Mechanical, Electrical, and Interior Component Damage
Scope beyond sheet metal
A complete estimate accounts for mechanical, electrical, and interior damage. Candidates must understand R&I of components to access body repair (bumpers, lamps, cooling packs, harnesses, interior trim, seats, headliners) and when R&I becomes replacement. Know cooling system components, suspension and steering inspection after impact, wheel and tire damage, and ADAS sensors (cameras, radar, ultrasonic) that require calibration after R&I or alignment.
Electrical and interior
Understand harness inspection, connector damage, and battery handling for hybrids/EVs. Know interior assessment: airbag deployment damages dash, seats, and trim; seatbelt pretensioners and clock springs are one-time-use items. Understand HVAC and infotainment components and that some require programming.
Traps
Common traps: forgetting calibration after bumper or windshield work; assuming a deployed airbag only requires the bag; and overlooking blend/clear on interior-adjacent panels. Another trap is treating a pretensioner as reusable.
Worked example / rule of thumb
Rule of thumb: if you R&I it, ask whether it needs calibration or programming. Example: front bumper replacement on a vehicle with a forward radar - estimate includes R&I of the sensor, replacement of the bracket if damaged, and radar calibration per OEM procedure, plus scan for codes.