The National Highway Traffic Safety Administration has opened a probe into a recall remedy for an airbag issue in over 740,000 Jeep vehicles.

Approximately 744,822 2002-'03 Jeep Liberty and 2002-'04 Jeep Grand Cherokee SUVs are affected by the recall.

Chrysler has told federal safety regulators that it has received at least six complaints of inadvertent airbag deployment after the recall was conducted, according to NHTSA.

"No crashes were reported, however, injuries consisting of cuts and burns were alleged," said NHTSA in its summary of its recall "query."

Some owners have told NHTSA that the airbag warning light or/and chime activated only second before the inadvertent airbag deployment. Others have said no airbag warning light came on at all.

The vehicles were originally recalled back in 2012 to repair a filter that could degrade and result in an inadvertent airbag deployment while the vehicle was being used on the road.

"In each case, the remedy filter had been installed in the vehicle," NHTSA said.

Chrysler is fully cooperating with the investigation, according to Edmunds.

"Chrysler Group advised the National Highway Traffic Administration of the reports and, in accordance with the Company's long-standing practice, is cooperating fully with the resulting investigation," Chrysler said in a statement. "Customer safety is paramount at Chrysler Group."

Safety regulators have said they have opened a recall "query" to "investigate the effectiveness of the remedy for (the) recall."

The vehicles have not been recalled yet.

Consumers will have to wait for safety regulators to finish their work before a decision has been made on whether the vehicles will be recalled.

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