* Faulty Vehicle Speed Sensor: The vehicle speed sensor (VSS) is responsible for providing information about the vehicle's speed to the speedometer, as well as the cruise control system. A faulty VSS can cause the speedometer to stop working and the cruise control to disengage.
* Damaged Wiring: Damage to the wiring that connects the VSS to the speedometer and cruise control system can also cause these components to stop working. This damage could be caused by a variety of factors, such as rodent damage, a loose electrical connection, or corrosion.
* Faulty Speedometer or Cruise Control Module: The speedometer and cruise control module are responsible for receiving the signal from the VSS and converting it into a visible reading on the speedometer and controlling the cruise control system, respectively. A fault in either of these modules could also cause the speedometer and cruise control to stop working.
In addition to the VSS, wiring, or speedometer/cruise control module, the ABS brake light may stay on due to a fault with the ABS system itself. Some possible causes of an ABS light illumination include:
* Low brake fluid: If the brake fluid level is too low, the ABS system may not be able to function properly, causing the ABS light to illuminate.
* Faulty wheel speed sensor: The wheel speed sensors monitor the speed of each wheel and send this information to the ABS control module. If one or more of these sensors is faulty, the ABS light may illuminate.
* Faulty ABS control module: The ABS control module is responsible for processing the signals from the wheel speed sensors and controlling the ABS system. A fault in this module can cause the ABS light to illuminate.
It's important to have the cause of these issues diagnosed and repaired by a qualified mechanic to ensure the proper functioning of your vehicle's speedometer, cruise control, and ABS system.
