2008 GL320 CDI.
Check engine came on with P0670 and P0675 codes. It says Glow Plug on cylinder 5.

This is our first diesel, can you guys help out? Some pics would help.

Thanks.

 

Check internal resistance of the plugs. These also had a problem with glow plug modules. If the wiring and plugs check out, then a new module will be needed.
Sorry Im not sure how to add any pics

 

Mstrbenztech,

Thanks for your response. Please excuse my ignorance, I will check and verify the wiring but how do I check the internal resistance of the plugs? That's something I have never done before.
Also, is the module same as controller?

Thanks.