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Old 11-25-2012, 03:53 PM
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BioPOWER BioPOWER is offline
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Join Date: Nov 2006
Location: Princeton, NJ
Posts: 527
No glow plug light - '99 E300 - Car runs fine

Hey all,

Have been running with a CEL on for several months, code is P0380 (glow plug relay). That being said, the preglow system works great -- car starts promptly at temps as low as 10 F. All six GP's check good resistance and are receiving power, else I would definitely get misfires on startup.

My main concern is that the glow plug light never turns on. The lamp itself is fine. Can a fault with the instrument cluster (causing the lamp not to turn on) trigger the CEL?

99 E300 TD -- sold
01 540i 6 spd
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