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Home >> Porsche >> 2015 >> Macan Turbo >> Repair and Diagnosis >> External Pages >> Different car >> Section 362 (Rear Drive Axle/Differential - Vehicles Without: Active Driveline -- Discovery Sport/L550) >> Rear Drive Axle/Differential - Vehicles Without: Active Driveline >> Diagnosis And Testing >> Rear Drive Axle And Differential >> Identify The Condition >> Bearing Whine

Bearing Whine

WARNING: This page is about a different car, the 2018 Land Rover Discovery Sport, 2017 Land Rover Discovery Sport, 2016 Land Rover Discovery Sport, and 2015 Land Rover Discovery Sport. However, it is still accessible from the selected car via links, so may be relevant.

Bearing whine is a high-pitched sound similar to a whistle. It is usually caused by worn/damaged pinion bearings, which are operating at driveshaft speed. Bearing noise occurs at all driving speeds. This distinguishes it from gear whine which is speed dependent.

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As noted, pinion bearings make a high-pitched, whistling noise, usually at all speeds. If however there is only one pinion bearing that is worn/damaged, the noise may vary in different driving phases.

A wheel bearing noise can be mistaken for a pinion bearing noise.

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