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  • P0420 Causes and Common Fixes

    Code P0420 means Catalyst system efficiency below threshold (bank 1 or 2). 

    P0420 code means your catalytic converter is not operating at maximum efficiency, either because the catalytic converter needs to be replaced or there is a problem with one of the oxygen sensors. 
  • Mercedes-Benz Window Won't Go Up

    The most common problem why a Mercedes-Benz window won't go up is due to electrical issues caused by the door control module or faulty window regulator/motor.  

    In addition, when a Mercedes-Benz power window switch fails the windows will not rise.
  • Put Mercedes-Benz Transmission in Neutral

    Are you looking to put a Mercedes-Benz transmission in neutral so that you can push the vehicle around the garage? If your Mercedes-Benz is 2005 and you do not have a key, you will not be able to put the vehicle in neutral.
  • Mercedes-Benz Transmission Not in Park Risk of Vehicle Rolling Away

    A Mercedes-Benz vehicle displays Transmission Not in Park Risk of Vehicle Rolling Away when the driver's door is not fully closed.

    Open the driver's door and close it again to clear transmission, not in parking warning message on a Mercedes-Benz.  
  • Mercedes-Benz Transmission Malfunction Stop

    Mercedes-Benz vehicles such as GLA or CLA models will display Transmission Malfunction Stop when the Engine Control Unit (ECU) detects a problem that could potentially damage the transmission. 
  • Mercedes-Benz Parking Brake Inoperative See Owner's Manual Warning

    Faulty handbrake module or Parking Brake mechanism may fail triggering Mercedes-Benz Parking Brake Inoperative  See Owner's Manual Warning on the dashboard. 
  • Mercedes-Benz Parking Guidance Currently Unavailable

    The most common problems that trigger Parking Guidance Currently Unavailable See Oper Manual on a Mercedes-Benz are dirt on the front or rear bumper parking sensors or weak main battery. 
  • Mercedes-Benz Air Suspension Compressor Replacement

    Step-by-step procedure on how to replace the air suspension compressor of the Mercedes Benz R-Class R-Class, ML-Class, GL-Class
  • Mercedes-Benz Alternator Replacement | V6 & V8 Gasoline Engine

    This guide provides instructions on how to change the alternator on a Mercedes Benz M272 engine. This procedure also applies to the V8 M273 engine as well, which uses a very similar alternator.
  • Mercedes Benz Door Trim Removal Procedure

    This guide will show you how to fix the trims on any car, including a Mercedes Benz. 
  • Test Mercedes-Benz Alternator

    This guide provides instructions on how to test the alternator on a Mercedes Benz.

    Testing the alternator on a Mercedes Benz is relatively easy; it only takes half an hour, even for a beginner.
  • Mercedes-Benz Hood Open Warning

    This guide provides instructions on how to troubleshoot a Mercedes-Benz that displays hood open warning even when the hood is closed. ​​​​​​

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