Toyota have said that Timo Glock's accident in the German Grand Prix was caused by damage sustained two weeks earlier in Britain.
Suspension fault picked up at Silverstone
Toyota have said that Timo Glock's accident in the German Grand Prix was caused by damage sustained two weeks earlier in Britain.
The German crashed at Hockenheim after his rear suspension failed as he entered the start-finish straight - Glock's car spinning before hitting the pit wall at speed.
The force of the impact was sufficient for Glock to be admitted to hospital overnight for observation purposes.
Glock's car used components which were also used in the British Grand Prix a fortnight earlier - the 26-year-old joining a number of his rivals in leaving the Silverstone track during a race run in wet conditions.
However, with the parts being passed fit to use at Hockenheim, Glock's subsequent shunt has left Toyota promising to tighten up their inspection procedure.
"Following Timo Glock's incident during the German Grand Prix at Hockenheim, Toyota Motorsport initiated a thorough investigation," a team statement read.
"This initially established that a rear toelink (trackrod) gave way causing Timo to lose control of the car, but confirmed that there were no exceptional circumstances before or during the incident in the German Grand Prix.
"Further investigation has established that damage sustained in the British Grand Prix two weeks earlier was the cause. During that race Timo suffered several incidents.
"As is normal practice, some parts from the British Grand Prix were carried over to Hockenheim, including most of the rear right suspension.
"Although the parts were subjected to the normal test and screening process following the Silverstone race and passed fit for use at Hockenheim, it has become apparent that it did not identify an issue which subsequently led to the incident at Hockenheim.
"As a result of this investigation, Toyota Motorsport has revised its inspection processes to include such cases and is extremely confident there will be no repeat."
Following his release from hospital, Glock has since tested at Jerez and will race at this weekend's Hungarian Grand Prix.