A similar thing happened with my 300SD a little while back.

Seems my glow plug indicator bulb was burned out so I was unaware that I was driving around with a stuck glow plug relay!

This will drain your battery pretty quick. I had replaced my alternator before I figured out what the real problem was.

__________________
Joe

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1980 300SD - 495k miles - 'The Ambassador'
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Former Family Members
95 C280
73 280SEL
90 300D
87 300SDL (X2)
86 560SEL
84 300D
80 300SD