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BMW-Sauber insist the mechanic hospitalised after suffering an electric shock when he touched a car fitted with the team's new Kinetic Energy Recovery System last month was never in any serious danger.

Following what BMW described as an "extremely far-reaching analysis" into the incident, which occured when the mechanic collapsed to the ground at Jerez as he attempted to wheel a car fitted with the device back into its pitbay.

"The mechanic suffered an electric shock after touching the sidepod and steering wheel of the car," said BMW's head of powertrain development Markus Duesmann.

"There was a high frequency AC voltage between these contact points, the cause of which has been traced back to the KERS control unit and a sporadic capacitive coupling from the high-voltage network to... // autosport.com

BMW Sauber has concluded its investigation into the alarming incident in late July when one of its mechanics received an electric shock during testing at Jerez after touching a car fitted with a Kinetic Energy Recovery System (KERS).

The mechanic escaped with only minor grazing to his left hand and arm, but the incident prompted fresh concern over the safety of the KERS devices after Red Bull Racing had already suffered a fire scare at its factory triggered by a battery failure.

After what it described as "an extremely far-reaching" inquiry BMW has revealed details of... // ITV.com