BMW E65 glow plugs and glow relay
730d
E65 730d: how long does glowing last when cold?
Glowing starts when the coolant temperature is below 25 °C. At that point it lasts 0.5 seconds. The time grows as the temperature drops and is longest, 2.7 seconds, at -25 °C.
E65 730d: the glow plugs do not work - what is the glow relay and where is it?
The glow plug control relay is designated A2402. It can be replaced without removing the intake manifold. Check the relay's location in the E65's own manual, because the location diagram for the E38 does not necessarily apply.
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