The National Highway Traffic Safety Administration had opened safety investigations into the reported problems with both Chrysler-made sport utility vehicles last year.

In two cases, Jeep Liberty drivers reported suffering minor burns resulting from fires triggered by a problem with the blower motor in the vehicle's air-conditioning system, a Chrysler spokeswoman said.

There were no injuries reported as a result of the Durango fires, and no accidents had been reported as a result of the defects in either of the vehicles, Chrysler said.

Chrysler, which faces a possible sale by its German parent company, also said it would service up to 149,605 Jeep Liberty vehicles because of a problem with the blower motor in the air-conditioning system. Chrysler said in some cases the motors could fail, particularly in hot weather.

That recall affects 2006 and 2007 model-year Jeep Liberty vehicles.

Chrysler had received reports of 12 fires involving the Liberty and 66 fires for the Durango, Chrysler spokeswoman Kristin Tyll said.