glow plug light will not come on and suv will not turn over
Thread Starter
Newbie
Joined: Apr 2025
Posts: 4
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From: Edmonton Alberta Canada
2007 Mercedes Benz gl 320 cdi
glow plug light will not come on and suv will not turn over
Hi I have a 2007 Mercedes-Benz GL 320 cdi and all of a sudden the suv has stopped working .The suv will not start and there is no glow plug symbol when the key is inserted to have the glow plugs heat it up .I have put in a new battery, but no change ? What is broken?
Senior Member
Joined: Aug 2018
Posts: 411
Likes: 122
From: Kelowna, BC
08 GL320 CDI
Could be the Glow Plug module in the engine bay. I had to replace mine about 6 years ago, its at the front left of the engine, black box with a big red wire going to it. Just got a replacement off Amazon, still working to this day. Took about 15 mins to change it and the part was only a couple hundred.
Last edited by Sallad; Dec 26, 2025 at 03:50 PM.
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