Engine-Codes - Mercury - B11BA MERCURY

B11BA MERCURY Code - Steering Wheel Audio Switch Pack

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

|B11BA MERCURY code possible causes

  • Faulty Steering Wheel Audio Switch Pack
  • Steering Wheel Audio Switch Pack harness is open or shorted
  • Steering Wheel Audio Switch Pack circuit poor electrical connection
  • Faulty Audio Control Module (ACM) or Accessory Protocol Interface Module (APIM)

|How is the B11BA MERCURY code repair?

Start by checking 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.

|B11BA MERCURY code tech notes

B11BA:1C - Steering Wheel Audio Switch Pack Circuit Voltage Out of Range
B11BA:63 - Steering Wheel Audio Switch Pack Circuit/Component Protection Time-Out

|What is the cost to diagnose the B11BA MERCURY code

Labor: 1.0

The cost to diagnose the B11BA MERCURY code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are B11BA MERCURY code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What is B11BA MERCURY code meaning?

Voltage is sent from the Audio Control Module (ACM) or Accessory Protocol Interface Module (APIM) to the steering wheel controls, and the same module grounds the return circuit. The VOL-, VOL+, SEEK- and SEEK+ switches share signal and return circuits, while the VOICE, MEDIA, PHONE and OK switches share separate signal and return circuits. For all configurations, when a switch is pressed, the voltage is routed through a specific resistor value for each function. The ACM (or APIM) then uses the reference voltage to determine which control input function has been selected. The OBDII code is set by the ACM when the reference voltage to the steering wheel controls is out-of-range. This can be caused by a number of different failures on the steering wheel controls circuit except for a stuck switch or a short to ground in the signal return circuit.

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