B1371 Mercury Code - Illuminated Entry Relay Circuit Failure
Quick Answer
The B1371 diagnostic trouble code (DTC) for Mercury vehicles refers to an Illuminated Entry Relay Circuit Failure. Common causes include Faulty illuminated entry relay, Wiring issues such as shorts or open circuits, Malfunctioning control module. 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
- B1371 Mercury indicates Illuminated Entry Relay Circuit Failure.
- Common causes
- Common causes include Faulty illuminated entry relay, Wiring issues such as shorts or open circuits, Malfunctioning control module.
- 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 B1371 Mercury Description
The B1371 diagnostic trouble code (DTC) for Mercury vehicles refers to an Illuminated Entry Relay Circuit Failure. This code indicates that there is an issue with the circuit responsible for controlling the illuminated entry feature in the vehicle. The illuminated entry system is designed to turn on interior lights when the doors are unlocked or opened, providing visibility and convenience for the driver and passengers.
Common Causes of B1371 Mercury
- Faulty illuminated entry relay.
- Wiring issues such as shorts or open circuits.
- Malfunctioning control module.
- Corrosion or poor connections in the circuit.
- Physical damage to the wiring harness.
Symptoms of B1371 Mercury
- Interior lights not turning on when doors are opened.
- Interior lights not turning off when doors are closed.
- Battery drain due to lights remaining on.
- Inconsistent behavior of the illuminated entry system.
How to Fix B1371 Mercury
- Begin by diagnosing the specific cause of the Illuminated Entry Relay Circuit Failure using a diagnostic scanner and multimeter.
- Inspect the wiring harness for any visible damage, corrosion, or loose connections. Repair or replace any damaged wiring.
- Test the illuminated entry relay and control module for proper function. Replace any components that are found to be faulty.
- Clear the DTC from the vehicle's computer using the diagnostic scanner.
- Test the system to ensure that the interior lights now function correctly when the doors are opened and closed.
Cost to Fix B1371 Mercury
The cost of repairing an Illuminated Entry Relay Circuit Failure can vary depending on the specific cause of the issue and the labor rates in your area. In general, you can expect to pay anywhere from $100 to $300 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can fluctuate, so it's advisable to contact local shops for a more accurate estimate based on your vehicle make and model.
Need more information about the B1371 Mercury code?
Need more information on how to fix the B1371 Mercury code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B1371 Mercury code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about B1371 Mercury Code
1. What does the OBDII code B1371 mean for a Mercury?
The B1371 code indicates an "Illuminated Entry Relay Circuit Failure," which means the relay circuit that controls the entry lighting system is malfunctioning.
2. What are the common symptoms of the B1371 code in a Mercury vehicle?
Symptoms include interior lights not turning on or staying on too long, entry lights flickering, or intermittent operation of the illuminated entry system.
3. What causes the B1371 code to appear?
Common causes include a faulty illuminated entry relay, damaged wiring or connectors in the circuit, or a malfunctioning body control module (BCM).
4. Can a blown fuse trigger the B1371 code?
Yes, a blown fuse in the illuminated entry system can interrupt the circuit and cause the B1371 code to appear.
5. How do you diagnose the B1371 code in a Mercury?
Diagnosis involves checking the relay, inspecting the wiring and connectors for damage or corrosion, testing the BCM, and verifying the fuse integrity.
6. Can I still drive my Mercury with the B1371 code active?
Yes, the code typically doesn’t affect vehicle drivability, but the illuminated entry system may not function properly.
7. How is the B1371 code fixed in a Mercury?
Repairs may include replacing the illuminated entry relay, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming/replacing the BCM if necessary.
8. Is the B1371 code related to the battery?
It can be indirectly related if a weak or faulty battery causes electrical system malfunctions, but the code itself pertains to the illuminated entry relay circuit.
9. How much does it cost to repair the B1371 code in a Mercury?
Repair costs can vary but typically range from $50 to $200, depending on whether the issue is with the relay, wiring, or BCM.
10. Can clearing the B1371 code with a scan tool fix the problem?
Clearing the code may temporarily reset the system, but the underlying issue must be addressed to prevent the code from returning.
Discuss the causes and fixes for B1371 Mercury OBDII Code
Code B1371 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.