mercedesbenz Workshop Repair Guides

Mercedes Benz Workshop Service and Repair Manuals

Auxiliary Water Pump > < Auxiliary Cabin Heater Intake Fan|Service and Repair
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Do not operate stationary heater, auxiliary heater or engine with heater booster in closed areas or when refueling. Allow heater unit to cool
down after operation and wear protective gloves.

16.2 Start up stationary heater

NOTE:  Refer to Star diagnosis.

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If the STH heater unit (A6) switches off automatically before reaching its operating temperature and cannot be restarted again a malfunction
lockout is present: To clear malfunction interlock, refer to Star Diagnosis.

Auxiliary Water Pump > < Auxiliary Cabin Heater Intake Fan|Service and Repair