Mercedes-Benz R350 ignition switch not recognizing key, preventing car from starting on Mercedes-Benz R350

Some Mercedes-Benz R350 owners report experiencing ignition switch issues that prevent the car from starting, which can be particularly frustrating and potentially leave them stranded. Common problems include a faulty ignition switch that may cause the vehicle not to turn over, leading to starting difficulties. Additionally, issues with the key fob, such as a low battery or a malfunctioning unit, can also hinder the car's ability to start, necessitating a replacement or reprogramming of the key fob. Some owners have encountered failures with the Electronic Ignition Switch (EIS) module, which can wear out and disrupt communication with the key. For those with the Keyless Go feature, a faulty module may prevent key recognition despite other systems functioning correctly. Furthermore, if the key does not turn in the ignition, it may be helpful to move the steering wheel, as the steering wheel lock can sometimes obstruct key movement. Lastly, a low battery in the key fob is another common issue that can lead to detection problems, which may be resolved by replacing or resetting the key fob battery. It is recommended for owners facing these issues to investigate these potential problems to ensure a prompt resolution and regain vehicle functionality.