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What issues were reported with the 2009 Mercedes R320 BlueTEC model?
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The 2009 Mercedes-Benz R320 with the BlueTEC engine has experienced various issues. Problems such as a defective temperature sensor, swirl flap motor, or EGR valve can lead to engine performance issues and hinder the proper regeneration of the DPF filter. The DPF, which catches soot, requires occasional cleaning. To burn off the soot, the computer elevates the engine's exhaust fumes. Another common problem is the AdBlue tank freezing due to the heater in the tank failing. Repairing this can be expensive, costing between $2,000 and over $3,000 if done at a dealership or repair shop. However, you can save money by replacing it yourself for under $1,200.
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In 2009, issues with the Mercedes R320 Bluetec often stem from problems with the diesel particulate filter (DPF), resulting in higher emissions levels.
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