Courtesy Switch Fault
Table of contents
B2659 LINCOLN Possible Causes
- 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 do I fix code B2659 LINCOLN?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the B2659 LINCOLN code
The cost of diagnosing the B2659 LINCOLN code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
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.