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Home >> BMW >> 2009 >> 335d >> Repair and Diagnosis >> Engine Mechanical >> Fuel System >> Diesel Auxiliary Systems - Overview >> Diesel Auxiliary Systems >> Glow-plug System >> Concealed Heating
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Concealed Heating

Preheating and start standby heating are activated as so-called concealed heating up to a coolant temperature of 30°C.

Concealed heating is triggered a maximum of 4 times and is then not enabled again before the engine is restarted.

Concealed heating is triggered by the following signals: