CLK 55 AMG (208.374) V8-5.5L (113.984) (2001)
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temperature upstream of TWC is limited to approx. 350 °C in the condensation phase after cold start. After this, the temperature is controlled to approx.
700 °C. An exhaust temperature is determined from various engine operating data for this purpose and the sensor heated accordingly.
Different values apply to the O2 sensor heaters downstream of TWC.