Hyundai Unibody Straightening: Advanced Steels and Repair Limits

Hyundai makes extensive use of advanced high-strength steel. Learn how that affects measuring, straightening and part replacement after a crash.

Steel Built In-House

Hyundai Motor Group is unusual among automakers because an affiliated company, Hyundai Steel, produces much of the steel used in its vehicles. Hyundai promotes the use of advanced high-strength steel throughout its body structures to improve crash performance and stiffness.

Why That Matters for Straightening

Advanced high-strength and hot-stamped steels are strong, but they do not tolerate being bent back and forth. Hyundai's repair information limits straightening on many structural parts and prohibits heat on others. When a part is outside those limits, it is replaced or sectioned at approved locations.

The Measuring Process

We place the vehicle on a bench and compare it to Hyundai's dimensional data. Measurements reveal whether rails, aprons or floor sections have moved. For vehicles like the Palisade and Santa Fe, rear impacts often shift the rear floor and rails; for sedans, front rails are commonly affected.

The Santa Cruz

The Santa Cruz is a unibody pickup, so its bed and cab are part of one structure. Rear impacts can affect the bed area and cab structure together, and measuring confirms the extent.

Completing the Repair

Once dimensions are correct, panels are fitted and gaps checked. Wheel alignment and SmartSense calibration follow.

Frequently Asked Questions

Can a bent Hyundai rail be straightened?

Sometimes, within Hyundai's limits. Otherwise it is sectioned or replaced.

Why can't heat be used?

Heat can permanently weaken high-strength steels.

Is the Santa Cruz body-on-frame?

No. It uses a unibody structure.

See our frame repair page.

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