KBA points out inadmissibility at Mercedes-Benz

/ emissions scandal / shutdown device, Daimler, KBA, Mercedes Benz, recall, software update

The Federal Motor Transport Authority (KBA) was asked by the Higher Regional Court (OLG) of Munich to provide information by order of 3 August 2021. The subject matter of the dispute was a Mercedes-Benz GLK 220 CDI 4MATIC diesel with 125 kW and Euro 5-emission standard. According to the KBA, the vehicle has a impermissible shutdown device regarding emissions behaviour. As early as 21 June 2019, the authority issued a Recall notice for vehicles of this model.

Coolant target temperature is not permitted

The reason for the recall of some Mercedes-Benz GLK vehicles is that the pollutant and exhaust gas strategy was classified as inadmissible due to a “regulated coolant thermostat” during engine warm-up.

With coolant target temperature control, a software function activates a special temperature control that artificially keeps the coolant circuit cooler and delays the warming up of the engine oil. Only in this way can nitrogen oxide levels on the test bench remain below the legally prescribed limits. However, in real-world driving conditions, this function is deactivated, and the legal limit of 180 mg/km is significantly exceeded. The software function was discovered during emissions measurements on a Mercedes GLK 220 CDI with the OM 651 diesel engine and Euro 5 standard.

The Federal Court of Justice (BGH) has also multiple positive for consumers. Only recently, the Federal Court of Justice (BGH) ruled again in a case we were conducting that the judgment of the Higher Regional Court (OLG) of Koblenz had to be overturned and referred back to the Court of Appeal for a new decision (Federal Court of Justice decision of 20 April 2022, Ref. VII ZR 720/21). This case also concerned a used Mercedes-Benz GLK 220 CDI BE 4M (emission class Euro 5). The vehicle is equipped with a Diesel engine type OM 651 equipped.

Rogert & Ulbrich recommends Mercedes-Benz drivers

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