U0104 Mercury Code - Lost Communication Cruise Control Module
Quick Answer
The U0104 diagnostic trouble code (DTC) for Mercury vehicles indicates that there is a communication issue with the Cruise Control Module. Common causes include Faulty cruise control module, Damaged wiring or connectors, Software glitch in the vehicle's computer system. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- U0104 Mercury indicates Lost Communication Cruise Control Module.
- Common causes
- Common causes include Faulty cruise control module, Damaged wiring or connectors, Software glitch in the vehicle's computer system.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code U0104 Mercury Description
The U0104 diagnostic trouble code (DTC) for Mercury vehicles indicates that there is a communication issue with the Cruise Control Module. This means that the vehicle's onboard computer system is unable to establish a proper connection with the cruise control module, leading to a loss of communication. The cruise control module is responsible for maintaining the vehicle's speed automatically, allowing the driver to set a desired speed without having to constantly press the accelerator pedal.
Common Causes of U0104 Mercury
- Faulty cruise control module
- Damaged wiring or connectors
- Software glitch in the vehicle's computer system
- Malfunction in another related component affecting communication
- Corrosion or water damage in the cruise control module
Symptoms of U0104 Mercury
- Inoperative cruise control system
- Cruise control light flashing or staying on
- Vehicle speed fluctuations
- Check Engine Light illuminated
- Loss of other vehicle systems that rely on cruise control module data
How to Fix U0104 Mercury
- Begin by conducting a thorough inspection of the cruise control module, wiring, and connectors for any visible damage or corrosion.
- Use a diagnostic scanner to retrieve the specific trouble codes and data related to the communication loss with the cruise control module.
- Test the cruise control module's functionality and communication with the vehicle's computer system using specialized diagnostic tools.
- Replace the cruise control module if it is found to be faulty, ensuring that the new module is properly programmed and calibrated to the vehicle.
- Clear the DTCs from the vehicle's computer system and perform a test drive to verify that the cruise control system is functioning correctly.
Cost to Fix U0104 Mercury
The typical repair costs for addressing a U0104 code on a Mercury vehicle can range from $200 to $500, depending on the specific cause of the communication loss and the cost of parts and labor. This estimate includes the cost of diagnosing the issue, replacing the cruise control module if necessary, and any additional repairs or programming required. It is important to note that the actual cost may vary based on factors such as the location of the repair shop, the make and model of the vehicle, and the extent of the repairs needed. Additionally, labor rates at auto repair shops can vary widely, with hourly rates typically ranging from $80 to $150. It is recommended to obtain quotes from multiple repair shops to ensure a competitive price for the repair.
Need more information about the U0104 Mercury code?
Need more information on how to fix the U0104 Mercury code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the U0104 Mercury code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about U0104 Mercury Code
1. What are the common symptoms of OBDII code U0104 in a Mercury related to the Cruise Control Module?
The common symptoms include the cruise control system not working, the cruise control light staying illuminated, and potential issues with other vehicle functions related to the Cruise Control Module.
2. What are the possible causes of OBDII code U0104 in a Mercury indicating Lost Communication with the Cruise Control Module?
Possible causes include faulty wiring or connections, a malfunctioning Cruise Control Module, a damaged powertrain control module (PCM), or software issues.
3. How can I diagnose the OBDII code U0104 in my Mercury that points to a communication problem with the Cruise Control Module?
Diagnosis involves checking the wiring and connections related to the Cruise Control Module, testing the Cruise Control Module itself, scanning the vehicle for other trouble codes, and using a diagnostic tool to communicate with the affected module.
4. What are some repair tips for addressing OBDII code U0104 in a Mercury caused by lost communication with the Cruise Control Module?
Repair tips include inspecting and repairing any damaged wiring or connections, replacing the Cruise Control Module if necessary, reprogramming modules if software issues are detected, and clearing the trouble code after completing repairs.
5. Can OBDII code U0104 in a Mercury related to the Cruise Control Module cause any safety concerns?
While the code itself may not pose an immediate safety risk, the loss of functionality in the cruise control system could affect driver comfort and convenience, especially on long drives.
6. Is it safe to continue driving my Mercury with OBDII code U0104 related to the Cruise Control Module?
It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to restore cruise control functionality and ensure proper communication between the modules.
7. How much does it typically cost to repair OBDII code U0104 in a Mercury due to lost communication with the Cruise Control Module?
The cost of repair can vary depending on the specific cause of the issue, but it may involve expenses for diagnostic labor, replacement parts, and potential reprogramming of modules. Costs can range from a few hundred to over a thousand dollars.
8. Can a DIY enthusiast fix OBDII code U0104 in a Mercury related to the Cruise Control Module, or is professional assistance recommended?
While some basic troubleshooting steps can be performed by DIY enthusiasts, diagnosing and repairing communication issues with the Cruise Control Module may require specialized tools and expertise, making professional assistance advisable in many cases.
9. Will resetting the OBDII code U0104 in my Mercury resolve the issue with the Cruise Control Module communication?
Simply clearing the trouble code may not address the underlying communication problem with the Cruise Control Module. It is important to diagnose the root cause and perform necessary repairs to prevent the code from reoccurring.
10. Are there any recalls or technical service bulletins (TSBs) related to OBDII code U0104 in Mercury vehicles experiencing lost communication with the Cruise Control Module?
Owners of affected Mercury vehicles should check with their local dealership or the manufacturer to inquire about any recalls or TSBs related to OBDII code U0104 and the Cruise Control Module communication issue.
Discuss the causes and fixes for U0104 Mercury OBDII Code
Code U0104 Mercury comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.