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post #637 of (permalink) Old 7th April 2007
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Further Comment on Engineer's Report 'Conclusion'

Renault's conclusion is as follows:

In view of the fact that there is no evidence to suggest that the cause of the incident can be attributed to the manufacturer , it is believed that the most likely cause of the bonnet opening whilst being driven was that it was not fully closed.

Had there been a defect with the locking mechanism, when inserting the lock striker during our investigation, one would have expected the striker to have not located in the lock mechanism correctly. The mechanism has not been operated since the bonnet opened whilst driving, as the damaged sustained to the bonnet prevented the bonnet from being closed in the shut position
A few points on this last "conclusion" note (quoted from the Engineer's report after the inspection on my vehicle):

Point 1: So they contribute the fact that there was is no evidence of an issue of design/manufacturing, so this alone implies it was the closure of the bonnet at fault.
  • They couldn't and haven't commented on why both the main and safety catch did not function?
  • There was no comment as to whether corrosion was due to lack of maintenance.
  • Corrosion on a safety catch is of a concern - esp since the last major service was just 5-6 mths prior to the incident, and more importantly, the car was less than 3 years old.

Point 2: Bonnet not fully closed.
  • So this mean both catches weren't engaged (bonnet just resting - bonnet ajar), or just on safety only...I guess they need to elaborate what they mean on this point.
  • Possibility then that the bonnet was closed (flush), but the catches didn't engaged fully? This comment also fits this statement, and could confirm why having checked the closure of the bonnet (in accordance to manual, blah blah blah), it seemed secure, when tugged.

Point 3: Defect would have meant the lock striker wouldn't engage correctly
  • Assuming lock stiker is the main catch pin?
  • But there no evidence that the lock striker DID engage correctly either, so the report didn't actually prove or disprove that the main catch was engaged correctly or not!
  • Possibility that the catch (stiker) was engaged, but not fully/correctly, meaning it could have released itself without damaging the striker pin.

Point 4: Mechanism not operated since the bonnet suffered damage
  • This meant that there could not be a re-construction of the actual status prior to the incident.
  • Again, doesn't prove nor disprove that the bonnet catches didn't release themselves without damaging the catch mechanism.


Aaron Brigatti
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