On July 26, 2005 the National Highway Traffic Safety Administration (NHTSA) opened an investigation into potentially faulty electronic throttle controls on more than 260,000 Volvo cars and sport utility vehicles.
The models affected by the probe include the 1999 to 2001, C70, S60, S70, S80, V70 and V70XC.
The investigation follows a lawsuit in California alleging that Volvo knew the parts, called engine control modules, were defective and failed to alert vehicle owners. A Volvo spokesman said the company was "cooperating with NHTSA."
The NHTSA office of defects investigation (ODI) has already received 131 consumer complaints alleging a variety of concerns resulting from the failure of the electric throttle control module (ETM) in the subject vehicles, including a sudden loss of speed and steering assist when driving in highway traffic and sudden and complete stall without warning.
In some instances it has been reported that the vehicles would restart, and in some cases the vehicles were towed. Some consumers allege that after having the ETM repaired the new component failed in a similar manner.