Parts for your 2018 Audi Q5-Drive belt pulley

2018 Audi Q5 drive-belt pulley

Yes, a drive-belt pulley is fitted to the 2018 Audi Q5. Technical sources including the Audi Workshop Manual (erWin/ELSA) for the FY-series Q5 (Repair Group for Poly V-belt drive), the Audi ETKA electronic parts catalogue (listing the crankshaft vibration damper/drive pulley, idler and tensioner pulleys), and major parts catalogues from Gates/Dayco and INA/Schaeffler (overrunning alternator pulley/OAP) all specify an accessory drive using a ribbed (Poly V) belt on the 2.0 TFSI and 3.0 TDI engines. While the Q5 uses electric power steering (so no power-steering pump pulley), the belt still drives the alternator and A/C compressor via a crankshaft pulley, tensioner and idlers.

On this Q5, the drive-belt pulley system transfers crankshaft rotation to essential ancillaries. The crank pulley (which doubles as a vibration damper) turns the belt, the belt, tensioner and idler pulleys keep everything tracking nicely, the alternator’s overrunning pulley smooths out torsional spikes, and the A/C compressor pulley keeps cabin comfort sorted. It’s all about reliable charging, cool air and a belt that runs quiet and straight under changing loads and start–stop cycles.

As part of regular servicing, it’s smart to inspect the belt and pulleys every 12 months or 15,000 km. Audi doesn’t set a hard-and-fast interval for all markets, but a practical window many workshops use for the Q5 is around 90,000–120,000 km or 6 years for the belt, with the tensioner, idlers and alternator OAP assessed and often replaced together. On high-kilometre cars or vehicles that see lots of stop–start, the alternator pulley and tensioner deserve extra attention.

• Tell-tales: chirping or squealing at idle, belt cracking/glazing, a fluttering tensioner, battery warning light, weak A/C at idle, or a wobbling crank damper.
• Good practice: replace the belt, tensioner, idlers and OAP as a kit, verify damper condition, follow torque specs and one-time-use fasteners per the Audi Workshop Manual, and use the correct special tool for the alternator pulley.
• Quality parts: OE or reputable brands (as cross-referenced in ETKA and major catalogues) keep noise down and alignment true.

If any noise or wobble appears, don’t leave it—belt or pulley failure can quickly take out charging and accessory functions. A neat, quiet belt run under the bonnet is the giveaway that the Q5’s drive-belt pulleys are doing their job.

Popular questions about the 2018 Audi Q5 drive-belt pulley

Does the 2018 Audi Q5 have multiple pulleys or just one?
It has several: a crankshaft pulley (vibration damper), a spring-loaded tensioner pulley, one or more idler pulleys, and an overrunning alternator pulley. The A/C compressor is belt-driven too. There’s no power-steering pump pulley because steering is electric on this model.

When should the belt and pulleys be replaced?
Inspect at every service. Many technicians plan belt replacement around 90,000–120,000 km or 6 years, replacing the tensioner, idlers and alternator OAP at the same time. Any noise, wobble, cracking or charging issues warrant earlier attention.

What are symptoms of a failing alternator OAP or crank damper?
Expect chirps at idle, a dancing tensioner, intermittent battery light, or belt “shiver” on shutdown for the OAP. A failing damper may show pulley wobble, rubber delamination and vibration. Either fault can accelerate belt wear—sort it promptly.