00 General, Technical Data: Introduction

The normal operation of a vehicle causes ordinary noises and vibrations to occur. However, alarming sounds and noises can occasionally occur, which may be a result of other conditions, such as malfunctions, wear and/or aging. These noises can sometimes serve as a warning of possible damage that may occur in the near future.

It should be treated as a problem, if the customer senses noises or vibrations are unusual.

Even noises that are not very loud can be a cause of concern for the customer. It could be a new noise that was not heard before or an unusual noise for the customer. It is therefore absolutely necessary to perform an inspection based on the customer complaint.

It is helpful to know the characteristics and theories of sound in order to allocate and identify these noises.