Is SRS light an automatic MOT failure?
Discussion
I've got an SRS light on my dashboard and I can't get it turned off. Is it 100% a failure if the light is on?
I read this and it seems like all the MOT tester should be checking is whether or not the SRS system knows it has a fault. i.e. even if it is sensing a fault the fault itself isn't a failure. It would fail if the SRS light never illuminated (i.e. indicating a dash bulb failure)
https://mattersoftesting.blog.gov.uk/common-mistak...
I read this and it seems like all the MOT tester should be checking is whether or not the SRS system knows it has a fault. i.e. even if it is sensing a fault the fault itself isn't a failure. It would fail if the SRS light never illuminated (i.e. indicating a dash bulb failure)
https://mattersoftesting.blog.gov.uk/common-mistak...
pti said:
Yep.
"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.
Where passenger air bags are present it is also often possible to disarm them, or they may automatically disarm where there is little or no weight on the passenger seat. This may be accompanied by a lamp permanently on to highlight the airbag has been disarmed, this is not considered a SRS MIL, and therefore isn’t a reason for rejection."
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ingenieur said:
"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.
Where passenger air bags are present it is also often possible to disarm them, or they may automatically disarm where there is little or no weight on the passenger seat. This may be accompanied by a lamp permanently on to highlight the airbag has been disarmed, this is not considered a SRS MIL, and therefore isn’t a reason for rejection."
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If the light is permanently on, then the light isn't necessarily showing there is a failure. I'd be failing it based on that. "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.
Where passenger air bags are present it is also often possible to disarm them, or they may automatically disarm where there is little or no weight on the passenger seat. This may be accompanied by a lamp permanently on to highlight the airbag has been disarmed, this is not considered a SRS MIL, and therefore isn’t a reason for rejection."
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