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CLK500

Hello. The first thing that I would suggest is that you return the mass airflow sensor and get a new one. The mass airflow sensor (https://www.yourmechanic.com/services/mass-airflow-sensor-replacement) you installed could be defective causing the same issue you were having previously. Make...

Hi there. Check the battery cables to see if they are loose and if there is any corrosion. Check the condition of wires to the starter to ensure that they are tight and there is no corrosion. If the battery...

Hello. There could be a problem with the alternator (https://www.yourmechanic.com/services/alternator-replacement) not charging properly, causing low battery voltage. This could cause electrical components to come on and off when they shouldn’t. The alternator could be making the humming noise you hear...