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S420

Hi Jesse. Thanks for contacting us today. In most cases, a faulty gas cap or one that is not screwed on tight will cause the gas light and check engine light to illuminate. it's also possible that one of the...

There are a few different reasons why your heater could be blowing cold air. First, there may be a problem with your Heater controls. Inside your dashboard there are a series of doors that direct airflow. If one of these...

Hi there, thanks for writing in about your 1997 Mercedes-Benz S420. The fuel light circuit receives information from the fuel level sending unit (https://www.yourmechanic.com/services/fuel-gauge-sender-replacement) to show the approximate fuel level and give a warning as the level becomes low. There...