AutoCodes – Mercury – B2964 Mercury

B2964 Mercury Code - Passenger Seat Heater Feedback Circuit Failure

Quick Answer

Upon receiving a signal from the Heating, Ventilation, and Air Conditioning (HVAC) Module, the Heated Seat Module will decrease one setting (the sequence is high, low, off, high, etc.). Common causes include Faulty Heated Seat Module, Heated Seat Module harness is open or shorted, Heated Seat 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: B2964 Mercury indicates Passenger Seat Heater Feedback Circuit Failure.
Common causes: Common causes include Faulty Heated Seat Module, Heated Seat Module harness is open or shorted, Heated Seat 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 449

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 Feb 20, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2964 Mercury Description

Upon receiving a signal from the Heating, Ventilation, and Air Conditioning (HVAC) Module, the Heated Seat Module will decrease one setting (the sequence is high, low, off, high, etc.). Circuits between the heated seat module and HVAC module supply the control signals for the indicators to operate. When a heated seat is set to high, both LED indicators above the heated seat control button will illuminate. When a heated seat is set to low, only the left LED indicator will illuminate. When a heated seat is set to off, neither LED will be illuminated. If a short to voltage condition is present on both heated seat indicator status circuits at the same time, the Diagnostic Trouble Code (DTC) will set.

OBDII Code B2964 Mercury - Passenger Seat Heater Feedback Circuit Failure - AutoCodes.com — B2964 Mercury Code - Passenger Seat Heater Feedback Circuit Failure

What does this mean?

What are the Possible Causes of the DTC B2964 Mercury?

Faulty Heated Seat Module
Heated Seat Module harness is open or shorted
Heated Seat Module circuit poor electrical connection
Faulty Heating, Ventilation, and Air Conditioning (HVAC) Module

How to Fix the DTC B2964 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 B2964 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 B2964 Mercury Code

1. What does the OBDII code B2964 on a Mercury mean?

The code B2964 indicates a failure in the passenger seat heater feedback circuit, which monitors the functionality of the seat heater system.

2. What are the common symptoms of code B2964?

Symptoms may include the passenger seat heater not working, intermittent heating, or the seat heater indicator light malfunctioning.

3. What causes the B2964 code to appear?

This code is typically caused by a faulty seat heater element, damaged wiring, a malfunctioning feedback sensor, or a problem with the seat heater control module.

4. Can I still use my vehicle if the B2964 code is present?

Yes, the vehicle is still drivable, but the passenger seat heater may not function properly until the issue is resolved.

5. How do I diagnose the B2964 code?

Start by inspecting the seat heater wiring and connectors for damage. Use a multimeter to test the continuity of the seat heater element and check for proper voltage at the control module.

6. How can I fix the B2964 code?

Repairs may include replacing the seat heater element, repairing or replacing damaged wiring, or replacing the seat heater control module if it is faulty.

7. Is the B2964 code specific to Mercury vehicles?

While B2964 is common in Mercury vehicles, it can also occur in other makes and models that use similar seat heater systems.

8. How much does it cost to repair the B2964 code?

Repair costs vary depending on the specific issue but typically range from $100 to $500, depending on whether the heater element, wiring, or control module needs replacement.

9. Can a faulty fuse cause the B2964 code?

A blown fuse could cause the seat heater system to stop working, but it is not the direct cause of the B2964 code. The code specifically relates to a feedback circuit issue.

10. Do I need professional help to fix the B2964 code?

If youâ€™re experienced with automotive electrical systems, you may be able to diagnose and repair the issue yourself. However, professional assistance is recommended for complex electrical repairs.