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newSchoolWorks.com › VoTechWorks › Transportation › Auto Body & Collision › Collision Repair Estimating › Lesson 2
TRN-AUTO25-06 · Lesson 2 · 16.5 clock hours · demo

Damage Analysis: Walk-Around and Inspection Methods

Objective. Students perform a structured walk-around inspection on a collision-damaged vehicle and document all visible and suspected hidden damage on a standardized inspection worksheet.

⚠ Pending professional review

This lesson, its worked examples and its practice questions has not yet been verified by a certified examiner or master technician in the trade or by a certification or approval body. It is a study draft and may contain errors. Do not use it as instructions for work on a job site or on live equipment. Always follow your instructor, your supervising professional, and current official references and regulations.

VoTechWorks program approval and accreditation are still in progress. Credentials are issued only by the certifying bodies named in each program, after their own exams.

Why a Structured Walk-Around Matters

Every collision repair estimate begins with a thorough damage inspection. Skipping steps or working from memory leads to missed damage items, which become missed lines on the estimate. Missed lines mean supplements, delayed repairs, unhappy customers, and lost shop revenue. A structured, repeatable walk-around inspection solves this problem by giving you a defined route and a written record of everything you find—visible damage and suspected hidden damage alike.

In the collision repair trade, the walk-around is not a casual look at the car. It is a disciplined, zone-by-zone examination of the entire vehicle that you document on a standardized inspection worksheet as you go.

Safety Before You Begin

Before approaching any collision-damaged vehicle, take these precautions:

The 360-Degree Walk-Around Sequence

A consistent route prevents skipped zones. The industry standard practice is to begin at the driver's front corner and move clockwise around the vehicle, ending where you started. Divide the vehicle into zones:

1. Front Clip – bumper cover/fascia, grille, hood, headlights, cooling stack (radiator, condenser, fans), upper tie bar, lower rail tips.

2. Driver's Side (A-Pillar and Front Quarter) – A-pillar, fender, door (front), mirror, glass.

3. Driver's Side Rocker and Center – rocker panel, floor visibility from underneath (if accessible), B-pillar, rear door.

4. Driver's Rear Quarter – quarter panel, wheel well, C-pillar or D-pillar (on four-door), glass.

5. Rear Clip – trunk lid or liftgate, taillights, bumper, rear fascia, rear rails, spare tire area.

6. Passenger's Rear Quarter – mirror image inspection of zone 4.

7. Passenger's Side Center and Rocker – mirror image of zone 3.

8. Passenger's Side Front Quarter and A-Pillar – mirror image of zone 2.

9. Roof and Glass – roof panel, drip rails, all glass for cracks or chips, sunroof if equipped.

10. Mechanical and Undercarriage – steering, suspension, tires, brakes, exhaust, frame or unibody rails.

Work slowly. Crouch down to sight along panels in natural or shop light; indirect light reveals waves and creases that straight-on viewing misses. Use your flashlight to examine recessed areas and your inspection mirror to look behind bumper fascias, inside wheel wells, and under brackets.

Visible vs. Suspected Hidden Damage

Visible damage is anything you can see directly: bent metal, cracked plastic, broken glass, missing fasteners, paint damage, fluid leaks.

Suspected hidden damage is damage you cannot yet confirm but that logic and experience tell you is likely given the collision mechanics. For example: a heavily damaged front bumper beam almost always means the radiator support and rail tips should be flagged for further inspection once disassembly begins. Document both categories separately on your worksheet.

Never assume damage stops at the obvious crease. Energy travels through the structure. A rear impact that collapses a trunk floor may have pushed force into the rear wheel houses and even the floor pan. Your job at the walk-around stage is to record what you see and note every zone that deserves a closer look during teardown.

Completing the Inspection Worksheet

Your worksheet should capture, for every item:

Write legibly and be specific. "Left front" is not the same as "driver's front fender." Use the component names found in estimating databases (such as Mitchell or CCC ONE) because your worksheet will feed directly into the written estimate.

How Missed Items Cost Everyone

If you miss a damaged inner rail during your walk-around and it does not appear on the original estimate, the shop must write a supplement—an additional claim—after teardown. Supplements delay repairs, require insurer re-approval, and can create disputes. Shops that consistently identify damage accurately during inspection build better relationships with insurers, customers, and employers. Thoroughness at the walk-around stage is a professional and financial skill, not just a classroom exercise.

Key terms8

Walk-Around InspectionA structured, zone-by-zone examination of a collision-damaged vehicle performed in a consistent sequence to identify all visible and suspected hidden damage before an estimate is written.
Visible DamageDamage that can be directly observed without disassembly, such as bent panels, cracked plastic, broken glass, or fluid leaks.
Suspected Hidden DamageDamage that cannot yet be confirmed visually but is anticipated based on collision mechanics, impact direction, and energy transfer through vehicle structure; flagged for verification during teardown.
ZoneA defined section of the vehicle used to organize the walk-around sequence; common zones include front clip, rocker, quarter panel area, rear clip, and roof.
SupplementAn additional estimate written after teardown when damage is found that was not included in the original repair estimate, often caused by incomplete inspection.
Damage Inspection WorksheetA standardized written form used to record each damaged component, its zone, damage type, severity, and whether the damage is visible or suspected hidden; the primary document that feeds the estimate.
Indirect Lighting TechniqueCrouching down and viewing a panel from a low angle so that light skims across the surface, revealing waves, low spots, and creases that straight-on inspection misses.
High-Voltage IsolationThe procedure required before inspecting or repairing hybrid and electric vehicles, ensuring the high-voltage system is de-energized and locked out before contact with orange high-voltage cables or related components.
In class: Instructor demonstrates the 360-degree walk-around sequence on a wrecked vehicle, narrating each zone (front clip, A-pillar, rocker, quarter, rear clip, glass, mechanical) while students annotate a blank vehicle diagram. · Students practice the inspection in pairs on two different damaged vehicles in the shop, completing a written damage worksheet for each vehicle independently. · Pairs compare worksheets and reconcile discrepancies, then instructor reviews the master damage list and explains how missed items become missed lines on the estimate.
Materials: Two collision-damaged vehicles, standardized damage inspection worksheet (instructor-created), vehicle zone diagram handout, flashlight, inspection mirror, measuring tape, gloves, safety glasses
Check: Instructor reviews each student's completed damage worksheet against the master; pass = identification of at least 85% of listed damage items with correct zone and component labeling.

Practice check8

Answer each question, then check it. Nothing is recorded; this is your own practice.

Damage Analysis and Estimating
1. What is the primary reason for following a consistent, zone-by-zone walk-around sequence rather than inspecting damage in the order you notice it?
Structural Damage Analysis
2. During a walk-around on a rear-impact vehicle, you notice the trunk floor is collapsed. Which additional area should you flag as suspected hidden damage?
Shop Safety and PPE
3. Which PPE items are required at minimum before beginning a walk-around inspection on any collision-damaged vehicle?
Shop Safety and PPE
4. You are about to inspect a collision-damaged vehicle and notice orange cables routed along the undercarriage. What should you do before proceeding?
Damage Analysis and Estimating
5. An estimator documents a damaged component as 'left front dent, moderate, visible.' What critical piece of information is still needed to complete the worksheet entry correctly?
Damage Analysis and Estimating
6. Which technique is most effective for identifying low spots, waves, and shallow creases on a body panel during a walk-around inspection?
Damage Analysis and Estimating
7. A supplement is most directly caused by which failure during the original inspection and estimating process?
Structural and Mechanical Damage Analysis
8. During the walk-around, you observe that the front bumper cover is cracked and the bumper beam behind it is visibly pushed rearward. The radiator has no obvious external damage. How should you record the radiator on the worksheet?
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