Commercial Insurance Auto Repair Liability 6 min read

ADAS Calibration and EV Battery Service: The Auto Repair Liability Your Garage Policy Was Not Written For

By Bryant Arthur·Grandbay Financial Services

Published: September 28, 2026 | Last Updated: September 28, 2026

Advanced driver assistance calibration and high-voltage battery work have changed what a repair shop can be sued for. Garage policies written a decade ago do not contemplate either one.

What is the liability exposure in ADAS calibration?

It is a completed operations exposure with severe potential outcomes, which is a combination that garage policies handle inconsistently. Advanced driver assistance systems depend on cameras, radar, and lidar whose aim must be precise, and a windshield replacement, an alignment, a suspension change, a bumper repair, or even a tire size change can require recalibration. If the calibration is not performed, or is performed incorrectly, the system may fail to intervene in a crash or may intervene when it should not. The claim then alleges that your work caused or failed to prevent a serious accident, with damages measured by injury rather than by repair cost. This is fundamentally different from scratching a fender, and it is why documentation of every calibration performed, with the pre-scan and post-scan reports, has become essential.

  • Failure to identify that a repair triggered a required calibration.
  • Calibration performed outside manufacturer specification for lighting, floor level, or target distance.
  • Static versus dynamic calibration requirements not followed per the manufacturer's procedure.
  • Sublet calibration to a third party without verifying their work or their insurance.
  • No pre-scan and post-scan documentation, leaving no record of system status.
  • Aftermarket glass or parts affecting camera performance.

Does garage liability cover a completed operations claim?

It should, and you need to confirm it rather than assume it. Garage liability forms include products and completed operations coverage for the work you perform, which is the relevant grant for a faulty repair claim. What varies is how broadly the form defines your operations and whether any exclusions reach the new services. Read for exclusions relating to faulty workmanship, which generally exclude the cost to redo your own defective work but should not exclude resulting bodily injury or damage to other property. Read for any exclusion relating to electronic or computer systems, which some forms have added. And read for the sublet work provision, because shops increasingly outsource calibration to mobile specialists, and your liability for a subcontractor's error depends on both your contract with them and your policy's treatment of work performed on your behalf.

  • Confirm products and completed operations coverage is included with an adequate aggregate.
  • Check for exclusions relating to electronic systems, software, or programming.
  • Confirm coverage for work performed by subcontractors on your behalf.
  • Collect certificates from mobile calibration vendors and require adequate limits.

What changes when a shop services electric vehicles?

The property exposure changes most, and it changes sharply. A high-voltage lithium ion battery pack can enter thermal runaway, which is extremely difficult to extinguish, burns at very high temperature, can reignite hours or days later, and can emit toxic gases. A single vehicle fire inside a repair building can destroy the building, the equipment, and every customer vehicle in it. Insurers are underwriting this actively, and shops should expect questions about where EVs are parked and charged, whether there is separation from other vehicles, whether charging is done outdoors or in a designated area, whether damaged batteries are quarantined, and whether the fire protection system was designed with this hazard in mind. Some carriers now restrict or decline shops storing damaged EVs, and shops handling collision-damaged electric vehicles should raise it before a loss rather than after.

  • Designated outdoor or separated area for charging and for damaged battery quarantine.
  • Quarantine distance for damaged or suspect packs, commonly 50 feet or more from structures.
  • Sprinkler design and water supply adequacy for a high-energy fire.
  • Technician training and certification for high-voltage work, with lockout procedures.
  • Disclosure to your carrier that you service and store electric vehicles.

Does garagekeepers cover a customer's EV that burns in your lot?

Generally yes if it is a covered cause of loss and the coverage basis is right, but the limit is where shops are exposed. Garagekeepers covers customer vehicles in your care, custody, and control, and the critical questions are the coverage basis and the aggregate. Legal liability coverage requires your negligence, while direct primary coverage responds regardless of fault, which is what customers expect and what many shops should carry. The limit question is arithmetic. If your garagekeepers limit is 250,000 dollars and a fire in your lot involves nine vehicles averaging 45,000 dollars, you are 155,000 dollars short before anyone argues about fault, and electric vehicles push average values higher. Shops should set the limit against a realistic multi-vehicle catastrophe rather than against a single-vehicle incident.

    What other coverages do modernizing shops need?

    Three that are commonly missing. First, cyber liability, because shops now hold customer data, run cloud-based management systems, connect to manufacturer diagnostic portals, and in some cases can access vehicle telematics. A ransomware event that locks your management system stops the business entirely. Second, equipment breakdown, because calibration rigs, alignment racks, paint booth systems, air compressors, and lifts are expensive and property policies exclude mechanical breakdown. Third, pollution and waste handling coverage if you have not addressed it, since solvents, refrigerants, and waste fluids create exposures excluded from general liability.

    • Cyber liability for management systems, customer data, and manufacturer portal access.
    • Equipment breakdown for calibration equipment, lifts, compressors, and paint systems.
    • Pollution coverage for solvents, refrigerants, and waste fluid handling.
    • Business income with an indemnity period matched to realistic rebuild time.

    Ready to review your garage program?

    If your shop has added calibration or electric vehicle work since your policy was written, the coverage almost certainly has not kept up. Grandbay Financial Services reviews garage programs for collision and mechanical shops. Book a review at calendly.com/grandbayfinancial.

    Frequently Asked Questions

    This article is for general information and is not a substitute for policy language or professional advice.

    If your shop has added calibration or electric vehicle work since your policy was written, the coverage almost certainly has not kept up. Grandbay Financial Services reviews garage programs for collision and mechanical shops. Book a review at calendly.com/grandbayfinancial.

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