AutoCodes – Lincoln – B2659 Lincoln

B2659 Lincoln Code - Courtesy Switch Fault

Quick Answer

For vehicles equipped with Keyless Entry System (RKE), the vehicle security module sends an interior lamps ON request to the Instrument Cluster Module (ICM) through UART Based Protocol (UBP) whenever a door has been opened, the unlock button has been pressed on the remote transmitter, or when an unlock request has been entered with the keyless keypad (if equipped). Common causes include Blown Courtesy Lamp Bulb, Faulty Door Ajar Switch, Faulty Interior Lamp Switch. 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: B2659 Lincoln indicates Courtesy Switch Fault.
Common causes: Common causes include Blown Courtesy Lamp Bulb, Faulty Door Ajar Switch, Faulty Interior Lamp Switch.
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 498

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 Jan 13, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2659 Lincoln Description

For vehicles equipped with Keyless Entry System (RKE), the vehicle security module sends an interior lamps ON request to the Instrument Cluster Module (ICM) through UART Based Protocol (UBP) whenever a door has been opened, the unlock button has been pressed on the remote transmitter, or when an unlock request has been entered with the keyless keypad (if equipped). The interior lamps can also be turned ON or OFF with the interior lamp switch, which provides a ground signal to the ICM when the interior lamp switch is turned ON. When the ICM receives the interior lamps ON request from the vehicle security module or the interior lamp switch, the ICM energizes the circuit, which provides power to the interior lamps. The interior lamps are grounded through the circuit. The interior lamps remain illuminated until the ICM removes voltage from the circuit.
For non-RKE vehicles, the ICM energizes the circuit when a door has been opened, which provides power to the interior lamps. The interior lamps can also be turned ON or OFF with the interior lamp switch. The interior lamps are grounded through the circuit, and will remain illuminated until the ICM removes voltage from the circuit.

OBDII Code B2659 Lincoln - Courtesy Switch Fault - AutoCodes.com — B2659 Lincoln Code - Courtesy Switch Fault

What does this mean?

What are the Possible Causes of the DTC B2659 Lincoln?

Blown Courtesy Lamp Bulb
Faulty Door Ajar Switch
Faulty Interior Lamp Switch
Interior Lamp Switch harness is open or shorted
Interior Lamp Switch circuit poor electrical connection
Faulty Instrument Cluster Module (ICM)

How to Fix the DTC B2659 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 B2659 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.

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Need Help with the Code?

Get the B2659 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 B2659 Lincoln Code

1. What are the common symptoms of OBDII code B2659 Lincoln (Courtesy Switch Fault)?

The common symptoms of OBDII code B2659 Lincoln include interior lights staying on or not turning off, power door locks not functioning properly, and potential draining of the vehicle's battery.

2. What causes the OBDII code B2659 Lincoln (Courtesy Switch Fault) to trigger?

The OBDII code B2659 Lincoln is typically triggered due to a fault in the courtesy switch, which is responsible for controlling the interior lights and power door locks.

3. How can I diagnose the OBDII code B2659 Lincoln (Courtesy Switch Fault)?

Diagnosing the OBDII code B2659 Lincoln involves inspecting the courtesy switch for any physical damage, checking the wiring connections, and using a diagnostic scan tool to retrieve the specific fault code.

4. Can I repair the OBDII code B2659 Lincoln (Courtesy Switch Fault) on my own?

Depending on your level of expertise, repairing the OBDII code B2659 Lincoln may involve replacing the faulty courtesy switch, repairing damaged wiring, or resetting the error code with a diagnostic scan tool. It's recommended to consult a professional if you're unsure.

5. What are some tips for preventing the OBDII code B2659 Lincoln (Courtesy Switch Fault) from recurring?

To prevent the OBDII code B2659 Lincoln from recurring, ensure proper installation of a new courtesy switch if replacement is necessary, regularly inspect the interior lights and power door locks for any issues, and address any electrical problems promptly.

6. Are there any safety concerns associated with the OBDII code B2659 Lincoln (Courtesy Switch Fault)?

While the OBDII code B2659 Lincoln itself may not pose immediate safety risks, malfunctioning interior lights and power door locks can impact visibility while driving and compromise vehicle security. It's important to address the issue promptly.

7. How long does it typically take to repair the OBDII code B2659 Lincoln (Courtesy Switch Fault)?

The repair time for the OBDII code B2659 Lincoln can vary depending on the specific cause of the fault. Simple fixes like replacing a courtesy switch may take an hour or less, while more complex wiring issues could require more time.

8. Can the OBDII code B2659 Lincoln (Courtesy Switch Fault) affect other vehicle systems?

While the OBDII code B2659 Lincoln is primarily related to the courtesy switch and interior lights, electrical faults in this area can sometimes impact other vehicle systems that rely on the same circuitry. It's important to address the issue promptly to prevent further complications.

9. Is it safe to continue driving with the OBDII code B2659 Lincoln (Courtesy Switch Fault) present?

It's generally safe to drive with the OBDII code B2659 Lincoln present, but it's recommended to address the underlying issue as soon as possible to avoid potential inconvenience or safety concerns related to malfunctioning interior lights and power door locks.

10. Can weather conditions or vehicle age contribute to the OBDII code B2659 Lincoln (Courtesy Switch Fault)?

Weather conditions and vehicle age can sometimes contribute to the development of electrical faults, including the OBDII code B2659 Lincoln. Exposure to moisture, extreme temperatures, and general wear and tear over time can impact the reliability of components like the courtesy switch.

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