AutoCodes – Mercury – U0137 Mercury

U0137 Mercury Code - Lost Communication With Trailer Brake Control Module

Quick Answer

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Common causes include Faulty railer Brake Control (TBC) Module, Trailer Brake Control Module harness is open or shorted, Trailer Brake Control Module circuit poor electrical connection. 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: U0137 Mercury indicates Lost Communication With Trailer Brake Control Module.
Common causes: Common causes include Faulty railer Brake Control (TBC) Module, Trailer Brake Control Module harness is open or shorted, Trailer Brake Control Module circuit poor electrical connection.
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.

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Code Popularity 437

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 31, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0137 Mercury Description

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Operating information and commands are exchanged among the devices. The devices have programmed information about what messages are needed to be exchanged on the serial data circuits. CAN bus uses two dedicated wires for communication. The wires are called CAN high and CAN low. When the CAN bus is in idle mode, both lines carry 2.5V. When data bits are being transmitted, the CAN high line goes to 3.75V, and the CAN low drops to 1.25V, thereby generating a 2.5V differential between the lines. Since communication relies on a voltage differential between the two bus lines, the CAN bus is NOT sensitive to inductive spikes, electrical fields, or other noise. The Diagnostic Trouble Code (DTC) sets when a periodic message from the railer Brake Control (TBC) Module has not been received.

OBDII Code U0137 Mercury - Lost Communication With Trailer Brake Control Module - AutoCodes.com — U0137 Mercury Code - Lost Communication With Trailer Brake Control Module

What does this mean?

What are the Possible Causes of the DTC U0137 Mercury?

Faulty railer Brake Control (TBC) Module
Trailer Brake Control Module harness is open or shorted
Trailer Brake Control Module circuit poor electrical connection

How to Fix the DTC U0137 Mercury?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U0137 Mercury code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about U0137 Mercury Code

1. What are common symptoms of the U0137 OBDII code related to the Trailer Brake Control Module?

- Common symptoms include a malfunction indicator light (MIL) illuminated on the dashboard, loss of communication with the trailer brake control module, and potential issues with trailer brake functionality.

2. What are some possible causes of the U0137 OBDII code in a Mercury vehicle?

- Possible causes of the U0137 code include a faulty trailer brake control module, damaged wiring or connectors, a software glitch, or a communication network issue within the vehicle.

3. How can I diagnose the U0137 code in my Mercury for a lost communication with the trailer brake control module?

- Diagnosis typically involves using an OBDII scanner to retrieve the specific code, checking for any related codes or issues, inspecting the trailer brake control module and its connections, and testing the communication network for faults.

4. Can I still drive my Mercury with the U0137 code present?

- It is generally not recommended to drive with the U0137 code present, as it may indicate a potential safety issue with the trailer brake system. It is best to have the issue diagnosed and repaired as soon as possible.

5. How can I repair the U0137 code related to a lost communication with the trailer brake control module?

- Repair methods may include replacing the trailer brake control module, repairing or replacing damaged wiring or connectors, updating software if necessary, and ensuring proper communication network functionality.

6. Is it possible to reset the U0137 code in a Mercury without repairing the issue?

- While clearing the code with an OBDII scanner may temporarily turn off the MIL, the underlying issue causing the U0137 code will likely persist. It is important to address the root cause of the problem to prevent future occurrences.

7. Can a DIY enthusiast fix the U0137 code issue on a Mercury, or is professional help recommended?

- Depending on the individual's level of expertise and access to tools, some DIY enthusiasts may be able to diagnose and repair the U0137 code. However, due to the complexity of electronic systems, professional help is often recommended for accurate diagnosis and repair.

8. How much does it typically cost to repair the U0137 code in a Mercury at a dealership or auto repair shop?

- Repair costs for the U0137 code can vary depending on the specific cause of the issue, parts needed for replacement, and labor rates. It is advisable to obtain estimates from different sources to compare prices before proceeding with the repair.

9. Are there any preventive maintenance steps I can take to avoid encountering the U0137 code in my Mercury?

- Regularly inspecting and maintaining the trailer brake control module, ensuring proper wiring connections, and keeping the vehicle's communication network in good condition can help prevent issues that may trigger the U0137 code.

10. Will fixing the U0137 code related to the trailer brake control module affect the safety of towing a trailer with my Mercury?

- Addressing the U0137 code promptly and ensuring the trailer brake system functions properly is crucial for safe towing. Once the issue is repaired, it is recommended to test the trailer brake functionality to ensure safe towing practices.