed are must‑dos.