Mercedes Benz ML Glow Plug Relay Problems

Problems mentioning the Glow Plug Relay on the Mercedes Benz ML
Fails to start after sitting idle all night
2009 ML300cdi
Posted: Feb 20, 2023
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What problems can be caused by a faulty Glow Plug Relay?

Engine doesn't start up and/or cuts out when running

The engine doesn't start up very easily and will often not start at all. When it is running it can cut out completely without warning.