Dangerous to drive

It is not often that I feel the need to highlight something on the VT30 failure notice as being dangerous to drive, just recently I have had to use it for brakes and suspension faults. The first case being a pair of rear  leaf springs on a Ford Transit which had fractured at the anchor end spring eye, the only thing holding the spring in place being the weight of the vehicle bearing on the spring eye.


The spring can clearly be seen, from the rust “witness marks” to have worn away at the anchor bracket where it has been moving sideways.

leafspringAnother pair of items to crop up under the dangerous to drive tag was a a pair of front brake hoses on a Ford Maverick these had deteriorated so badly that the braided innards of the hoses were clearly visible













Earlier in the day a customer had brought us a Mercedes ML320 with a pad warning light on, and asked us to replace the front brake pads as he’d done the rears, or friend had, to save some cash.  Once we’d removed the wheels to replace the front pads we knew they were not the reason for the warning light being illuminated, so we turned to the rears to check the wear sensor wire, immediately noticeable was  the thread of a brake caliper bolt and therefore the lower end of the caliper was not secured and had broken the sensor wire, thus causing the light to come on.


Had this been the upper caliper bolt it is quite possible that if the caliper had been caught by the wheel rim it would have caused serious damage to the wheel, the caliper and the caliper bracket, with the wheel quite possibly locking up .


Incidents like these are rare but unfortunately they do happen, which is why we have Mot’s, no matter how a good a mechanic you are, or think you are, another pair of eyes checking the work afterwards can be an extra safeguard for vehicles on our busy roads.


2 comments so far

  1. John Dent on

    The centre of the brake hoses. Assuming the hose had the metal ring in the centre do you think you would have any issue if the hose was attached securely to the car with a stainless steel tie as opposed to a bracket?

    • an Mot tester on

      Personally as it is described I would have no problem accepting a zip tie or stainless steel tie retaining the hose in place, the testers manual lists no rfr on the VTS device with regards to security of flexible hoses.

      However if the hose is insecure enough to foul another component then that is a rfr, A zip tie or stainless tie retaining the hose in place could conceivably fall under the modification label, therefore it’s essential that the repair is looked at and assessed in situ with regard to the criteria listed in the manual. http://www.motinfo.gov.uk/htdocs/m4s03000601.htm sections 3.6.A3 and 3.6.B4

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