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Mercedes AdBlue Problems

AdBlue is just another name for Diesel Exhaust Fluid or DEF. This solution of urea in water is injected into exhaust gases as a part of the exhaust treatment system called selective catalytic reduction or SCR. This process converts up to 90% of the vehicle’s harmful nitrogen oxides into nitrogen …

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Mercedes Start/Stop Not Working

mercedes stop start not working

There may come a day when the Start/Stop function on your Mercedes-Benz no longer works. This article reviews possible causes that can prevent you from starting the engine with the Start/Stop button. In case of an emergency To get your Mercedes started manually, grab the Start/Stop button and pull it out. …

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Mercedes Auto Lamp Function Inoperative

You get into the car and start your Mercedes-Benz. Next, you are greeted with an “Auto Lamp Function Inoperative” error message on the dashboard. This problem is most often caused due to Mercedes-Benz light sensor malfunction. What does this mean? If you are getting Auto Lamp Function Inoperative  error, it means …

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Car Alarm Horn Goes Off Randomly

Is your car alarm going off for no reason? This article reviews the common issues that can cause a car alarm to go off randomly. Mercedes’s alarm may go off even when no one tries to steal the car. We have seen many cases when a Mercedes alarm (siren) goes …

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Mercedes Radar Sensor Problems & Solutions

Mercedes-Benz radar system may malfunction and set errors in various Mercedes modules, including Parktronic System, Collision Prevention Assist Plus and Distronic Plus, autonomous driving, Active Brake Assist Cross Traffic, etc. The cameras and sensors could be defective, but often such problems are because sensors are covered with dirt, ice, or …

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Troubleshooting Mercedes Problems with YOUCANIC Scanner


Owning a modern vehicle and not knowing how to use a diagnostic scanner is like having a smartphone (which you use to make phone calls) and not knowing that there are an Apps / Play store with tons of apps. A diagnostic scanner is necessary if you own a 2000 and newer …

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Mysterious Mercedes Electrical Problems

corroded wire electrical issue

Recently, we have been working on a Mercedes-Benz with some major and unexplainable electrical issues. The problem started with the Keyless Go feature. The key would unlock the car via the key fob and start by inserting it in the ignition. But Keyless Go stopped working. Push Start or unlock …

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Mercedes Codes P0170 P0173

p0170 p0173

Mercedes-Benz owners may notice the check engine light plus P0170 and P0173 codes.  Theoretically, these two codes mean the fuel mixture is too rich or too lean. Most of the time, these Mercedes-Benz fault codes are caused by a defective . You can try cleaning the sensor, but that doesn’t …

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Mercedes EZS EIS Ignition Switch Problem, Cause, Solution

mercedes benz cla interior to start

A problem that Mercedes-Benz owners may face is the key no longer turns in the ignition. This issue is often caused by a defective key, a bad shifter module, a failed Electronic Ignition Switch (EIS), the EIS-EZS, or a bad steering lock module (ESL). This problem can affect various Mercedes-Benz …

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