2003 Jaguar XJ8 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2003 Jaguar XJ8 and How to Fix Them

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Reviewed by
Bo Fader
Written by RepairPal Car Genius
Updated January 14, 2025
0%
30% chance it's the
Sensor
0%
25% chance it's the
Control Module
0%
25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 2003 Jaguar XJ8 cruise control isn't working are failed control module, sensor or switch issues, or throttle actuation problems.
  • Sensor: A faulty sensor can lead to incorrect readings, causing issues with engine performance or triggering warning lights on the dashboard.
  • Control Module: A faulty control module can result in 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 acceleration and poor engine 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 2003 Jaguar XJ8 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.

How urgent is it to repair the non-functioning cruise control in a 2003 Jaguar XJ8?

While the non-functioning cruise control in a 2003 Jaguar XJ8 may not pose an immediate safety risk, it is still essential to recognize the implications of delaying repairs. Cruise control enhances the driving experience, particularly on long journeys, by allowing drivers to maintain a steady speed without constant foot pressure on the accelerator. Neglecting this issue can lead to increased fatigue during extended trips, as drivers must manually manage their speed, which can be both tiring and less efficient. Furthermore, without cruise control, fuel consumption may rise, as maintaining a consistent speed manually is often less economical. Although the repair is not urgent, addressing it promptly can significantly improve comfort and efficiency, ensuring that both the driver and passengers enjoy a more pleasant ride. Therefore, while it may not be critical, timely attention to the cruise control system is advisable to enhance overall driving satisfaction.

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2003 Jaguar XJ8 Cruise Control Issues & Repair Guide