The glow indicator on the cluster only comes on for a 1/4 sec or so from a cold start and i do not hear the relay clicking off if I leave the key in the "on" position. I thought that was not right so I hooked a test light across a glow plug and sure enough, they are getting power while key is in the "on" position until the engine starts. If I leave the key in the on position to listen to the radio for example, the glow plugs will evevtually burn out being powered constantly.

This is not how a glow plug relay is suppose to work I suppose? I will try to repair it but if I do not have any luck, does anyone have a good used one for a 240D?

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85 300D turbo pristine w 157k when purchased 167,870 July 2025
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked