Engine-Codes - Mercury - B103D MERCURY

B103D MERCURY Code - Blower Driver Overtemperature

Repair Importance Level: 1/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

|B103D MERCURY code possible causes

  • Faulty Thermo-Electric Device (TED) Assembly
  • Thermo-Electric Device (TED) Assembly harness is open or shorted
  • Thermo-Electric Device (TED) Assembly circuit poor electrical connection
  • Faulty Dual Climate Controlled Seat Module (DCSM)

|How is the B103D 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.

|What is the cost to diagnose the B103D MERCURY code

Labor: 1.0

The cost to diagnose the B103D 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 B103D MERCURY code possible symptoms?

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

|What is B103D MERCURY code meaning?

Climate controlled seats are independently controlled by the Dual Climate Controlled Seat Module (DCSM) mounted to the bottom of the passenger seat cushion. The climate controlled seat system only operates with the engine running, however, if using a scan tool to command the DCSM, diagnostic testing can be carried out with the ignition ON. Both voltage supply circuits to the DCSM are spliced together internally, so if one circuit becomes open, both seats can still be operated. However, if a fault occurs setting a DTC specific to either climate controlled seat, only the affected seat will be disabled by the module and the other will remain operational.
The seat cushion is equipped with a Thermo-Electric Device (TED) Assembly that includes a seat blower (fan motor, serviced as an assembly with the TED). Similarly, the seat backrest is also equipped with its own TED assembly with blower. Cabin air is drawn through the blower and distributed to each of the TED modules located in the seat cushion and backrest. The TEDs then heat or cool the air. The air is then directed into the foam pad and manifold where it is distributed along the surface of the cushion and backrest of the seat. Once the system is activated, the DCSM uses a set of flexible algorithms to control the heating/cooling modes and the blower speed dependant on the seat switch settings.

|Need more information with the B103D MERCURY code?

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