Parts for your 2020 Audi Q5-Drive belt tensioner

2020 Audi Q5 drive-belt tensioner — purpose, checks and replacement

Yes, the 2020 Audi Q5 uses a serpentine (poly-V) drive-belt tensioner. This is documented in Audi’s factory workshop information for the FY-series Q5 (erWin/Workshop Manual, Rep. Gr. 13 – Poly V-belt, removing and installing), the Audi ETKA parts catalogue for FY models (belt drive section listing the spring-loaded tensioner for both 2.0 TFSI and 2.0 TDI variants), and major aftermarket technical catalogues from brands like INA, Gates and Dayco, which all specify a dedicated tensioner assembly for this vehicle.

On the Q5, the drive-belt tensioner keeps the accessory belt at the right tension so the alternator and air-conditioning compressor are driven properly, and on some engines, selected auxiliary pumps as well. It automatically compensates for belt wear and engine load changes, minimising slip, noise and heat build-up. A healthy tensioner helps maintain steady charging voltage, crisp A/C performance and longer belt and pulley life.

• Typical warning signs: cold-start squeal or chirp, belt flutter, frayed or glazed belt ribs, rattling from the tensioner arm, charging warnings, or A/C that cuts in and out.
• Inspection tips: at regular services (about every 15,000 km/12 months), check belt condition and tracking, spin idlers by hand for roughness, and watch the tensioner arm for smooth movement at idle (no chattering or bouncing).

Replacement is usually done with the belt and any worn idlers as a kit. On the Q5 FY platform, access is typically from the right-front wheel arch or with the front-end moved to the service position as per the workshop manual. A technician will unload the tensioner with the correct spanner, lock it if provisioned, remove the belt, then replace the tensioner and route a new belt using the factory diagram. Fasteners should be torqued to spec, and any single-use bolts replaced. After fitting, the engine is run and the belt path and tensioner arm behaviour are rechecked.

There’s no fixed time-based interval from Audi for the tensioner itself, but in Australian and New Zealand conditions many workshops recommend replacing the tensioner proactively with the belt somewhere around 100,000–150,000 km, or immediately if there’s noise, visible misalignment, or contamination with oil or coolant. Sticking with quality parts (Audi Genuine, INA, Gates, Dayco) and correct installation practices will keep the Q5’s accessory drive quiet, efficient and reliable.

• Good practice: replace the belt, tensioner and any noisy idlers together, verify alternator overrunning pulley condition, and recheck after a few hundred kilometres.

Popular questions about the 2020 Audi Q5 drive-belt tensioner

Does the 2020 Audi Q5 definitely have a drive-belt tensioner?
Yes. Audi’s FY-series Q5 workshop procedures cover the poly-V belt and its spring-loaded tensioner, and the ETKA parts catalogue and major aftermarket catalogues all list a dedicated tensioner for 2.0 TFSI and 2.0 TDI engines. It’s a standard, automatic unit that maintains belt tension without manual adjustment.

How often should the belt and tensioner be replaced?
Inspect at each service and replace on condition. Many workshops in AU/NZ replace the belt and tensioner around 100,000–150,000 km, or sooner if there’s squeal, arm bounce, rough idlers, frayed ribs or any contamination. If the belt is due, it’s smart to do the tensioner and idlers at the same time.

What happens if the tensioner fails on a Q5?
A weak or seized tensioner can cause belt slip or throw the belt, leading to charging faults, A/C loss and potential overheating of driven accessories. Prolonged slip can glaze the belt and damage pulleys. Early diagnosis and replacement prevents collateral damage and roadside dramas.