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Will the glow plug light fail current MOT Test - confusion?

Discussion in 'Electrics, Vacuum, Ignition and ECU' started by pcman_jh, Dec 17, 2012.

  1. pcman_jh

    pcman_jh Senior Member

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    Joined:
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    Location:
    Haddington
    Your Mercedes:
    2013 E220 Cabriolet
    My CLS320 glow plug light is coming back on for about 30seconds which means a glow plug (or two) are dud, however, there's vagueness about the new MOTs checks on warning lights.

    Depending on what you read, there are specific warning lights that are definitely checked, and there's some folk who say ANY warning light will cause a fail - who's correct?

    My car starts absolutely fine so I was just going to ignore the warning lamps.

    Heard about a colleague who's BMW failed its MOT because the turn indicators lights were not working in his console- it cost £600 but BMW paid the majority as it was just out of warranty - yikes?
     
    Last edited: Dec 17, 2012
  2. Ricardo_e220

    Ricardo_e220 Senior Member

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    Your Mercedes:
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    My wife's a class has the same and has just passed its mot ok, make sure the car is hot when it goes in and the lights will be ok as long as they extinguish as I was told by my indie
     
  3. Steve@Avantgarde

    Steve@Avantgarde Forum Supporter Authorised Forum Supporter

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    C220CDI AMG Line Premium, SLR McLaren Roadster, SL55 & C32AMG
    No. The glow plug light is not the engine management light which as I understand, will now fail the MOT if it is permanantly lit.
     
  4. livergard

    livergard New Registration

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    I had this problem with my a class however I failed my mot test. Which meant I had to replace it
     
  5. Miffy

    Miffy Senior Member

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    Your Mercedes:
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    what was the failure reason given?
     
  6. neilp

    neilp Active Member

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    Your Mercedes:
    W211 E320CDi Estate 2003
    The only dash lights that will fail the MOT are ABS lamp, turn signal telltales and mainbeam telltale. None of the others are testable items. Some or all of them may?will come into the scope of the test at some date in the future, but there is no certainty on this yet.

    Lots of confusion around this, but that's the bottom line

    Neil
     

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