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Home >> Mercedes Benz >> 2025 >> GLA250 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 13 (Climate Control System -- 118 Chassis) >> Safety Precautions >> Risk Of Explosion Caused By Fuel Vapors Igniting, Risk Of Poisoning Caused By Inhaling Combustible Gases And Risk Of Injury Caused By Burns During And After Operation Of Heater Unit - AS83.70-Z-0002-01A

Risk Of Explosion Caused By Fuel Vapors Igniting, Risk Of Poisoning Caused By Inhaling Combustible Gases And Risk Of Injury Caused By Burns During And After Operation Of Heater Unit - AS83.70-Z-0002-01A

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Model All (4xWD, CAR, Heavy transporter, Light transporter) 

Do not operate stationary heater, auxiliary heater or engine with heater booster in closed rooms or when refueling. Allow heater to cool down after operation and wear protective gloves. 

with heater booster, auxiliary heater or stationary heater 

Potential risks 

Risk of explosion 

caused by heating while fueling.

Risk of poisoning 

The gases generated during the combustion in the heater present a health hazard and can trigger symptoms of poisoning that could lead to unconsciousness if the heater is operated in closed rooms, e.g. workshops or garages.

Risk of burn injuries 

There is an increased risk of burn injuries at the heater housing and exhaust gas outlet during or following operation of the heater.

Safety instructions/precautions