Land Rover LR3 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your Land Rover LR3 and How to Fix Them

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Reviewed by
Devin Cabugcal
Written by RepairPal Car Genius
Updated January 14, 2025
0%
30% chance it's the
Sensor
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25% chance it's the
Control Module
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25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a Land Rover LR3 cruise control isn't working are failed control module, sensor or switch issues, or throttle actuation problems.
  • Sensor: A faulty or malfunctioning sensor can lead to incorrect readings, causing issues with engine performance or other systems relying on accurate data.
  • Control Module: A faulty control module can lead to erratic vehicle behavior or failure of various electronic systems due to improper signal processing.
  • Throttle: A faulty throttle body or a defective accelerator pedal position sensor may be causing inconsistent throttle response.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a Land Rover LR3 cruise control isn't working?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

In the event that a wheel speed sensor fails, the ABS, traction control system (TCS) and manufacturer specific stability control system lights will illuminate, informing the driver that the systems are disabled. The vehicle will be more prone to tire slip, and normal driving patterns may need to be adjusted to correct for the loss of computer control. On older vehicle's, the speedometer can be affected, causing illumination of the check engine light as well.

Troubleshooting Cruise Control Issues in a Land Rover LR3

When troubleshooting cruise control issues in your Land Rover LR3, begin by checking the most accessible components. Start with the fuses related to the cruise control system; a blown fuse can easily disrupt functionality. Next, inspect the vacuum lines for any signs of wear or damage, as perished lines can lead to erratic speed control. If these elements are intact, examine the control module, sensors, and switches for faults. Faulty switches can not only affect cruise control but may also trigger unrelated warnings like HDC or height change issues. By systematically addressing these components, you can effectively diagnose and resolve cruise control problems, ensuring a smoother driving experience.

What Are the Common Causes of Cruise Control Malfunction in a Land Rover LR3?

When experiencing cruise control issues in a Land Rover LR3, it's essential to understand the common problems that may be at play. A failed control module, sensor, or switch can disrupt the system's functionality, making it crucial to inspect these components first. Additionally, throttle actuation problems can hinder the cruise control's performance, so checking the throttle system is advisable. A malfunctioning throttle position sensor can lead to overcompensation by the engine's computer, which may manifest as black exhaust, indicating a need for further investigation. In some instances, a simple software update can resolve issues like "Cruise control not permitted," which has been a warranty concern for some users. Furthermore, a defective switch or issues with vacuum hoses connected to the cruise control system can also contribute to malfunctions. By systematically examining these areas, DIYers can effectively diagnose and address cruise control problems in their Land Rover LR3, ensuring a smoother driving experience.

Why is the Cruise Control Not Working in a Land Rover LR3?

When the cruise control in your Land Rover LR3 is not functioning, it’s crucial to address the issue promptly to avoid potential safety risks and further damage to your vehicle. Common culprits include a failed control module, faulty sensors, or malfunctioning switches, which can disrupt the system's operation. Additionally, throttle actuation problems may prevent the cruise control from engaging properly. If you experience intermittent functionality, it could indicate underlying electrical issues or defective components that require immediate attention. A simple yet often overlooked factor is the condition of your brake lights; if they are malfunctioning, they can inadvertently disable the cruise control system. Furthermore, inspect the vacuum hoses connected to the cruise control system, as damaged or faulty lines can hinder performance. The vacuum dump valve is another critical component; if it fails, it can lead to significant cruise control issues. By addressing these factors quickly, you can ensure your vehicle remains safe and reliable on the road.

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Land Rover LR3 Cruise Control Issues & Repair Costs