W211 E220 CDI facelift glow plug relay location


Active Member
May 15, 2011
2011 S350 Bluetec, 2006 E220 CDI Estate 2008, Porsche Boxster S Sport Edition, 1991 Nissan Figaro
I cannot for the life of me find the Glow Plug Relay on my S211 E220 CDI (facelift). I have a fault on no 2 glow plug, which has been replaced (twice) but still no joy, so I'm wondering if the relay/fuse has gone.

Every search I do says its on the inner wing/NS/Passenger side near the washer bottle/black box about 10cm square, but it's just not there.

Anyone with WIS know where it is?

It looks like they may have moved it on this engine post-facelift. Following the wires from the glow plugs it looks like they head toward the Delphi ECU...which is located top right as you look into the engine bay standing in front of the car.

Am I just being dense?
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