1998 Toyota Land Cruiser Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 1998 Toyota Land Cruiser 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 1998 Toyota Land Cruiser 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 1998 Toyota Land Cruiser 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.

When the throttle position sensor fails, the engine's computer tends to overcompensate with fuel, leading black exhaust coming from the tailpipe. There is a strong possibility of engine misfires, and the check engine light will come on.

Throttle position sensors can also develop "dead spots," or certain places along the throttle curve where it doesn't get a reading. When this happens, the above symptoms can occur but then stop when you further press or let off the gas pedal.

When the vehicle speed sensor fails or the wiring harness prevents signal transmission, the speedometer is the first thing that will stop functioning properly. This can be an intermittent issue where the speedometer only works occasionally, the speedometer may cease all function, or the speedometer may read erratically or incorrectly. Also, the traction control and anti lock brake warning lights specific to each vehicle may be illuminated, depending on the design of those systems. You may notice the vehicle hesitate to accelerate, cruise control will not function properly, and the vehicle may not shift properly through all of the gears.

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.

The cruise control switch can cause complete failure of the cruise control feature, but in a lucky scenario only partial functionality will be lost. This means that the cruise control may come on, but that it will not increase in speed automatically, or the cancel button does not work leading the driver to cancel cruise control with the foot brake. In some vehicles, the cruise control light may illuminate, or a warning message may be displayed due to lack of functionality.

What are the initial diagnostic steps to troubleshoot the non-functioning cruise control in a 1998 Toyota Land Cruiser?

When troubleshooting the non-functioning cruise control in a 1998 Toyota Land Cruiser, it's essential to adopt a systematic diagnostic approach. Start by checking the cruise control fuse, as a blown fuse can easily disrupt the system's operation. Next, inspect the cruise control switch located on the steering wheel; ensure it is intact and functioning properly, as any damage here can prevent activation. It's also crucial to verify that the brake lights are operational, since a malfunctioning brake light switch can inadvertently disable the cruise control. Following this, examine the vehicle speed sensor, which is vital for the cruise control to maintain speed; any issues with this sensor can lead to system failure. Finally, utilize a diagnostic scanner to check for any stored error codes in the vehicle's onboard diagnostic system, as these codes can provide specific insights into what might be wrong with the cruise control system. By methodically following these steps, you can effectively narrow down the potential causes of the issue and work towards a solution.

What are the common problems that could cause the cruise control to stop working in a 1998 Toyota Land Cruiser?

When dealing with cruise control issues in a 1998 Toyota Land Cruiser, it's essential to understand the common problems that may be at play. One of the first areas to check is the cruise control switch, as a malfunction here can prevent the system from engaging or disengaging properly. Additionally, a blown fuse can disrupt the electrical flow necessary for the cruise control to function, so inspecting the fuses is a crucial step. Another potential culprit is vacuum leaks within the cruise control system, which can hinder its operation. The speed sensor also plays a vital role; if it's defective, it may provide inaccurate speed readings, leading to cruise control malfunctions. Furthermore, the brake light switch should be examined, as a faulty switch can prevent the cruise control from engaging when the brake pedal is pressed. Lastly, issues with the throttle cable, such as fraying or stretching, can affect the system's ability to maintain speed. By systematically checking these components, DIYers can effectively troubleshoot and potentially resolve cruise control problems in their Land Cruiser.

How urgent is it to address the malfunctioning cruise control in a 1998 Toyota Land Cruiser?

When it comes to a malfunctioning cruise control system in a 1998 Toyota Land Cruiser, the urgency of addressing the issue cannot be overstated. A malfunctioning system can lead to unpredictable vehicle behavior, such as sudden acceleration or deceleration, which poses a significant safety risk to both the driver and others on the road. Ignoring these symptoms may not only increase the likelihood of an accident but can also result in more extensive damage to the vehicle's components, leading to costly repairs down the line. Therefore, it is crucial to have the cruise control system inspected and repaired by a qualified mechanic as soon as possible. Taking prompt action not only ensures the safety of your driving experience but also helps maintain the overall performance and reliability of your Land Cruiser.

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