Both side sensors are present and Typecastboy was kind enough to give me a couple of spares to try as well.
What I really need to do is invest in MES (so I can stop bothering him for a start) and work through the issues.
My gut instinct is a cable issue since swapping the ECUs has not changed the logged fault.
I reckon a while back an honest owner had this issue and was unable to resolve it through the dealer network (the car appears to have had a good service history up until a year or so ago) ultimately it was part exchanged it or sold it on.
I think at that point it was in the hands of people who wanted to make a quick buck and rather than investigate any issue they sought to disguise it.
I know that a warning light that illuminates but fails to go out is an MOT failure, but for SRS if it fails to illuminate at all it is not a failure.
https://mattersoftesting.blog.gov.uk/common-mistakes-made-by-mot-testers/
So by removing the lights they managed to get it through the MOT because the warning message is not considered.
What I really need to do is invest in MES (so I can stop bothering him for a start) and work through the issues.
My gut instinct is a cable issue since swapping the ECUs has not changed the logged fault.
I reckon a while back an honest owner had this issue and was unable to resolve it through the dealer network (the car appears to have had a good service history up until a year or so ago) ultimately it was part exchanged it or sold it on.
I think at that point it was in the hands of people who wanted to make a quick buck and rather than investigate any issue they sought to disguise it.
I know that a warning light that illuminates but fails to go out is an MOT failure, but for SRS if it fails to illuminate at all it is not a failure.
https://mattersoftesting.blog.gov.uk/common-mistakes-made-by-mot-testers/
When testing SRS MIL (Malfunction Indicator Light) lamps we are only looking to see if the lamp indicates if there is a fault with the system. If no lamp is present or it doesn’t illuminate then it can’t indicate a system fault, so it can’t be failed. Some vehicles may also incorporate warning messages on dash board displays; these are in addition to any MIL lamps and should not be used as a reason for rejection.
So by removing the lights they managed to get it through the MOT because the warning message is not considered.
The test of the SRS warning lamp, along with a host of other items, was only introduced into the MOT test as a result of Directive 2010/48/EU. These new items were going to increase the complexity to the test at a time when the political ideal was to reduce the regulatory burden. For this reason, our remit was to include nothing additional in the test that was not required by the Directive.
As a result, an SRS MIL indicating a system malfunction was included, but as the Directive does not specify a failure for an SRS MIL being inoperative this could not be added. For the same reason, SRS checks (and other 'new' checks) do not apply to Class 3 vehicles.
However, to keep things in perspective, it must be remembered that 'SRS', as is in the name, is a supplementary rather than a primary safety system. Also we are now checking a host of items that were not previously included, so it is a step in the right direction.
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