Common Issues Behind Mercedes Cruise Control Malfunctions

Have you ever engaged the cruise control of your Mercedes and realized that it does not engage or ceases to work? Cruise control is one of those tools that make the driving process more comfortable; it’s a system that keeps your Mercedes at a steady speed without stamping on the accelerator. It is a lifesaver for long distances as it prevents fatigue among drivers and increases fuel economy. But when this easygoing system does not work, a trip that was supposed to be very convenient and stress-free becomes rather irritating. Let’s see the common reasons why cruise control fails and how you can resolve these failures in this system.

Possible Reasons Why Cruise Control Systems Fail

• Faulty Brake Pedal Switch: In most cases, cruise control failure is caused by a faulty brake pedal switch. This switch commands the cruise control to turn off whenever you step on the brake pedal. If it is faulty, the system may assume that the brakes are on and not allow cruise control to do its work.
• Issues with Speed Sensors: Cruise control works with speed sensors to measure a car’s speed. If these sensors are dirty, damaged, or malfunctioning, they relay signals that are different from the actual to the control module, thereby causing the system to fail.
• Blown Fuses: The fuses safeguard the electrical parts of your cruise control system against high-voltage currents. Once a fuse blows, the whole system is affected. This is one of the easiest things to diagnose and correct.
• Throttle Actuator Problems: The cruise control system is one of the inputs that causes the throttle actuator to regulate the speed of the engine. If it is faulty or stuck, your Mercedes will not move at the expected speed as other cars on the road.
• Wiring or Electrical Issues: In most cases, problematic wiring or weak connections between the components hinder the cruise control system. Problems in this area are characterized by sporadic or complete power outages in the system.
• Control Module Malfunction: The cruise control module is the controller that receives all the system data and commands. A failure in this “brain” can cause the cruise control to produce an unpredictable or no response.

How To Troubleshoot Cruise Control Problems

• Check the Brake Pedal Switch: Check whether the brake lights are in the right condition. If these lights remain on when you are not applying the brake, it may be that the switch is stuck and requires replacement.
• Inspect the Fuses: Search for the fuse box (use the car’s manual to guide you) and look for blown fuses that concern the cruise control system. If there is anything wrong with the fuse, it will need to be replaced.
• Speed Sensor Care: Speed sensors are vulnerable to getting dirty and this causes them to fail at some point. Sometimes, merely cleaning or replacing them can solve the problem with the cruise control system.
• Test the Throttle Actuator: If your car fails to accelerate, then the throttle actuator is most likely the problem. This component usually requires a professional inspection to repair or even replace it.
• Check out Electrical Wiring: It is important to examine the wiring for any signs of damage or power problems, such as loose connections. The simple solution may be to rewire the affected part.
• Consult a Mercedes Specialist: If none of the above methods work, take your Mercedes to a professional mechanic.

Milestone Motors Will Help You Fix The Cruise Control Issues In Your Mercedes

Here at Milestone Motors, we primarily deal with diagnosing faults and implementing repairs of Mercedes cars. Our team knows how the Mercedes cruise control works and utilizes sophisticated equipment to diagnose problems correctly.

Whether it is a brake pedal switch that has developed a problem, a sensor that has gone bad, or a complex control module problem, we are here to assist. Established in Palm Beach, FL, we offer the best services to make your Mercedes run like the champion it is. You can also bring your car to us if you reside in the neighboring areas such as Wellington, West Palm Beach, and Royal Palm Beach.