Case study: Cabin vibration at motorway speeds

21/02/20

As a technician, there are a number of customer complaints that you know are going to be a real challenge, one of which is cabin vibration. Come to think of it, there is a number of customers who are going to be a challenge but that’s a discussion for another time.

Complaints of cabin vibration are subjective and depend on a number of human factors, such as tolerance levels, expectation and misinterpretation.

Tackling complaints of Noise-Vibration-Harshness (NVH) is no different from how we approach any diagnostic challenge. We apply a process that will deliver results we can apply to make an informed decision on how to proceed to be able to make a conclusion. Note, however, that the conclusion may not be a fix but still be satisfactory to all parties involved!

If I could give one tip to anyone faced with such a challenge, keep notes and capture/save objective data.

The following case study is one such example.

The customer reports that vibration can be felt through the vehicle at approximately 75 mph. The symptom has been present for over 2.5 years, and they have had numerous attempts to resolve the issue.

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