AutoCodes – Lincoln – B1349 Lincoln

B1349 Lincoln Code - Heated Backlite Relay Short to Battery

Quick Answer

When the rear defrosts switch on the climate control assembly is pressed, a ground signal is sent to the Smart Junction Box (SJB) on the circuit. Common causes include Faulty Heated Rear Window Relay, Faulty Heated Rear Window Switch, Faulty Heated Rear Window Grid. 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: B1349 Lincoln indicates Heated Backlite Relay Short to Battery.
Common causes: Common causes include Faulty Heated Rear Window Relay, Faulty Heated Rear Window Switch, Faulty Heated Rear Window Grid.
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 772

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 15, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1349 Lincoln Description

When the rear defrosts switch on the climate control assembly is pressed, a ground signal is sent to the Smart Junction Box (SJB) on the circuit. The SJB then grounds circuit. This energizes the heated rear window relay, allowing voltage to be supplied to the heated rear window grid through the circuit. The OBDII code sets when the Heated Backlite Input is not to factory specifications.

OBDII Code B1349 Lincoln - Heated Backlite Relay Short to Battery - AutoCodes.com — B1349 Lincoln Code - Heated Backlite Relay Short to Battery

What does this mean?

What are the Possible Causes of the DTC B1349 Lincoln?

Faulty Heated Rear Window Relay
Faulty Heated Rear Window Switch
Faulty Heated Rear Window Grid
Faulty Smart Junction Box (SJB)

How to Fix the DTC B1349 Lincoln?

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 B1349 Lincoln 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.

Need more information about the B1349 Lincoln code?

Need more information on how to fix the B1349 Lincoln code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1349 Lincoln code diagnosed by a professional: Find a repair shop in your area

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 B1349 Lincoln Code

1. What are the common symptoms of OBDII code B1349 in a Lincoln related to the Heated Backlite Relay Short to Battery?

- Common symptoms include a non-functioning rear defroster, illuminated dashboard warning light, and possible issues with the heating system.

2. What can cause the Heated Backlite Relay to short to the battery in a Lincoln?

- The most common causes of this issue are damaged wiring, a faulty relay, or a problem with the backlite grid or connectors.

3. How can I diagnose the Heated Backlite Relay Short to Battery problem in my Lincoln?

- You can diagnose this issue by performing a visual inspection of the wiring and backlite components, checking the relay functionality, and using an OBDII scanner to retrieve the specific fault code.

4. Is it safe to continue driving my Lincoln with the B1349 code related to the Heated Backlite Relay Short to Battery?

- It is not recommended to drive your vehicle with this issue, as it can affect visibility and compromise the electrical system's integrity.

5. How can I repair the Heated Backlite Relay Short to Battery problem in my Lincoln?

- Repair options may include replacing damaged wiring, installing a new relay, repairing the backlite grid, or addressing any faulty connectors.

6. Can I reset the B1349 OBDII code related to the Heated Backlite Relay Short to Battery myself?

- While you can clear the code with an OBDII scanner, it is crucial to address the underlying issue causing the fault code to prevent it from reoccurring.

7. Will fixing the Heated Backlite Relay Short to Battery issue in my Lincoln be costly?

- The cost of repair can vary depending on the extent of the damage and the specific components that need to be replaced, but it is generally advisable to address the issue promptly to prevent further damage.

8. How long does it typically take to repair the Heated Backlite Relay Short to Battery problem in a Lincoln?

- The repair time can vary based on the complexity of the issue, but it may take anywhere from a few hours to a full day to complete the necessary repairs.

9. Are there any preventive measures I can take to avoid the Heated Backlite Relay Short to Battery issue in the future?

- Regularly inspecting the backlite system, addressing any wiring issues promptly, and ensuring proper maintenance of the heating system can help prevent this problem from occurring.

10. Can a professional mechanic help me diagnose and repair the B1349 code related to the Heated Backlite Relay Short to Battery in my Lincoln?

- Yes, seeking assistance from a qualified mechanic or automotive technician is recommended for accurate diagnosis and effective repair of this issue.