Preliminary Diagnosis

Preliminary Diagnosis
Question the Customer The preliminary diagnosis starts with the customer interview. The history of the concern must be investigated: When was it first noticed? Did it appear suddenly or gradually? Did any abnormal occurrence coincide with or precede its appearance (such as pothole or curb impacts, minor collisions, etc.)? Were any repair procedures carried out or new parts installed? It is also necessary to know any special conditions (such as road speed, type of road, drive mode, engine temperature, ambient temperature, etc.) affecting the appearance and degree of the concern.

A gradual appearance of the concern indicates a deterioration of a component, such as tires, halfshafts or wheel bearings.

A sudden appearance of the concern could indicate a lost wheel balance weight or seized CV joint.