Pastor Maldonado's car suffered a KERS failure in the garage two-and-a-half hours before the start of Saturday morning practice for the German Grand Prix.
The Williams Formula 1 team has confirmed that fire marshals attended the scene and contained the situation, which did not cause any injuries.
It is as yet unclear what damage the KERS problem has done to the car, with Williams currently investigating the incident.
"At 0830 this morning, the Williams F1 team suffered a KERS failure on Pastor Maldonado's car," said a Williams statement. "The car was in the garage at the time.
"The resulting smoke was contained quickly and efficiently by the team and circuit fire marshals. No personnel were injured.
"The team are currently investigating the cause of the failure, and assessing any further damage to Pastor's car.
"More information will be released once the team are in a position to do so."
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