Just finished testing resistance(?) of the glow plugs. They all have a range of 0.9 -1.1 ohms. Check for continuity also. They were good. Checked for voltage to the pins. They all have the same voltage. The strip fuse is also good. Just wondering if a weak battery can cause the GP lights to stay on. I had to jump start the car to bring it home. It wont start right now.

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'85 300D Cal 280,000 miles
'14 GLK 350 60000 miles