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Autodata technical Issue 42 - Whining noise under vehicle when driving 2016 BMW 1 Series over 55mph

Autodata technical Issue 42 - Whining noise under vehicle when driving 2016 BMW 1 Series over 55mph

30 June 2021

Each month the Autodata team answers a common technical question and provides a printable document with technical diagrams to download and keep, exclusively for IGA members.

Q. A customer’s 2016 BMW 1 Series has a whining type noise coming from under the vehicle when driving above 55 mph (90 kph). We have experienced the noise on road test but cannot find the source of the fault in the workshop. We have checked all of the screws holding the underbody shields are to the correct torque. We cannot see anything that would be causing this noise. Can you help?

A. Yes, we have come across this fault on several BMW models and it is due to excessive clearance between the front and centre underbody shields. Remove the centre underbody shield. Thoroughly clean underbody in area indicated (Fig. 1.1.).

Fit foam pad, available from BMW parts department, to cleaned area. Refit centre underbody shield. Carry out road test to ensure noise has been eliminated.

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