mercedesbenz Workshop Repair Guides

Mercedes Benz Workshop Service and Repair Manuals

O2 Sensors, Location/Task/Design/Function|Page 3629 > < O2 Sensors, Location/Task/Design/Function|Page 3627
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The purpose of the O2 sensor heater is to rapidly heat up the O2 sensors to their operating temperature while preventing damage to the ceramic material
as a result of controlled heating power.

The sensor heater is actuated by the engine control unit through ground. The performance of the sensor heater at operating temperature amounts to:
18 w on Engine 104, 111, 119, 120 and 112, 113 with ME2.0

O2 Sensors, Location/Task/Design/Function|Page 3629 > < O2 Sensors, Location/Task/Design/Function|Page 3627