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HOMESERVICE MANUALSFORD2021EDGE SE, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 129 (LANE KEEPING SYSTEM)DIAGNOSIS AND TESTINGLANE KEEPING SYSTEMPINPOINT TESTSPINPOINT TEST C : DTC (DIAGNOSTIC TROUBLE CODE) B12D8:11, DTC (DIAGNOSTIC TROUBLE CODE) B12D8:13NOTES
2021 Ford Edge SE, 4WD

Pinpoint Test C : DTC (Diagnostic Trouble Code) B12D8:11, DTC (Diagnostic Trouble Code) B12D8:13: Notes

2021 Ford Edge SE, 4WDSECTION Notes
WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

Refer to Vehicle Emergency Messaging System for schematic and connector information.

Normal Operation and Fault Conditions 

REFER to: Lane Keeping System - System Operation and Component Description .

DTC Fault Trigger Conditions 

DTC Description Fault Trigger Conditions
B12D8:11 Mirror Heater Output: Circuit Short To Ground An on-demand and continuous memory DTC that sets in the IPMA if an excessive current draw is detected on the IPMA camera heated windshield element output circuit.
B12D8:13 Mirror Heater Output: Circuit Open An on-demand and continuous memory DTC that sets in the IPMA if a lower than expected current draw is detected on the IPMA camera heated windshield element output circuit.

Possible Causes 

  • Wiring, terminals or connectors
  • IPMA camera heated windshield element
  • IPMA (integral to the interior rear view mirror)

Visual Inspection and Diagnostic Pre-Checks 

  • Inspect the integrity of the wiring, terminals and connectors on the jumper harness between the vehicle harness and the IPMA camera heated windshield element.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.