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Warranty Adjuster Denies Claim After Technician Correctly Identifies Root Cause

Evidence sufficient to fix the car, insufficient to pay for it.

Fintan O'Malley 3 min read The Mechanic's Manual
Warranty Adjuster Denies Claim After Technician Correctly Identifies Root Cause

Warranty Adjuster Denies Claim After Technician Correctly Identifies Root Cause

The denial landed as a portal message at the top of the morning queue, and the service writer read it twice before walking the printout out to the bay: insufficient evidence of component failure, claim denied.

Two days earlier a 2014 sedan had come in with a stumble on hard acceleration, worse cold. Dorian Marrow, who arrived once to help for a weekend and has not managed to leave, pulled the codes, watched the misfire counter roll on cylinder four, and then did the thing the old hands keep asking about around here: he checked the ground. The eyelet where the engine harness grounds to the firewall had gone to green powder. Load-tested, the circuit dropped 0.6 volts it was never supposed to carry. The coil, the plug, the lead, all tested in spec, all still in the car.

The repair took twenty minutes and no parts. Cut back, re-terminate, torque, verify. The car left quiet.

Then the message. The claim had been authorized under line item "ignition coil, cylinder four." The adjuster's note read, in full: no failed component identified as authorized; replacement part not installed; diagnosis does not support claim.

"So the coil didn't fail," the service writer said, "which is why we're getting paid for a coil."

"The coil didn't fail because we found what did," said the veteran, not looking up.

Quentin Sato, who runs the competing group across town and shares half its members, sent a photo of his own ticket: same model, same stumble, coil swapped under the same authorization, paid in four days. "We didn't check the ground either," he wrote. "Turns out not checking it is faster."

They appealed with the load-test numbers, the before-and-after capture, and a photograph of the eyelet. The reply took two days. Corrosion, the adjuster wrote, is a condition rather than a component failure, and conditions are maintenance, not warranty. Furthermore, the original authorization had expired on the fourteenth, so any corrected claim would need to enter as new business under a fresh authorization.

Dorian taped the failed eyelet inside his toolbox drawer, where he keeps parts until he can name the mechanism. He can name this one.

At the counter the apprentice did the arithmetic out loud: replace the coil and get paid for a coil, and the customer returns in two weeks with the same stumble. Nobody corrected him.

The veteran looked from the printout to the bay. "Did anyone check the ground first?"

"Yes," said Dorian. "That's the problem."

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