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W221 S320 CDi Glow plug relay module replacement
24-06-2018, 07:21 AM,
Post: #1
YTMercedes  W221 S320 CDi Glow plug relay module replacement
Re: W221 S320 CDi Glow plug relay module replacement

I kindly seeking for your kind advise regarding the above subject. I ve replaced a new glow plug relay module on the W221 S320 Cdi that has different part number (642 900 78 00 instead of 642 900 28 00). The check engine and glow plug lights are on and the error I am getting on star is '' lack of power on output stage''. As per your experience, could you kindly advise on what to do or if I Am I required to carry out SCN coding.
Your kind and usual support is much appreciated

With thanks
Tristar ltd
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24-06-2018, 07:40 AM,
Post: #2
RE: W221 S320 CDi Glow plug relay module replacement
Normally you don't need to something , but change all glowplugs .
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